Retool is a provider of a tool development platform intended to help build custom business tools without having any programming language knowledge.

Retool's platform is designed to allow companies to build custom business tools with limited programming-language experience.

Retool was founded in 2017 by David Hsu. The company is headquartered in San Francisco, California.


Retool provides developers with tools to connect all their databases, APIs, and internal systems, and make user interface building and all other ancillary work simple. The solution is hackable and extensible, giving developers the ability to use JavaScript and customize the last mile of every app.


Retool's internal building blocks include tables, charts, forms, wizards, maps and other modules in a mix said by the company to provide a complete set of blocks out of the box.


Retool now powers over a quarter million business applications across businesses of every size, from fast-growing startups like Hopin, Descript, and Brex to global enterprises like Amazon, Pinterest, and Conagra.


Retool is backed by Sequoia Capital, Y Combinator, Elad Gil, Patrick Collison, John Collison, Nat Friedman, Jay Simons, and others. The company raised $20M in Series C rond on Dec 22, 2021. This brings Retool's total funding to $96M to date. The latest round mints Retool a unicorn with a valuation of $1.85B post-money.



  • Year founded: 2017
  • Funding Info: $96M over 4 Rounds (Latest Funding Type: Series C)
  • Yearly Revenue: NA
  • Employee Size: 51-200
  • Business Valuation: Valued at $1.85B as of Dec 22, 2021
  • City/Town: San Francisco
  • State: California
  • Country: United States
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