10 Top Software Companies in Vietnam in 2026: Services, Rates and Honest Reviews

Nguyen Manh Thang Chief Executive Officer, AgileTech Vietnam

Published: August 22, 2026
Last updated: August 31, 2026
Read time: 12 min
Views: 92

An S-curve coastline map populated by four species of buildings with a buyer figure examining it through a lens — The market is four different species of company, and a buyer needs the map, not the leaderboard.

In short

The ten top software companies in Vietnam for 2026 are AgileTech Vietnam, Kyanon Digital, PowerGate Software, KMS Technology, Saigon Technology, TMA Solutions, Savvycom, FPT Software, SotaTek and Tinhvan Software. They span two segments a buyer should understand before shortlisting: the enterprise tier (FPT, TMA, KMS) with thousands of engineers, certified process and staffing depth built for large multi-year programs, and the mid-size specialist tier (the other seven, from roughly 50 to 1,000 engineers) where most foreign buyers actually fit, with senior attention, direct communication and rates that typically run from under 25 to 49 dollars per hour. Vietnam's labor costs run as much as 90 percent below United States levels, and the market employs over half a million engineers, but rates rise 10 to 15 percent annually in hot segments, so the durable case is value and capability, not static arbitrage.

Vietnam has spent two decades turning itself into one of the Asia-Pacific region's most sought-after software outsourcing destinations, on the strength of pricing, a stable business environment and an engineering talent pool of over half a million people. This guide reviews the ten companies we consider the strongest names a foreign buyer will meet in 2026, with rates, team sizes and service focus for each, and with the honest context most lists omit: who publishes the list, which segment each firm belongs to, and how to run your own diligence afterward. AgileTech publishes this blog and opens the list, and we say so up front.

The segment context matters because most selection mistakes in this market are segment mistakes before they are vendor mistakes. A startup that engages a firm with tens of thousands of engineers gets a junior team and a distant account manager; an enterprise that hires a 40-person boutique for a five-year core banking program takes concentration risk it should not. The reviews below are grouped by segment for exactly that reason.

This page pairs with its neighbors: the Vietnam outsourcing pillar holds the full country case, the offshore Vietnam guide covers why teams locate here at all, the rate benchmark prices the geographies, and the partner evaluation guide covers the vendor-level diligence that follows once the segment is right.

Key takeaways

The ten names for 2026: AgileTech Vietnam, Kyanon Digital, PowerGate Software, KMS Technology, Saigon Technology, TMA Solutions, Savvycom, FPT Software, SotaTek and Tinhvan Software, spanning the enterprise and mid-size specialist segments.
The cost case still leads: labor costs up to 90 percent below the US, roughly half of China's and about 30 percent below India's, though rates rise 10 to 15 percent annually in hot segments.
Match the segment before comparing vendors: FPT, TMA and KMS fit large multi-year programs; the seven mid-size specialists fit the product teams most foreign buyers are actually staffing.
AI has become the delivery differentiator: the firms worth shortlisting in 2026 integrate AI into their engineering process and their client products, not just their marketing.
Every vendor list is conflicted, including this one: AgileTech publishes this blog and opens the list, which is exactly why the diligence process at the end matters more than any ranking.
Shortlist from the work backward: define the engagement's shape, pick the segment whose economics fit, then run the partner-level diligence and a paid pilot before the big contract.

Why outsource to Vietnam in 2026

Monumental towers with plain pennants above ground floors of engineers, and an observer reading a rising instrument line — When global engineering giants build here at scale, they have done your due diligence for you.

The cost case still leads every conversation, and it remains real. Labor costs in Vietnam run as much as 90 percent below United States levels, roughly half of China's and about 30 percent below India's, which means a company can staff a serious engineering team here for the price of one or two senior hires at home. The honest 2026 caveat is that the gap is narrowing at the top: rates rise 10 to 15 percent annually in hot segments like AI and senior mobile, so buyers planning multi-year commitments should underwrite the value story, capability per dollar, rather than a static arbitrage number.

Stability is the advantage buyers notice second and value longest. Vietnam offers political continuity, a safe operating environment, and a government that has spent two decades deliberately promoting the IT sector through investment in education, infrastructure and technology parks. For a buyer signing a three-year engagement, the practical meaning is simple: the ground under the contract does not move, which is not something every offshore geography can claim.

The talent pool is the advantage that compounds. Vietnamese universities graduate large technical cohorts every year, the country's young engineers increasingly train or work abroad and return with global practices, and the median engineer's English and collaboration skills have improved visibly over the decade. The result is a market that has climbed from maintenance tickets to owned products, and the reviews below include firms operating at every rung of that climb.

The strongest single piece of evidence is who else is already here. Samsung runs one of its largest R&D centers outside Korea in Hanoi, and LG, Bosch and Panasonic all operate engineering sites in the country. Multinationals audit markets harder than any procurement team before committing R&D operations, and their sustained expansion is that audit's published result. When a vendor on this list claims its engineers meet global standards, alumni of those sites on the proposed team are checkable evidence.

The 2026 numbers behind the case

Up to 90 percent lower Labor cost versus the US Roughly half of China's and about 30 percent below India's, though the gap narrows at senior levels.

Over half a million Engineering workforce Concentrated in Hanoi, Ho Chi Minh City and Da Nang, with large technical cohorts graduating yearly.

10 to 15 percent annually Rate inflation in hot segments AI and senior mobile lead; underwrite value per dollar, not a static arbitrage.

The landscape in one view

An aerial diorama of four business quarters of towers, campuses, studios and workshops around a central compass plaza — Global giants, domestic majors, product companies and mid-size specialists: one market, four species.

Vietnam's software industry divides into four segments, and the ten companies reviewed below come from the two a foreign buyer can actually hire. The first segment is the global giants' own engineering sites, Samsung's Hanoi R&D center chief among them: employers, not vendors, but the market's quality signal and its salary ceiling. The second is the product companies, VNG, MoMo, Sky Mavis and the games studios, which prove the market builds and operates its own products at scale. The third is the enterprise services tier, and the fourth is the mid-size specialist tier, and those two are where this list lives.

Three of the ten, FPT Software, TMA Solutions and KMS Technology, sit in the enterprise tier: thousands of engineers, process maturity certifications, and account structures built for large procurement. The other seven, AgileTech Vietnam, Kyanon Digital, PowerGate Software, Saigon Technology, Savvycom, SotaTek and Tinhvan Software, are mid-size specialists of roughly 50 to 1,000 engineers serving foreign clients directly, usually with a recognizable center of gravity in a vertical, a stack or a client geography.

Geography concentrates the market in three cities, and most sizable firms on this list operate in at least two of them. Hanoi holds Samsung's R&D center and a deep pool shaped by the capital's technical universities; it is home base for AgileTech, PowerGate, Savvycom, SotaTek and Tinhvan. Ho Chi Minh City is the commercial center and the largest talent pool overall, home to TMA, KMS, Kyanon and Saigon Technology. Da Nang grew as the deliberate second-site choice for firms hedging big-city salary inflation, and a partner with multi-city delivery can hire around any one city's market heat.

The four segments, defined

Global engineering sites: Multinationals' own operations in Vietnam: Samsung R&D in Hanoi, plus sites run by LG, Bosch and Panasonic. Employers, not vendors, and the market's quality signal.
Product companies: Firms whose product is their own: VNG, MoMo, Sky Mavis, the games studios. Proof of the market's product engineering depth, and competitors for its talent.
Enterprise services tier: Thousands to tens of thousands of engineers: FPT Software, TMA Solutions, KMS Technology on this list. Certified process and staffing depth for large programs.
Mid-size specialists: Firms of 50 to 1,000 engineers serving foreign clients directly: the other seven on this list. Senior attention and domain depth, where most foreign buyers fit.

The four segments behind this list: the giants and product companies define the talent market; the two services tiers are what you can actually hire, and all ten reviewed firms come from them.

The enterprise tier on this list: FPT Software, TMA Solutions and KMS Technology

A vast interlocking campus with its own power station and training hall, dispatching sealed crates toward distant skylines — The domestic majors are machines built for scale: they train, staff and ship by the thousand.

The enterprise tier trades attention for scale, and for the right engagement that trade is exactly what a buyer wants: a hundred-person modernization program, a multi-year managed service, work that needs certified process, audit trails and the balance sheet to guarantee business continuity. The three firms below can field teams in a quarter that a mid-size specialist could not assemble in a year. The mirror of that strength is that a small engagement is a small account, so buyers staffing an eight-person product team should read the next section instead.

FPT Software is the flagship of Vietnamese IT and the segment's scale benchmark: part of FPT Corporation, founded in 1999, with delivery campuses across Vietnam and offices in dozens of countries including the United States, Japan, Europe and Australia. Its global IT services revenue passed one billion dollars annually in 2023, it has served more than a thousand customers across manufacturing and automotive, banking, aviation, logistics, healthcare and energy, and its client list includes Airbus, Hitachi, Panasonic, Microsoft, DuPont and Toppan. The service portfolio runs the full enterprise range: digital platforms, smart factory, RPA, IoT, AI, cloud, embedded systems, platform modernization, testing and BPO, with entry rates that still start under 25 dollars per hour.

TMA Solutions is the tier's engineering veteran, founded in 1997 and now nearly three decades into serving clients across more than 27 countries with a team of over 3,000 engineers. Its center of gravity is deep technical work: telecom software, embedded systems, business applications, mobile solutions, cloud migration, software testing, production support and managed services, delivered end to end from concept through maintenance. The client list, Avaya, Nokia, Mitel, Chubb, AIA and GBST among them, reflects a firm that global telecom and insurance names have trusted with core systems for decades. Typical engagements start large, with entry rates under 25 dollars per hour.

KMS Technology, founded in 2009 and operating across Ho Chi Minh City and Atlanta, took the tier's third path: industry specialization. The group now runs focused units, with KMS Solutions serving banks, financial services, fintech and insurance institutions across Asia-Pacific, and KMS Healthcare delivering digital health platforms for the US market. The firm's roots in software testing and engineering productivity still show in its consulting work, and its recognition list includes the Inc. 5000 fastest-growing private companies, Vietnam's top ICT company rankings and the Sao Khue Award. Clients have included Prudential, Pharmacity, Kelley Blue Book, Ceterus and Izenda.

The enterprise tier at a glance

Company	Founded	Team size	Entry rate band	Center of gravity
FPT Software	1999	Tens of thousands	Under 25 USD per hour	Full-range enterprise programs, global delivery
TMA Solutions	1997	Over three thousand	Under 25 USD per hour	Telecom, embedded, testing, managed services
KMS Technology	2009	Around a thousand	Program-priced	BFSI via KMS Solutions, digital health via KMS Healthcare

Quick facts for the three enterprise-tier firms on this list. Rate bands are typical published entry bands; enterprise engagements are priced per program.

Illustrative comparison of an eight-person product team engagement placed at an enterprise-tier firm versus a mid-size specialist. Neither segment is wrong; the fit is.

The mid-size specialists on this list: AgileTech Vietnam, PowerGate Software and five more

A mid-size workshop with open doors where the lead greets a buyer at eye level, both holding one blueprint — At the mid-size tier the buyer talks to the people who will do the work, and that changes everything.

The mid-size tier is where most foreign buyers actually fit, and its economics explain why: a firm of a few hundred engineers lives on a portfolio of ten to forty client relationships, so your eight-person team is a meaningful account, senior people stay involved after the sale, and communication runs direct to the working team rather than through account management. Rates typically run from under 25 to 49 dollars per hour, below enterprise pricing, while the seniority actually deployed on a mid-size engagement is often higher. The seven firms below are the tier's strongest names, and the first is the one writing this review, disclosed accordingly.

AgileTech Vietnam was founded in 2015 in Hanoi and has grown to a team of over 200 engineers with more than 300 completed projects across fintech, edtech, e-commerce and hospitality. The firm's 2026 distinction is that it was an early adopter of AI-driven software delivery, integrating AI into both its engineering process and its client solutions, which shows up as faster time-to-market and more intelligent products rather than as a slide in a deck. The service focus spans web and mobile products, digital transformation, AI and big data services, blockchain and testing, with entry rates under 25 dollars per hour. The engagement model is deliberately built for startups and SMEs, rapid iteration and cost efficiency, while holding enterprise-grade standards in security and architecture for larger programs. Learn More About AgileTech.

PowerGate Software, founded in 2011 in Hanoi, is a global full-cycle partner that takes products from consulting and design through development and long-term operation, with more than 200 delivered projects across healthcare, fintech, education and beyond. Its distinguishing structure is market presence: offices in Australia, the US, Canada and the UK put the firm close to its clients' markets, and its double ISO 9001 and ISO 27001 certification backs the security and process claims that matter in regulated work. The portfolio spans custom software, web and mobile applications, AI, blockchain, cloud platforms and ERP systems, delivered with a product mindset rather than a ticket queue, at entry rates under 25 dollars per hour. Clients have included Ally, Bitwage, RMIT University, GenX-Tech and Fitek.

Kyanon Digital, founded in 2012 in Ho Chi Minh City with over 300 people and offices in Vietnam and Singapore, is the tier's digital transformation consultancy: alongside software engineering it delivers data, AI and machine learning work, low-code platforms, e-commerce and D2C builds, and loyalty and rewards systems, organized as consulting, innovation, operations and venture practices. Its client list is the tier's most consumer-brand-heavy, Samsung, Starbucks, Central Retail, Roche, ACB Bank, Sharp Vietnam, Servier and NutriAsia among them, and its rates run 25 to 49 dollars per hour, reflecting the consulting layer on top of delivery.

Saigon Technology, founded in 2012 in Ho Chi Minh City, is an award-winning delivery specialist whose pitch is quality at an affordable price, backed by a portfolio running from simple builds to complex multi-platform products for large companies including Kaercher, Standard Chartered, Abbott, DMI and Big C. It customizes its development process per client and adds consulting from its senior engineers, with a focus spanning offshore and custom development, product engineering, web applications and cloud migration, at entry rates under 25 dollars per hour. Savvycom, founded in Hanoi and now with offices in Ho Chi Minh City, Australia and the US, specializes in digital transformation for healthcare, finance and retail, with clients including Vingroup, Nielsen Norman Group and Med-on, at 25 to 49 dollars per hour.

SotaTek, founded in 2015 as part of Sota Holdings with ten offices across Vietnam, the US, Japan and Australia, is the tier's blockchain and emerging-tech specialist: full-cycle delivery across blockchain, AI and machine learning, cloud, ERP and CRM, with clients including the Klaytn Foundation, XinFin, PolkaFoundry and Algorand, at 25 to 49 dollars per hour. Tinhvan Software, founded in 2006 in Hanoi and formerly known as the Netlab Network Experiment Center, is the tier's process-certified veteran, holding ISO 9001, ISO 27001 and CMMi Level 3, focused on consulting, product delivery and testing services for clients including Unilever, Hyundai Thanh Cong, BIDV, AEON, Sony and ELSA, at entry rates under 25 dollars per hour and with the tier's most accessible minimum engagement sizes.

The mid-size specialists at a glance

Company	Founded	Team size	Rate band	Focus
AgileTech Vietnam	2015	Over two hundred	Under 25 USD per hour	Web and mobile products, AI, big data, blockchain, testing
Kyanon Digital	2012	Over three hundred	25 to 49 USD per hour	Digital transformation, data and AI, low-code, e-commerce, loyalty
PowerGate Software	2011	Several hundred	Under 25 USD per hour	Full-cycle products, AI, blockchain, cloud, ERP
Saigon Technology	2012	Several hundred	Under 25 USD per hour	Custom and offshore delivery, web apps, cloud migration
Savvycom	2014	Several hundred	25 to 49 USD per hour	Healthcare, finance and retail transformation
SotaTek	2015	Several hundred	25 to 49 USD per hour	Blockchain, AI, cloud, ERP and CRM
Tinhvan Software	2006	Fifty to two hundred fifty	Under 25 USD per hour	Consulting, product delivery, testing, certified process

Quick facts for the seven mid-size specialists on this list. Rate bands are typical published entry bands as of 2026; every firm prices per engagement.

What changed by 2026: AI-native delivery and the product layer

A studio building launching an app-panel rocket from its roof at night while figures watch from nearby rooftops — A market that ships its own global products has engineering depth no outsourcing brochure can fake.

The biggest shift since the last generation of Vietnam vendor lists is that AI moved from the services menu into the delivery process itself. The firms worth shortlisting in 2026 use AI-assisted engineering internally, code generation under review discipline, automated test synthesis, AI-augmented estimation, and can show the productivity delta rather than assert it. On this list, AgileTech built its recent growth on exactly that adoption curve, and nearly every firm reviewed now carries AI or machine learning as a first-class practice rather than a label. The buyer's test is simple: ask how AI changed the vendor's own process last year, and listen for specifics.

The second shift is the product layer's depth, which matters even to buyers who never engage it commercially. VNG operates Zalo, Vietnam's dominant chat platform, at a hundred-million-user scale; MoMo runs one of Southeast Asia's largest payment platforms; Sky Mavis built Axie Infinity from Ho Chi Minh City; and the games industry ships global hits from studios in both major cities. What that proves is precisely what ticket-outsourcing stereotypes deny: the market designs, builds and operates its own products, with the reliability practice and iteration speed that implies, and services firms hire from the same talent pool. The MoMo platform anatomy elsewhere on this blog exists because that engineering is worth studying on its own terms.

For a buyer weighing a five-year commitment, the two shifts point the same direction. Markets that develop product layers keep climbing the value curve: rates rise, but so does the ceiling of what can be bought, and senior product engineers will be more available in Vietnam in five years, not less. A long-run team here is a bet on that trajectory, which is the opposite of betting on a static labor-cost arbitrage, and it is the frame in which the 10 to 15 percent annual rate inflation reads as a feature of a maturing market rather than a defect.

Why the published top-ten lists mislead

A coin-operated podium mechanism lifting trophies to ranked steps while an observer lifts the curtain revealing it — When placement is purchased, a top-ten list measures marketing budgets, not engineering.

A list like the one above deserves its own disclosure section, because most of the genre actively distorts buying decisions. The mechanics are simple: most ranking directories monetize through vendor subscriptions, sponsored placements and lead fees, and most listicles on agency blogs rank the publishing agency first. This page is no exception to the structure, AgileTech publishes it and opens the list, and it names firms we know professionally, which is exactly why the reviews above carry segment context, rate bands and verifiable facts rather than scores, and why the diligence process in the next section matters more than any ranking, including ours.

Review platforms are the more defensible version of the genre and still need reading skill. Verified-review sites carry real client interviews, and the interviews contain genuine signal, but the aggregate scores compress everything to a number where nearly every vendor holds 4.8 stars, review volume tracks how systematically a firm harvests reviews, and unhappy clients rarely write reviews at all. The useful method is to ignore scores, read the negative and middling reviews first, and mine the review text for the specifics that match your engagement: team size, domain, engagement length, what went wrong.

The deeper problem with any list is that top has no denominator. Top for whom, at what size, in which domain, under which model? FPT is genuinely a top company for a global enterprise program and genuinely the wrong choice for a seed-stage startup's first team, and both facts fit in one sentence. Any list that ranks a thirty-thousand-person firm against a two-hundred-person fintech specialist on one axis is compressing away the only information that matters, which is why this one groups by segment instead of ranking.

What makes a list usable is treating it as a phone book: a discovery source for names you then evaluate independently. The ten firms above are real, established and referenceable, and every claim in their reviews is checkable, founding years, certifications, client names, office locations. Check them anyway. Two weeks of the process in the next section outperforms any ranking ever published, this one included.

Using vendor lists without being used

Do this

Treat lists as a phone bookA discovery source for names you then evaluate independently, this list included.
Read negative reviews firstThe middling and unhappy reviews carry the signal; the five-star wall is harvested.
Mine reviews for your shapeTeam size, domain, duration, what went wrong. A great review of a forty-person program says little about your six-person team.
Verify off-platformReferenceable clients you can call, alumni you can check, code or case detail an engineer can interrogate.

Not this

Shortlist by rank positionRank on pay-to-play directories measures marketing spend. You are reading an ad and calling it research.
Trust aggregate scoresWhen every vendor scores 4.8, the metric carries no information by construction.
Compare across segments on priceAn enterprise firm's rate buys different machinery than a specialist's. The comparison needs the segment context.
Skip the diligence for a brandBig names fail small engagements structurally, not accidentally. Size fit beats brand comfort.

Illustrative decomposition of what drives position on a typical pay-to-play vendor ranking. Delivery quality enters only through harvested review volume.

Building a real shortlist: the process

Start from the work, not the list. Write one paragraph: what is being built, how many people it needs, for how long, in what domain, under which engagement model, team extension, project delivery, or staff augmentation, and which client geography's working hours it must meet. That paragraph makes the segment choice nearly automatic, three of the ten firms above fit large programs, seven fit product teams, and it becomes the brief candidates respond to, which itself is a filter: vendors who answer the brief specifically are telling you how they will communicate for the next two years.

Source candidates from channels where incentives are aligned. Peer recommendations from companies with engagements shaped like yours are the strongest channel. Referenceable case studies, where the client is named and callable, are next. Alumni networks, engineers or founders who have worked with or inside Vietnamese firms, carry dense, honest signal. Review text mined for engagements like yours, as the previous section described, is usable. Lists, including this one, contribute names only, never ordering.

Run the evaluation as an engineering exercise, not procurement theater. A structured call where your engineers interview theirs, on a real problem from your domain, tells you more than any deck: listen for specific past examples versus generalities, for questions they ask you, and for disagreement, the design-review pushback test from the offshore guide. Follow with references you choose from their client list rather than the two they offer, and ask every reference the same three questions: what went wrong, how was it handled, would you start again with them tomorrow.

Then pilot before you commit, if the engagement size justifies it. A four-to-eight-week paid pilot on a real, bounded piece of work, with the actual proposed team, converts every claim into observable behavior: communication rhythm, code quality under your review bar, how estimates track reality, how the first disagreement lands. Pilots cost a fraction of a mis-signed annual contract, and good vendors welcome them, because the same pilot is how they evaluate you as a client, and the ones who resist a paid pilot on principle are answering a question you should notice.

From this list to a signed pilot in five moves

Write the work paragraphHalf a day

Scope, size, duration, domain, model, working hours. The segment choice falls out of it, and it becomes the brief.
Source from aligned channelsA week

Peers with similar engagements, callable references, alumni networks, mined review text. Lists contribute names only.
Interview engineer to engineerOne call each

A real domain problem, your engineers versus theirs. Listen for specifics, questions back, and honest disagreement.
Call references you chooseThree calls

From their client list, not their shortlist. What went wrong, how was it handled, would you start again.
Pilot the actual teamBefore the big contract

Four to eight weeks, paid, real bounded work, the named people. Claims become observable behavior.

The buyer's first decision as a tree. Match the engagement's shape to a segment's economics before comparing any two firms on this list.

Frequently asked questions

What are the top software companies in Vietnam in 2026?

The ten strongest names for a foreign buyer are AgileTech Vietnam, Kyanon Digital, PowerGate Software, KMS Technology, Saigon Technology, TMA Solutions, Savvycom, FPT Software, SotaTek and Tinhvan Software. FPT, TMA and KMS form the enterprise tier for large programs; the other seven are mid-size specialists of roughly 50 to 1,000 engineers where most foreign product teams fit. Among product companies, VNG (Zalo), MoMo and Sky Mavis anchor the market's depth, and Samsung's Hanoi R&D center is the largest multinational engineering site.

How much do Vietnamese software companies charge in 2026?

Typical published entry bands on this list run from under 25 dollars per hour (AgileTech, PowerGate, Saigon Technology, Tinhvan, and the enterprise firms' entry bands) to 25 to 49 dollars per hour (Kyanon Digital, Savvycom, SotaTek). Vietnam's labor costs run as much as 90 percent below US levels, roughly half of China's and about 30 percent below India's, but rates rise 10 to 15 percent annually in hot segments like AI and senior mobile, so multi-year buyers should underwrite value per dollar rather than a static rate.

What kind of Vietnamese firm fits a foreign product company?

Usually a mid-size specialist: 50 to 1,000 engineers, serving foreign clients directly, with a recognizable domain or stack center of gravity, the segment where AgileTech, PowerGate, Kyanon, Saigon Technology, Savvycom, SotaTek and Tinhvan sit. At that scale your team is a meaningful account, senior people stay involved after the sale, and communication is direct rather than account-managed. The enterprise tier fits large multi-year programs; placing a small product team there buys process designed for something else.

What does Samsung's R&D presence in Vietnam signal?

Talent validation at the highest standard of evidence. Multinationals audit engineering markets harder than any procurement process before committing R&D sites, and Samsung's Hanoi center, among its largest outside Korea, plus sites from LG, Bosch and Panasonic, is that audit's published result. The sites also train engineers to global practices and push the whole market's salary curve upward, both of which buyers feel downstream.

How should a buyer actually use a top-ten list like this one?

As a phone book, not an evaluation, and that includes this list, which AgileTech publishes and opens. Most ranking directories monetize through vendor subscriptions and sponsored placements, so rank measures marketing spend. Use lists to discover names, then work backward from your engagement: write one paragraph covering size, duration, domain and model, pick the segment whose economics fit, evaluate engineer to engineer on a real domain problem, call references you choose, and run a paid pilot with the named team before the big contract.

Do Vietnamese firms build products, or just execute specifications?

The product segment answers this directly: VNG operates Zalo at a hundred-million-user scale, MoMo runs one of Southeast Asia's largest payment platforms, Sky Mavis built a globally significant blockchain game, and the games industry ships worldwide hits. Services firms hire from the same talent pool, and by 2026 the strongest vendors also run AI-assisted delivery internally. The practical test for any firm on this list is whether the proposed team includes engineers with product-company or global-site backgrounds, which is checkable.