37signals
37signals is a bootstrapped, profitable software company in Oak Park, Illinois, founded in 1999.
About
37signals is a bootstrapped, profitable software company in Oak Park, Illinois, founded in 1999. It makes the project-management tool Basecamp, the email service HEY and the kanban tracker Fizzy, serving close to a million teams worldwide. It runs its own hardware instead of public cloud, created Ruby on Rails, and is opening its products to AI agents via new APIs/CLI.
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Founders / team· 3
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This company
BusinessLatest roundTotal raisedDate- 37signals
37signals is a bootstrapped, profitable software company in Oak Park, Illinois, founded in 1999.
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United States
BusinessLatest roundTotal raisedDate- Notion
AI-powered all-in-one workplace collaboration and knowledge management software (notes/docs/project management/databases + enterprise AI Agents and se…
$327M
$327M - Swit
Cloud collaboration software (Work OS) combining team chat, task management and third-party tool integrations, with an AI collaboration assistant
$33M
$33M - Tana
AI-driven workspace that helps individuals and teams organize tasks, manage projects and capture ideas
Series A · $14M · 2025-02
$14M
Other / unspecified
BusinessLatest roundTotal raisedDate- AppFlowy
Self-hostable open-source AI workspace for enterprise teams, combining project management, knowledge base and documents
Undisclosed · $6M · 2023-12
$6M - Topview
All-in-one AI content workspace for team collaboration (text/image/voice/video)
Series A · $14M · 2026-02
$14M - Colab
Web-based collaboration tools and issue tracking platform for engineering teams
Series B · $42M · 2024-05
$42M
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