Collaboration & Productivity Tools
ubertesters.com
Test platform, integration and crowd testers, 2 projects, five members
testlio.com
Issue tracking, test management and beta testing platform. Free for private use
Apidog
GUI tool for API mocking, testing (scenario testing, functional testing, performance testing, etc.)
Speakeasy
API tooling for SDKs, API docs, Terraform providers, and end-to-end testing. 
Bump.sh
API documentation and change management solution
Swimm
Docs that are coupled with your code, auto-synced, works with your IDE
DeveloperHub
Collaborative developer documentation platform
talky.io
Free group video chat. Anonymous. Peer‑to‑peer. No plugins, signup, or payment required
typetalk.com
Share and discuss ideas with your team through instant messaging on the web or your mobile
seafile.com
Private or cloud storage, file sharing, sync, discussions. The cloud version has just 1 GB
cally.com
Find the perfect time and date for a meeting. Simple to use, works great for small and large groups
Raindrop.io
Private and secure bookmarking app for macOS, Windows, Android, iOS, and Web. Free Unlimited Bookmarks and Collaboration