[x]it! is a plain-text file format for todos and check lists with emacs major mode mode
Numpad is a text editor/calculator hybrid.
From the HN comments, there is also calcpad ("A different take on the caculator"), an electron app where an online version is available too. Both nifty.
SSH Tips and Tricks, about Yubikey SSH forwarding, auto start tmux on connect and more (HN thread)
ansi-art — allows you to render a regular image as a 24-bit, Unicode-capable version of ANSI Art
ergodox; a next-generation ergonomic keyboard
standardebooks.org — Free and liberated ebooks, carefully produced for the true book lover.
