Asklemmy

• mpv (video player)
• Logseq (knowledge base/journal)
• KISS launcher (android launcher)
• OpenTracks (fitness tracking)
• BreezyWeather (weather)
• KDE connect (app to do shit between pc and phone)
• Tasks (todo)
• AntennaPod (podcasts)
• Hacki (hacker news)
• FlorisBoard (keyboard)
• Unexpected Keyboard (another keyboard)

Syncthing.

Somewhat self promoting for the first two of these items as I'm directly involved. Leaving out the more obvious ones (Linux distro etc.) as they will have been mentioned. I'll stick to some of the less known things I use.

• Pulsar - a community-led fork of the discontinued Atom text editor. Lemmy community
• Joplin - note taking app. Lemmy community
• Halloy - IRC client built in Rust and Iced
• Navi - Command line cheatsheet tool
• GitUI - Terminal UI git tool
• Skim - Fuzzy finder
• Dust - Disk usage tool (like du)

• Termux
  Holy hell. So much it can do. Right now I am using it to transcode MPEG2 videos to AV1. With CRF 25, Preset 5, with a 480p30 video I get 5fps in Termux on my older Snapdragon 860. Meanwhile my laptop's Ryzen 3 3200U does 2fps.
  You can run different server applications. Some are supported natively (e.g.: Tinyproxy, Privoxy, Squid HTTP proxy, apache2, nginx, navidrome, OpenSSH, TigerVNC, rsync, xorg-server, xwayland, xrdp,...) and some can run in proot (e.g.: Jellyfin, NextCloud). If you already have some web server and want it public, there's cloudflared too, so you can access it via Cloudflare tunnel.

• RTL-SDR driver
  Allows connecting RTL-SDR on Android and starting RTL-TCP server.

• SDR++
  The best general-purpose SDR app available on Android, GNU+Linux, Windows and MacOS.

• KDE Connect
  Nicely connects phone with a computer. Data transfers, remote control, finding your phone, synchronizing notifications.

• LibreTorrent
  Great client for Android.

There's more, but those I don't use daily, or have already been mentioned.

• Fluent Reader – to very quickly get a lot of news which I need for work
• Beeper – for the 100 chat apps I need to use to stay in contact with my friends who don't use Matrix
• Nheko – for the based friends who have [matrix] accounts and chats with industry professionals in my field
• FluffyChat – mobile device [matrix] client
• Logseq – as second brain, works better for me than Obsidian
• Jameica – for online banking and accounting
• K-9 Mail / Thunderbird – mail client
• DecSync CC – for synchronising contacts with multiple devices through Syncthing
• ActivityWatch – to track everything I do in case I forget to book time in my corporate time sheet, or if I want to know how long I played games in contrast to programming
• KDE Plasma – best desktop environment boosting my productivity to about 140% of what I could do with Windows 10
• Qalculate! – very fast and easy to use scientific calculator, can also do conversions like "1h50min → min" or "15€ → $"
• Aegis – TOTP generator for mobile
• VLC – plays everything you throw at it
• mpv – plays everything you throw at it, if you installed the right codecs, and also does fancy ML-based GPU upscaling in my case
• KeePassXC, KeePassDX – password managers integrated on Desktop, Laptop, Tablet and Phone
• Syncthing – to automatically and seamlessly sync all my devices (Laptop, Desktop, Tablet, Phone, second Laptop, Servers, …)
• Firefox Developer Edition, Librewolf – browsing the web without Chromium
• Chromium – for PWAs like Teams, Outlook, Discord

Well, there's the usual: GIMP. Lemmy & Firefish instances. Linux OS. Syncthing. Firefox. Inkscape.

qOwnNotes is cool and I don't hear much about it.

Also shout out to libre games. GZDoom and UnCiv mostly. But MOSTLY GZDoom. GZDoom is a platform, not a game.

No mention of Thunderbird yet??

On my server:
OpenMediaVault (NAS OS based on Debian)
Syncthing
Home Assistant
Zigbee2MQTT
Docker
Portainer
Radicale
Navidrome

On my phone:
Syncthing
Tailscale
Feeder
DAVx⁵
OSS Document Scanner
RPNcalc
DSub
EDSY

On my PC:
Odyssey Material Helper
EDDiscovery
EDSY
ObservatoryCore
Paint.net and GIMP
OpenRGB
Tailscale

AnkiDroid

MakeMKV! I primarily rent Blu-Ray from my library and sometimes enjoy it enough to rip it and keep it (for personal use)

KeepassXC

Ardour

Thunderbird

Nextcloud

Some subset of modern Linux distro - Firefox, Emacs, Git, Tmux, OpenSSH, i3, sway... Android - F-Droid stuff

Element

On mobile:

• Feeder (RSS reader)
• K9-Mail / Thunderbird
• Mull (Deblobbed and privacy oriented Firefox Mobile fork)
• Catima (Loyalty card manager)
• Cofi (Coffee timer)
• Neo Launcher

On desktop:

• Spotify-qt and Librespot

I use a bunch of other stuff as well but these are the one I truly use daily that haven't been mentioned yet.

daily and both (desktop and mobile, cross-platform),

Mozilla Firefox

• Linux
• GrapheneOS
• OpenWRT
• webservers / the internet (nginx, databases, storage, networking, ...)
• Mull / Librewolf
• Nextcloud (contacts / calendar sync ...)
• an email server and client
• Matrix chat
• LG WebOS on my TV
• Home Assistant
• lots of user applications

There isn't much important proprietary software in this apartment except maybe for the firmware of the dishwasher / microwave, washing machine and additionally whatever software runs in an old car.

I self host:

• Miniflux - RSS Reeader
• Alexandrite - Lemmy Client
• Invidious - Youtube frontend

Libretube

Vlc

OpenRadio is a good one if you like radio and music in general. It has radio stations from everywhere and from almost every music style.

• KDE Plasma
• Okular
• Dolphin
• Librewolf
• FreeTube
• Debian
• LyX
• Eternity for Lemmy
• Git

Goodtime (a pomodoro app)

Habits

Jellyfin

Joplin

Firefox, Neovim, Tmux, Various KDE applications, Nextcloud, Wine, Signal, OpenSSH

Probably many more

Radarr, Sonarr, Prowlarr, Jellyseerr, Wizarr, Jellyfin, qBittorrent

Jellyfin and findroid. Mainly findroid.

Also PipePipe (piped app for youtube) and libretube

I also play an open source version of solitaire and a game called box stacker, both are from the f droid store

And ofc, infinity for lemmy

• Habits
• Tasks
• Quillpad
• Firefox
• Bitwarden
• Immich
• Miniflux
• Wallabag (also testing Omnivore)

Godot

On Smartphone : OpenKeychain, Tor Browser, SimplesTools Collection, FairMail, NewPipe, Fdroid, Organic Maps, Cake Wallet, Aegis

On PC : Emacs, Gimp, Audacity

FairEmail

I want to highlight a practical usecase for password management with open source tools. Keepass (gnome secrets on computers, and keepassdx on mobile) with syncthing syncing encrypted password files between the devices. Very effective so far. Passwords are synced seamlessly.

Define use? Anyone using the Internet relies on a lot of FOSS, even if we just consider webservers kn the www.

Like others, the list of non foss is shorter for me.

VLC, audacity, organic maps, freetube

SumatraPDF
NotePad++

• Voyager for Lemmy
• Harmonic for Hacker News
• OpenBoard

• GNU/Linux
• Web Browser
• GIMP

gluetun

VPN client in a thin Docker container for multiple VPN providers, written in Go, and using OpenVPN or Wireguard, DNS over TLS, with a few proxy servers built-in.