Talebook - Understand your client and kick-off your new project!
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
UXsniff - Track user behavior on your website and improve conversions with UXsniff: the user experience watchdog that looks out for you.
whatdevsneed - This is whatdevsneed.
UserBit - A full-stack qualitative research platform for UX & product teams.
SmallDevTools - Handy developer tools with a delightful interface