| suricata | Free and open source, mature, fast and robust network threat detection engine |
| snippetexpanderd | Your little expandable text snippet helper daemon |
| soapui | Most Advanced REST & SOAP Testing Tool in the World |
| syspower | Simple power menu/shutdown screen for Hyprland |
| ssl-cert-check | Bourne shell script that can be used to report on expiring SSL certificates |
| snake4 | Game starring a fruit-eating snake |
| taglib-sharp | Library for reading and writing metadata in media files |
| slop | Queries for a selection from the user and prints the region to stdout |
| sqlauncher | Simple QT6 Program Launcher |
| supervise | Minimal unprivileged process supervisor making use of modern Linux features |
| timezonemap | GTK+3 Timezone Map Widget |
| sssd | System Security Services Daemon |
| ssh-tpm-agent | SSH agent with support for TPM sealed keys for public key authentication |
| scorched3d | 3D Clone of the classic Scorched Earth |
| ssw | GNU Spread Sheet Widget |
| swapspace | Dynamic swap manager for Linux |
| syshud | Simple heads up display written in gtkmm 4 |
| sideswap | Cross‑platform, non‑custodial wallet and atomic swap marketplace for the Liquid Network |
| stenc | SCSI Tape Encryption Manager |
| tinycmmc | Tiny CMake Module Collections |
| tangram | Run web apps on your desktop |
| sx | Simple alternative to both xinit and startx for starting a Xorg server |
| smbnetfs | FUSE FS for mounting Samba shares |
| shoreline | Very fast (200+ Gbit/s) pixelflut server written in C with full IPv6 support |
| supermodel | Sega Model 3 Arcade Emulator |
| surf-display | Kiosk browser session manager based on the surf browser |
| slsnif | Serial line sniffer |
| sil | Rogue-like game set in the First Age of Middle-earth |
| slade-unstable | Doom editor |
| sstp | SSTP client for Linux |
| tilda | Gtk based drop down terminal for Linux and Unix |
| service-wrapper | Convenient wrapper for the systemctl commands, borrow from Ubuntu |
| slweb | Static website generator which aims at being simplistic |
| surrealist | Visual management of your SurrealDB database |
| splitcode | Tool for flexible, efficient parsing, interpreting, and editing of technical sequences in sequencing reads |
| teensy-udev-rules | udev rules for the Teensy microcontrollers |
| sutils | Small command-line utilities |
| srt-live-server | Open-source low latency livestreaming server, based on Secure Reliable Tranport (SRT) |
| sysvtools | Utilities related to booting and shutdown |
| stone-kingdoms | Real-time strategy game made with LÖVE based on the original Stronghold by Firefly studios |
| tint2 | Simple panel/taskbar unintrusive and light (memory, cpu, aestetic) |
| tbox | Glib-like multi-platform c library |
| solarus-quest-editor | Editor for the Zelda-like ARPG game engine, Solarus |
| sly | Friendly image editor |
| server-box | Server status & toolbox |
| simple-live-app | Simply Watch Live |
| tango-cpp | Tango Distributed Control System - C++ library |
| supercollider | Programming language for real time audio synthesis |
| simplescreenrecorder | Screen recorder for Linux |
| swaylock-fancy | swaylock bash script that takes a screenshot of the desktop, blurs the background and adds a lock icon and text |
| sdl-jstest | Simple SDL joystick test application for the console |
| sxcs | Minimal X11 Color Picker and Magnifier |
| snap7 | Step7 Open Source Ethernet Communication Suite |
| sticky-notes | Simple sticky notes app for GNOME |
| tinywl | A "minimum viable product" Wayland compositor based on wlroots |
| supermariowar | Fan-made multiplayer Super Mario Bros. style deathmatch game |
| shortwave | Find and listen to internet radio stations |
| tinygettext | A simple gettext replacement that works directly on .po files |
| tinymembench | Simple benchmark for memory throughput and latency |
| snis-unwrapped | Space Nerds In Space, a multi-player spaceship bridge simulator |
| srb2 | Sonic Robo Blast 2 is a 3D Sonic the Hedgehog fangame based on a modified version of Doom Legacy |
| tiny8086 | Open-source small 8086 emulator |
| spatial-shell | Implementing a spatial model inspired by Material Shell, for i3 and sway |
| swell-foop | Puzzle game, previously known as Same GNOME |
| swiftPackages.Foundation | Core utilities, internationalization, and OS independence for Swift |
| taler-wallet-core | CLI wallet for GNU Taler written in TypeScript and Anastasis Web UI |
| sdnotify-wrapper | Use systemd sd_notify without having to link against libsystemd |
| strutcpp | Collection of string utilities |
| thunderbolt | Thunderbolt user-space components |
| tftp-hpa | TFTP tools - a lot of fixes on top of BSD TFTP |
| televido | Viewer for German-language public broadcasting live streams and archives |
| tellico | Collection management software, free and simple |
| swayfx | Sway, but with eye candy |
| squishyball | Tool to perform sample comparison testing on the command line |
| syslogng | Next-generation syslogd with advanced networking and filtering capabilities |
| sqlitestudio | Free, open source, multi-platform SQLite database manager |
| supercollider-with-plugins | Programming language for real time audio synthesis |
| surreal-engine | Reimplementation of the original Unreal Engine |
| styluslabs-write-bin | Write is a word processor for handwriting |
| seafile-client | Desktop client for Seafile, the Next-generation Open Source Cloud Storage |
| taler-sync | Backup and synchronization service |
| sinit | Very minimal Linux init implementation from suckless.org |
| sgt-puzzles | Simon Tatham's portable puzzle collection |
| taskopen | Script for taking notes and open urls with taskwarrior |
| sleek-grub-theme | Grub bootloader themes, contains light/dark/orange/bigSur styles |
| sturmflut | Fast (80+ Gbit/s) pixelflut client with full IPv6 and animation support |
| swayosd | GTK based on screen display for keyboard shortcuts |
| svkbd | Simple virtual keyboard |
| ta-lib | Add technical analysis to your own financial market trading applications |
| socalabs-sid | Socalabs Commodore 64 SID Emulation Plugin |
| shellhub-agent | Enables easy access any Linux device behind firewall and NAT |
| swift-corelibs-libdispatch | Grand Central Dispatch |
| sbctl | Secure Boot key manager |
| tdrop | Glorified WM-Independent Dropdown Creator |
| stone-phaser | Classic analog phaser effect, made with DPF and Faust |
| swaytools | Collection of simple tools for sway (and i3) |
| smem | Memory usage reporting tool that takes shared memory into account |
| timemachine | JACK audio recorder |
| sonata | Elegant client for the Music Player Daemon |
| systembus-notify | System bus notification daemon |