37signals (Basecamp)
| Founded | 1999 |
|---|---|
| Headquarters | Chicago, Illinois |
| Website | https://37signals.com |
| Employees | Fewer than 80 (source) as of 2026 |
|---|---|
| Customers served | 100,000+ (source) as of 2026 |
How Talmyn verifies these figures.
37signals is the Chicago-based company behind Basecamp, HEY, and ONCE — founded in 1999 as a web design consultancy, pivoted to product in 2004, and kept profitable and bootstrapped for over 25 years without ever raising outside venture capital. It serves more than 100,000 customers with fewer than 80 employees.