Linux

GNU Stow, definitely. I can't stress enough how wonderful this app has been for my sanity. I use it to manage my dotfiles and personal data.

I made one dotfiles folder, which contains home, etc and usr subfolders. I put all my configs in it (dotfiles, themes, custom keyboard layouts, etc) in the relevant subfolders, then with Stow I symlink dotfiles/home to /home/username, dotfiles/etc to /etc and dotfiles/usr to /usr, and poof symlinks are created for everything in it. That way all my configs are in one folder, I can sync it to my NAS easily, make it a git repo for version control, and even upload it to github. It's amazing 🥰 I also made a personal folder which contains Documents, Pictures, Videos, etc, all symlinked to /home/username/Documents and such, so I only have one folder to back up for my personal data. Yes I'm very lazy and hate doing backups 😅

Rofi (or here for the X11 version) : It's the best app launcher by miles, even if I used a DE I'd still use rofi. But I also use it for a lot of other stuff that it's much less well known for: the run mode for launching scripts and other executables, the ssh mode for ssh, rofi-calc for a very light and fast calculator that understand natural language, rofi-games as a games launcher, rofi-emoji as emoji selector... Rofi is life, rofi is love, rofi is God.

Libation to liberate audiobooks from Audible. There's tons of apps to download and un-DRM your files from various platforms, but most only work on Windows. This one does work on linux 🥳

Lots of self-hosted apps for my media server, but they are all pretty well known (Jellyfin, Audiobookshelf, Komga) except maybe Suwayomi Server for manga (it can sync progress to AniList, and there are plugins to enable downloading from online manga reading sites)

ani-cli for watching anime because I'm a crazy person who grew up with MS-DOS and TUI apps make me happy. Also it's often more convenient than having to check ten different websites to find the one anime you want to watch only to discover that half of them have been taken down.

yt-dlp to download videos from YouTube. I use wrapper scripts to make it more convenient to use because I'm lazy, but it's great.

https://ledger-cli.org/

Plain text double-entry bookkeeping for home finance and budgeting. Pretty sweet, once you get used to it.

I don't know if it has been already mentioned but I love bat a lot. It's like the cat command but with colors and line numbers. Makes things a little bit easier.

OTPClient

Awesome TOTP app that can import your Aegis Authenticator database, which then you can keep in sync with your phone and desktop.

Super handy.

Redshift, it changes the brightness/color on the display bluer closer to midday and redder at night. Twilight is a similar app on android.

https://actualbudget.org/

https://github.com/actualbudget/actual

It's software for budgeting. You can run it entirely local, or set it up as a server. It stores everything in an SQLite dB, let's you import and export CSV files, and it gives you great options for querying and seeing reports on your financial records.

I've got a handful of accounts, so I set up a small python utility to parse the CSVs my banks give me to something actually sensible and readable for Actual. I do that once a month, add a reconciliation entry here and there, and it's all kept on sync very well.

I have one morbid report titled "money pissed down the landlord drain", and it's far higher than I'd like to be. But it's got close to every penny I've ever spent on that bullshit in one place.

Any benefits to help notes stuff over obsidian or other?

this is more a selfhosted thing but i adore it: https://github.com/silverbulletmd/silverbullet

you can write your own Javascript functions (will be lua in the near future) and use them directly in the editor.