In the wake of the Ledger event, it has become interesting whether users and bitcoiners are thinking about what software and devices they use? It can be difficult to completely switch to FOSS because of the convenience and habit of using proprietary solutions.
I try to use as much free and open-source software -- or software that doesn't require payment, doesn't track usage, or a combination of both -- as much as possible.
The transition from proprietary software is easier when done over a period of time.
If you're not familiar with Richard Stallman, founder of the Free Software Foundation, his talks are a good introduction. While he is one of the most well-known free software advocates, he's not alone. There are many people in the space who can provide useful information to shed yourself of proprietary garbage.
For the novice, here are a few things you can start doing today:
Discord => IRC, xmpp, matrix, mumble
Skype,Teams => Jitsi
Visual Code Studio => Emacs, vim
iTunes, Spotify => Strawberry, foobar2000
Windows, MacOS => Linux, *bsd
There are a number of sites that offer free, privacy-respecting recommendations for software and services:
  1. Suckless' list of software that rocks and sucks.
  2. cat-v's list of harmful stuff
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Great and detailed answer! I think it will be useful for many people. I would also add this link to Awesome Privacy
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