The Noise protocols offer a “cryptographic core” which can be fleshed out into protocols for encrypted email, interactive connections, etc.
Introduction to Arithmetic Groups, by Dave Witte Morris.
Half a coin is stranger than none, by John Baez.
Licensing in a Post Copyright World, by Armin Ronacher.
rrsync restricts rsync to subdirectory declared in .ssh/authorized_keys.
This is the bestest briefing on intersectionality ever
20 Amazing True Facts About Introverts and Extroverts