• LibreWolf as my browser (it’s a more secure and private version of Firefox, comes with a pre-installed adblocker and removes all the unnecessary junk) (Flatpak)
• Thunderbird for emails (Flatpak)
• Proton Mail Bridge (Flatpak)
• Merkuro Calendar
• Ptyxis (Flatpak) as my terminal. It’s optimized for containers (e.g. distrobox). foot is a pretty good alternative if you want something more minimalistic and don’t care about containers. There are countless other good options like Kitty, Alacritty, Konsole, WezTerm and many others.
• Emacs as my IDE
• KWrite, Kate or NotepadQQ for quickly editing text documents. There’s also Apostrophe for GNOME.
• Akregator as my RSS client (Newsflash for GNOME)
• Strawberry as my music player (Amberol or Rhythmbox if you’re on GNOME)
• Spot for Spotify (Flatpak)
• mpv as my video player (Celluloid on GNOME)
• FreeTube for watching YouTube videos
• This modded YouTube Music client that has an adblocker and many other cool features: https://th-ch.github.io/youtube-music/
• Kasts for listening to podcasts (also has the ability to sync with gpodder.net or self-hosted GPodder on Nextcloud)
• LibreOffice (Flatpak) There’s also OnlyOffice.
• Skanpage for scanning documents
• Notesnook or Standard Notes for end-to-end encrypted note-taking
• Flameshot for screenshots (GitHub, Flatpak)
• Kdenlive for video editing
• GIMP, Krita and Inkscape for graphics stuff
• Blender for animation stuff
• Natron for VFX
• LMMS and Ardour for music production
• Virtual Machine Manager for creating/managing KVM/QEMU VMs (Boxes for GNOME)
• Nextcloud Desktop for connecting to my home server
• Signal Desktop (Flatpak) There’s also Flare for GNOME, which uses GTK instead of Electron and feels more native (Flatpak)
• Element (or NeoChat if you use KDE) for Matrix
• WebCord for Discord
• Konversation or HexChat for IRC (Polari on GNOME)
• Tokodon as my Mastodon client
• qBittorrent for downloading torrent content. (You can use KTorrent on KDE and Fragments on GNOME)
• Gradience to customize GTK4 appearance
• Bitwarden for syncing my password database with my self-hosted Vaultwarden server (also works with their public cloud syncing option). Use KeePassXC if you prefer something entirely local.
• LocalSend for sharing files on the local network (basically works like Airdrop) (also works over NetBird or Tailscale btw)
• NetBird for creating a flat VPN network between my devices
• KDE Connect for better integration with my phone. Also works over NetBird btw. Check out GSConnect if you’re on GNOME.

If you like gaming:

• Lutris for managing my games
• Heroic for Epic Games and GOG
• Prism Launcher for Minecraft
• Dolphin for emulating Wii and GameCube
• Ryujinx for emulating the Switch
• RPCS3 for PS3 emulation
• Vita3K for PSVita emulation
• PPSSPP for PSP
• Cemu for Wii U emulation

For the CLI:

• fish shell
• starship
• fd as an alternative to find
• bat instead of less (written in Rust, has some nice syntax highlighting)
• ripgrep
• fzf
• yt-dlp
• streamlink
• ncmpcpp
• ncspot
• newsboat
• irssi
• weechat and weechat-matrix
• neovim
• I recently discovered this app called twitch-tui, it allows you to use the twitch chat from the terminal

All the apps I listed are free and open source