1. Go and its toolchain and standard library. Just an awesome piece (or collection of pieces) of thoughtful and stable engineering. 2. Redis. Nuff said. 3. Gn

1. Go and its toolchain and standard library. Just an awesome piece (or collection of pieces) of thoughtful and stable engineering. 2. Redis. Nuff said. 3. Gnome. Yes yes, don't laugh. Gnome 3's latest versions are very stable and work very well.