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Top Developer tools companies

IDEs, runtimes, frameworks, and platforms built primarily for engineers.

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Ranked by current headcount across the largest Developer tools companies. Refreshed daily.

  1. 1
    Amazon· Seattle, Washington, United States
    • Grant
    • 760.5k employees
    • Founded 2019
  2. 2
    Google· Mountain View, California, United States

    A problem isn't truly solved until it's solved for all. Googlers build products that help create opportunities for everyone, whether down the street or across the globe. Bring your insight, imagination and a healthy disregard for the impossible. Bring everything that makes you unique. Together, we can build for everyone.Check out our career opportunities at goo.gle/3DLEokh

    • Series unknown
    • 317.7k employees
  3. 3
    Microsoft· Redmond, Washington, United States

    Every company has a mission. What's ours? To empower every person and every organization to achieve more. We believe technology can and should be a force for good and that meaningful innovation contributes to a brighter world in the future and today. Our culture doesn’t just encourage curiosity; it embraces it. Each day we make progress together by showing up as our authentic selves. We show up with a learn-it-all mentality. We show up cheering on others, knowing their success doesn't diminish our own. We show up every day open to learning our own biases, changing our behavior, and inviting in differences. Because impact matters. Microsoft operates in 190 countries and is made up of approximately 228,000 passionate employees worldwide.

    • Post-IPO equity
    • 233.3k employees
    • Founded 1975
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  5. 4
    Fiverr· New York, Iowa, United States

    Fiverr is a global platform connecting businesses with freelance talent in the simplest way possible.

    • Series E
    • 227.1k employees
    • Founded 2010
  6. 5
    Upwork· San Francisco, California, United States

    Upwork is the world’s work marketplace that connects businesses with independent talent from across the globe. We serve everyone from one-person startups to large, Fortune 100 enterprises with a powerful, trust-driven platform that enables companies and talent to work together in new ways that unlock their potential. Our talent community on Upwork encompasses more than 10,000 skills in categories including website & app development, creative & design, customer support, finance & accounting, consulting, and operations.

    • Post-IPO debt
    • 177.7k employees
    • Founded 2015
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Find engineers and designers at top Developer tools companies

The Developer tools industry runs on the people who build it. The list above ranks the largest Developer tools companies by current headcount, drawn from public LinkedIn and Crunchbase records. Across the 47,360 Developer tools companies in Refolk’s index, you’ll find software engineers, ML researchers, designers, founders, and recruiters worth talking to - whether you’re hiring, investing, or doing market research.

Each company on the list is a hub of talent. The biggest Developer tools companies tend to attract specialised engineers, while younger ones run on small founding teams and hire generalists. Looking at headcount, last funding round, and HQ location side by side gives you a quick read on where the talent density is highest.

Refolk turns this list into a search. Ask for “Developer tools engineers in San Francisco hiring senior ML” or “designers at Developer tools companies who shipped a product in 2025” and Refolk returns a fresh ranked shortlist with the sources that earned each person a spot.

How this list is built

Refolk pulled the largest companies in Developer tools from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 25 employees. The list refreshes once a day.

Last refreshed: Wed, 05 Aug 2026 21:45:02 GMT

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How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

How fresh is the data?

The underlying index updates continuously and this page re-renders at least daily. Last refreshed: Wed, 05 Aug 2026 21:45:02 GMT.

Can I get the full list of 47,360 companies?

Yes. This page shows the top of the ranking; sign up and I'll run the search live for the complete, current list. You start with 500 free credits, no card required.

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