A multi-account Matrix client that allows you to authorize webapps to access parts of your account, designed with collaboration in mind.
Seems to work a lot like Keybase, only without some of the more useful features. Haven't dug into it, really, so not a lot of info just yet.
A service that lets you look up the bitting codes for just about every lock manufacturer. Gives you the engineering diagrams and precise measurements for bitting to millimeters. Offers mobile apps where you can photograph keys and it'll decode them for you.
Basic subscription costs $10us a month.
They sell key blanks without asking questions.
A utility that makes it easy to back up your OpenPGP keys on dead trees by extracting the secret bytes and printing them out.
A dealer of antique and vintage locks and keys of all kinds.
A free utility for Windows that extracts your wireless keys in case you forget them.
A public keyserver for GnuPG and PGP public keys. Submit your key so people can look it up, or search it for keys that you might not have.
A webapp that helps you generate api keys for mastodon.