Simple Apple/iOS-oriented app that visually shows you "when" your contacts are. Handy at-a-glance view of how available people (and I guess resources) are across timezones.
Neat site that provides an animated view of the history of a file in git (well, mostly on GitHub and similar forges). Could be handy if ever needing to demonstrate how some code evolved.
Things you're probably not using in Python 3 - but should
Handy little post that details some of the real headline changes that have taken place in "recent" generations of Python 3. I'm happy to say that I make use of a good few of these already.
Extension for Quick Look on macOS that nicely handles all sorts of source code, etc. Especially of interest because it properly renders Markdown documents.
An interesting essay on the importance of forgiveness, and how it can be about personal recovery rather than letting someone off the hook for abuse. It’s a tough lesson to learn, but ultimately useful, I’ve found.