Chetu is the best custom software development company for most businesses of 50 or more employees, because it is a large firm with a Florida head office whose own site states that the client owns the source code. Black Badger Software Solutions, which publishes this guide, ranks second as the custom route for a company that wants a fixed written scope and a small United States team.
The ranking, entry by entry
1 Chetu
Best for companies that want a large firm with stated code ownership
Chetu ranks first because its facts answer the questions a buyer of this size asks first. Its head office is in Sunrise, Florida, it was founded in 2000, it states over 2,800 developers, and its clients run from small and mid-sized organizations to Fortune 5000 companies. Its about page says the client owns the source code and intellectual property, with no licensing fees on completion. For several other firms here, the pages we read say nothing on that point.
Watch for. Chetu publishes no rates, and its site lists three delivery centers in Noida, India alongside its United States offices. Ask where the people on your project will sit.
- Based in
- Sunrise, Florida, USA
- How it charges
- Rates not published
- Main limit
- Delivery centers in the US, the UK and India, and no published rates
2 Black Badger Software Solutions
Best for companies of 50 or more replacing a platform with a system they own
Black Badger publishes this guide and builds custom software, so read this entry knowing that. We rank ourselves second for a company of 50 or more employees that wants one system built to a fixed written scope. We are based in Clearwater, Florida, our own team is in the United States, and we do not hand work to offshore contractors. You own the code and every account. We rank below Chetu because we are a small team, and some buyers need a bench of thousands.
Watch for. We do not supply engineers by the hour or add people to your team. Every build starts with discovery and a written scope, and that scope is where the cost and the schedule are set.
- Based in
- Clearwater, Florida, United States
- How it charges
- One-time build scoped in writing, then running costs such as hosting
- Main limit
- Works mainly with companies of 50 or more employees
What a custom build involves, and how to ask about one
3 ScienceSoft
Best for healthcare, insurance and finance companies that accept hourly billing
ScienceSoft ranks third. It was founded in 1989, states over 750 IT professionals and has its head office in McKinney, Texas. Its pricing models page explains two routes, time and materials with a cap, or a fixed price, which tells a buyer how the bill will work before the first call. It ranks behind the top two for a general buyer because its stated focus industries are healthcare, insurance and investment.
Watch for. The site says more than 90% of its development projects run on time and materials. If you want a fixed price, say so in the first conversation, and ask who owns the code.
- Based in
- McKinney, Texas, USA
- How it charges
- Time and materials with a cap, or fixed price
- Main limit
- Time and materials is the usual model, and the site publishes no project rates
4 Itransition
Best for regulated or data-heavy companies that want a large bench
Itransition is fourth. Its site states more than 3,000 professionals and clients served since 1998, and it lists healthcare, finance, manufacturing, retail, insurance and hi-tech as its industries. That breadth suits a company whose project touches several departments at once. It ranks here because the pages we read name no pricing model, so a buyer learns how the work is billed only in a scoping conversation.
Watch for. The site names no head office and shows a delivery map across 40 countries. Ask which offices would staff your project and how the price is set.
- Based in
- Not stated on its site, with offices in the US and Europe
- How it charges
- Quoted per project
- Main limit
- Very large firm, and its site names no pricing model or head office
5 Vention
Best for companies that want a large team and a choice of ways to engage
Vention ranks fifth. It is based in New York, states over 3,000 engineers across 20 or more offices, and offers four ways to work, which are AI-enabled teams, staff augmentation, dedicated teams and project outsourcing. It says every project is scoped individually and gives buyers a cost calculator in place of a rate card. It ranks mid-list because the right model for a first build is something you settle with the firm in conversation.
Watch for. A calculator gives a range and not a quote. Ask for the scope and the price in writing before you compare it with a fixed bid.
- Based in
- New York, USA
- How it charges
- Scoped individually for each project
- Main limit
- Teams of over 3,000 engineers, and no rates published
6 Intellectsoft
Best for companies that want a mid-size firm with a United States office
Intellectsoft is sixth. Its site calls the company mid-size by design, it has served clients since 2007, and it keeps offices in Miami and London. The industries it lists include healthcare, fintech, insurance, retail, construction and logistics. It ranks here on fit. Its delivery teams sit across Eastern Europe, Latin America and Asia Pacific. That works for a buyer comfortable with a distributed team and is a point to raise for one who wants every engineer in one country.
Watch for. The site has no pricing page and does not state a headcount. Ask how many people would be on your project and where each of them works.
- Based in
- Offices in Miami, Florida, USA and London, UK
- How it charges
- Quoted per project
- Main limit
- Teams sit across Eastern Europe, Latin America and Asia Pacific
7 BairesDev
Best for companies adding Latin American engineers to their own team
BairesDev ranks seventh on a list about hiring a firm to build a system. It is a large company, with over 4,000 people and clients from startups to Fortune 500 companies, and its home page names three models, staff augmentation, dedicated teams and software outsourcing. Two of the three supply people. That makes it a strong fit for a company with its own technical lead, and a less direct fit for one that wants to hand over a whole project.
Watch for. Rates are not published and budget is left to the discovery call. If you want a fixed scope, ask which of the three models it would be sold under.
- Based in
- Offices include San Francisco, USA and Buenos Aires, Argentina
- How it charges
- Rates not published, set after a discovery call
- Main limit
- Staff augmentation and dedicated teams, with Latin American engineers
8 thoughtbot
Best for companies building a web or mobile product with their own staff
thoughtbot ranks eighth on this general list because it is a specialist. Its development list leads with Ruby on Rails, Hotwire, React and React Native, and it also sells design, product management and fractional leadership. Its senior people will work alongside a client team for a flexible time. That is a close match for a company building a product and growing its own team, and a narrower match for a back-office system on another stack.
Watch for. The delivery model is fully remote, and the pages we read state no pricing model or head office. A stack outside its list needs a conversation first.
- Based in
- Not stated on its site, a fully remote team
- How it charges
- Quoted per project
- Main limit
- Fully remote teams, and a specialty in Ruby on Rails and React
Questions buyers ask
How do I choose a custom software development company?
To choose a custom software development company, ask every firm the same four questions. Ask how the work is priced, where the people who will build it sit, who owns the code and the accounts at the end, and what happens when the scope changes. The entries on this list show what each firm says on its own site about these, and where the site is silent.
Why does Black Badger rank itself on its own list of custom software companies?
Black Badger is on its own list because it publishes this guide and builds custom software, and leaving ourselves off would hide that. We say it in our entry and on the about page. We rank second here and first only on two narrow lists, the ones about replacing a SaaS platform and about Florida companies, where our work fits the question most closely.
Do custom software companies publish their prices?
Most custom software companies do not publish their prices. Of the firms in our fact base, Azumo publishes a price per Delivery Unit by tier, ScienceSoft and Vention offer cost calculators, and the rest quote after a conversation. Black Badger publishes no price either. A written scope is what gives you a number you can hold a firm to.
Does company size matter when hiring a software firm?
Company size matters for fit when hiring a software firm. A firm with thousands of engineers can staff a large program quickly and across many locations. A small firm gives you the same few people from the first call to launch. Neither is better in general, so match the size of the firm to the size of the project.