productboard - Beautiful and powerful product management.
Magnet Window Manager - Magnet Developers
FastNetMon - FastNetMon is a very fast DDoS analyzer with sflow/netflow/mirror support.
Stay for OS X - Keep windows in their place
ProdPad - ProdPad helps your team gather ideas, surface the best ones and turn them into product specs, and then put it all on a product roadmap.
uBar - The Dock replacement for the Mac.