Spec-ulation Keynote (YouTube), by Rich Hickey. Very good insights.
zkSNARKs in a nutshell, by Christian Reitwiessner. “SNARKs are short for succinct non-interactive arguments of knowledge.”
Torsors Made Easy, by John Baez (2009).
s6-tlsc is a program that establishes a TLS or SSL client connection over an existing TCP connection, then spawns an application. All the crypto used in s6-tlsc is provided by the chosen SSL backend: BearSSL or LibreSSL, depending on the options given when configuring s6-networking.
ln.exe, a tool for NTFS hardlinks on Windows, also can do incremental backups with hardlink farms.
earlyoom checks the amount of available memory and free swap 10 times a second. If both are below 10%, it will kill the largest process. This hack works a lot better than Linux built-in OOM…