Pdftk

Blender has to be the best at being a swiss army tool, the other software require using other software for what they are missing while blender can do it all, its objectively better at being the singular tool for the job if you want to not leave one software

Keepass. ill skip the obvious and just mention the really neat features that other server/cloud based password managers dont or cant have.

• on desktop, you dont need any browser extension to fill in passwords since the "autotype" feature in keepassXC handles that. this means your browser has no to access your database at all. any password manager thats connected to your browser in any way is a huge security risk imo.
  (i would recommend this extension that changes the window title though)

• you can have 2 databases open at the same time (in keepassXC and keepassDX at least), which means you can have important logins in one and everything else in the other one. if you ever get annoyed having to unlock your vault using a really long master password just so you can autofill some crappy forum password then you might get why 2 databases is a good idea!

• you can fill in login details for desktop programs. (maybe others do this now but they didnt when i switched to keepass years ago)

Aegis authenticator. its been years since ive used google's authenticator app so maybe its improved now, but it used to be very spartan. it showed you your OTP codes and thats about it.

Aegis lets you add an icon to each entry and the different sized text makes things a lot easier to read. the visual timer is much clearer as well and the text turns red when its close to running out.

you can also backup your codes so if you lose your phone its no big deal. you can unlock the app with your fingerprint. you can tap on a code and then have it add that to the clipboard and then go back to the previous app

emacs

REALLY simple, but "Open Sodoku". It's just a Sodoku app without ads. I'm very bad but it's pretty fun

Any FOSS Linux/Unix shell, bash, zsh, fish, tcsh, whatever, is a million times better than cmd or the early versions of PowerShell. Yeah, I know, PowerShell Core exists now, and it's even open source and cross platform, but it still sucks.

Markor: one of the few Android text editors/notepads that saves text to text files (crazy idea, right?) and works rally well with Syncthing.

Conversations.im for Android is an incredibly well made XMPP/Jabber messenger, and their message polling and real-time message delivery is unmatched AFAIK.

ratbag (and the frontend, piper) is a tool for remapping buttons on mice with a sensible interface. Beats installing proprietary Logitech software.

I agree with most of the programs that others have posted. I'll just mention two that I absolutely love but no one has mentioned yet, rsync and mpv.

https://www.visidata.org/

Way, way better than excel for working with tabular data. Excel is child's play in comparison.

Im not sure i can say its objectively better, but i like godot much more than unity

Lichess -> chess.com

But it's hard to be impartial / objective about modern stuff like that.

I'm surprised I haven't seen blender here yet, but I really think blender is one of open source's greatest achievements. It feels like a professional software and is also used in the industry.

all fossify apps in android. I find most android apps for basic tasks heavily overbloated, even the ones directly from google.

Okular for pdf viewing on pc

Actually, there's lots of FOSS software which is at least just as good as proprietary. Most FOSS lacks the support of proprietary though. And I don't mean the "call someone on the other end of the world" support, I mean manuals, tutorials and stuff like that. /Off topic

On topic: Apache, Git, Home Assistant and Jellyfin.

I certainly like GIMP and Inkscape better than Photoshop and Illustrator, though any professional photo editor or graphic artist would probably fight me on that lol

But Krita is the best drawing/painting program of all time and I stand by that.

Almost any Foss image editor, PDF viewer or simple app that does one thing without ads or bullshit. Markor, Wireguard, etc. They have nothing else to do but function.

Syncthing!

I don't even know what to compare it to, I have been using it so long.

These comments are like a treasure trove.

I didn't see anyone mention Kodi as an alternative to smart TVs. It's better in every way than the Apple TV I won from a raffle at work. The best part is that my TV box is just a computer so I can use it to host other services too

Heliboard