Basecamp is a web-based project-management tool developed by 37signals.
The font used for the Basecamp logo is probably Whitney, a type family originally developed for New York’s Whitney Museum. You can view more details about the typeface on Typography.com.
Update: Basecamp quietly updated their logo in August 2019. The new logo is a simplified icon paired with the wordmark in an updated sans serif, which is probably Graphik Semi Bold from Commercial Type.
Basecamp Logo (2019 – Present)
Set in Graphik Semi Bold
Download Basecamp Font
We are currently unable to find a free alternative or a font similar to the commercial font identified above, and you will need to follow the relevant links above and purchase a font license.