There's no single best offshore software development company, because offshore is a distance, not a service. For a US company it covers a nearly 600,000-person IT services firm in Mumbai, a 1,100-person product engineering company with its delivery hub in Ho Chi Minh City and a 70-person product studio in Porto. Those companies answer different questions, and the region you pick narrows the answer more than any ranking does.

So this list starts with the three regions a US buyer actually means by offshore, then names ten companies worth knowing across them, each with its location, what it's best at and what to watch for.

How this list was put together

Three rules, applied to every company below. First, the numbers are for reference, not a ranking: the companies are grouped by region, and the right one for you depends on your stack, your budget and how much of your day you need to share, none of which a list can know. Second, every number comes from the company's own site, its investor reporting or published industry data, linked in place. Third, each entry names its region up front, because the region fixes your working hours and your rate band before any company gets a say.

Latin America isn't here. For a US buyer it's nearshore, and we've covered it, with Europe as the alternative, in our list of the best nearshore software development companies.

What is an offshore software development company?

An offshore software development company builds software for you from a country on another continent, several time zones away. For a US buyer that conventionally means Asia or Europe. The company employs the engineers, and depending on the contract you buy their hours, a dedicated team, a delivered project or a team you can later take in-house.

The definition is geographic, and that's its limit. It tells you how far away the people sit and how much of your day they share. It says nothing about what you're buying, which is the comparison we took apart in offshore vs onshore software development.

How do the offshore regions compare?

The rate bands are Accelerance's figures for partner billing rates, published for 2026 planning, and they don't split Asia by country. Treat them as an order of magnitude. The time difference is the column that won't move.

Europe is the most expensive offshore region and the one with the most working time in common with the US. A team in Porto starts its day five hours ahead of New York, which leaves a shared afternoon on their side and a shared morning on yours. European partners also work under EU law on employment, IP and data. The rate gap with Latin America is now a few dollars an hour, so choose Europe for the people and the overlap, not for the price.

India is the offshore market at its largest, and it's changing what it sells. Alongside outsourced delivery, the big firms now build and run teams that clients own outright. The Zinnov–nasscom India GCC Landscape 2026 counts 2,117 Global Capability Centers employing 2.36 million people. India suits large programs and long-term presence, and suits less well work that needs daily conversation with a US team.

Vietnam is the fastest-growing alternative to India, with nearly 1.26 million ICT workers at the end of 2024 and $11.5 billion in overseas revenue, according to Ministry of Information and Communications figures. Smaller firms there tend to work as an extension of your engineering team. The catch is the clock: at 11 hours ahead of US Eastern in summer, there's barely any shared working day.

The 10 best offshore software development companies

Ten offshore software development companies worth knowing in 2026, grouped by region and numbered for reference: three in Europe, four in India and three in Vietnam. Each entry says where the company is based and delivers from, who it suits and the question to ask before signing.

1. Pixelmatters

What it is: An AI-native digital product studio founded in 2014, with a standing team of 70+ people in Porto, Portugal. We work as an extension of an existing team or as a dedicated cross-functional squad across product, design and engineering, and we rebuild how a client's own teams work around AI, a transition our CEO Bruno Teixeira describes running on ourselves first. For companies that want to own their team eventually, we also run Build-Operate-Transfer engagements, where the operate and transfer phases are optional.

Best fit: US and UK companies building core product that want a partner to hold product context in a European time zone, with the option of owning the team later.

Watch for: A team that wants one or two engineers working only to its direction will find a larger firm or a capacity partner cheaper.

2. EPAM Systems

What it is: A digital engineering company founded in 1993 and headquartered in Newtown, Pennsylvania, with about 62,850 people and 2025 revenue of $5.46 billion. Its largest delivery locations are India, Ukraine, Poland, Belarus and Mexico, so a European engagement may still draw on Asian delivery.

Best fit: Large digital engineering programs that want a US-listed partner with deep Central and Eastern European delivery.

Watch for: Ask which country your team sits in. Delivery spans several continents, and the time zone you get depends on the answer.

3. Endava

What it is: A European technology services company listed in New York, with 11,225 people and FY2025 revenue of £772.3 million, strongest in payments, insurance and banking. Equiniti and NatWest are recent named partners.

Best fit: Financial services and payments companies that want a partner already fluent in regulated environments.

Watch for: Delivery spans 25 countries, so confirm where the engineers on your team actually sit and how stable that team has been on similar accounts.

4. Tata Consultancy Services (TCS)

What it is: India's largest IT services company, founded in 1968 as a division of Tata Sons and headquartered in Mumbai. It reported FY26 revenue of $30.0 billion and 584,519 employees, with 194 delivery centers in 56 countries. In October 2026 it agreed to take over Best Buy's India capability center.

Best fit: Enterprise programs that need hundreds of people across many skill sets under one contract.

Watch for: At this size you're a small account unless you're a large one. Ask who runs your work day to day and how many other accounts they cover.

5. Infosys

What it is: An Indian IT services company founded in 1981 by seven engineers, operating in 59 countries, with FY26 revenue of $20.2 billion and 328,594 employees. It sets up and runs Global Capability Centers for clients, naming Citizens and Lufthansa Group among them.

Best fit: Large companies that want a partner to build an India capability center and run it until they're ready to take it on.

Watch for: The capability-center route only pays off if you'll actually run the team one day. If you won't, you're paying for setup you never use.

6. Persistent Systems

What it is: A digital engineering company based in Pune, India, operating since 1990, with 27,502 employees, nearly 24,000 of them in India. North America brought in 80.6% of its FY26 revenue of $1.65 billion, up 17.4% on the year.

Best fit: Software companies that need product engineering and platform work from a partner whose business is built around US clients.

Watch for: Mid-size by Indian standards still means a large organization. Meet the engineers who'll be assigned, not only the account team.

7. ANSR

What it is: A Dallas-headquartered company, founded in 2015, that builds capability centers for other companies in India, Eastern Europe and Southeast Asia rather than delivering software itself. It offers Global Capability Centers, Build-Operate-Transfer and managed teams, reports 225+ centers set up, and names Target, Lowe's India and National Australia Bank among its clients. Accenture invested in the company in 2024.

Best fit: Companies that have already decided to own a team in India and want help with entity setup, hiring and operations.

Watch for: You're building your own engineering organization, so the product and delivery leadership has to come from you.

8. FPT Software

What it is: The IT services arm of FPT Corporation, founded in 1999 and headquartered in Hanoi, Vietnam, with 30 development centers across 30 countries and territories and 1,100+ customers. It sells onsite, nearshore and offshore delivery, and its parent group reported signed IT services revenue above $1.5 billion in 2025.

Best fit: Large, well-specified engineering and modernization programs at Asian rates, from one partner with delivery in several countries.

Watch for: It's Vietnam's largest player, so you're competing for attention with very large accounts. Ask which delivery center your team comes from.

9. KMS Technology

What it is: A US product engineering company founded in 2009, with offices in Atlanta, delivery hubs in Ho Chi Minh City and Da Nang, Vietnam, and 1,100+ people. It sells embedded squads on monthly pricing, and added a Polish AI and data firm, Addepto, in 2025.

Best fit: US software companies that want a dedicated Vietnamese engineering team managed from a US-based company.

Watch for: The overlap problem doesn't go away because the contract is signed in Atlanta. Ask how the squad handles decisions that need your team the same day.

10. NashTech

What it is: A UK-headquartered technology services company that launched in Vietnam in 2000 and now runs five global delivery centers, with offices in Hanoi, Ho Chi Minh City and Da Nang. It reports 85%+ employee retention and an average client relationship of 5+ years.

Best fit: Companies that want offshore delivery in Vietnam with management and contracts on the UK side.

Watch for: Its US presence is light, with one office in Illinois. Check that US hours are covered by someone with the authority to decide.

How much does offshore software development cost?

Offshore software development costs between roughly $31 and $76 an hour for a senior developer, depending on region, and the rate is the least reliable part of the bill. Accelerance's 2026 planning data puts senior Asian rates at $31–41 and European rates at $64–76, and rates fell in every region over the year, by between 4.4% and nearly 8%.

The trouble with comparing hourly rates is that published figures mix different things: employer labor cost, developer salary, freelance rates and partner billing rates. Our breakdown of nearshore software development rates in Europe shows the same country appearing at three times the price depending on which one a table uses.

The number to ask every shortlisted company for is the total monthly cost of a defined team, with a written list of what sits inside it: management, planning, design, holidays, equipment and replacement when someone leaves. Then add what never appears on the invoice. Onboarding a replacement is paid by your engineers, and every question that waits overnight costs you a day.

Rent the team, or build one you'll own?

This is the decision the regions don't make for you, and it's the one that lasts. In Deloitte's Global Outsourcing Survey, 70% of executives said they'd brought work back in-house from a third party in the previous five years. Companies rent capability, then buy it.

The offshore market has followed. TCS, Infosys and ANSR all build capability centers that clients own, and India's 2,117 centers are the result. In Europe, the same idea usually runs as Build-Operate-Transfer: a partner builds and runs the team, and you decide later whether to take it on. Inside the EU, Directive 2001/23/EC means employees keep their terms when a business transfers, so the handover rests on law rather than on a clause you have to negotiate.

Three questions settle which route fits:

• How long is the work? Under a year, ownership is irrelevant and renting capacity is right.

• Is it core product? Work that carries your differentiation rewards continuity, which points to a dedicated team or a team you'll own.

• Would you ever employ people in that country? If not, an ownership route is paying for an option you won't use.

How do you check an offshore company before you sign?

Directories are a reputation signal, not a fit signal. Clutch's methodology scores providers on reviews, clients and market presence, and sponsorship changes where a company appears by default. Six questions tell you more:

1. Which country will the team sit in? Several companies above deliver from three continents. The answer sets your working hours.

2. Who legally employs each person? Ask for the entity name and country, per named engineer. Subcontracting shows up here.

3. Do these people work there today? Ask to meet two of them. "Available from" dates mean a hiring process, not a team.

4. What was last year's turnover, and who pays for the handover? If you do, turnover is a standing discount on what you bought.

5. When does the code become yours? On creation, not on final payment, covering repositories, infrastructure, design files and prompts.

6. What does the last day look like? Ask how they've ended engagements before. Companies that have only ever renewed will struggle to answer.

What the time zone decides, and what it doesn't

The time zone sets how your week runs. With India or Vietnam, work goes out at the end of your day and comes back at the start of the next, so specs have to be complete and decisions made in advance. With Europe, you share part of every day, and the work can change shape while it's in progress. Neither is better. They suit different kinds of work.

What the time zone doesn't decide is whether the team gets better at your product over time. That comes from who employs the people, how long they stay and whether you can keep them. Pick the region that matches how your team works, then choose the company on those three things. Which is also the best reason to read any list like this one as a starting point.