| strutcpp | Collection of string utilities |
| spaceFM | Multi-panel tabbed file manager |
| stardust | Space flight simulator |
| systemd-lock-handler | Translates systemd-system lock/sleep signals into systemd-user target activations |
| sonic-lineup | Comparative visualisation of related audio recordings |
| smtube | Play and download Youtube videos |
| swayimg | Image viewer for Sway/Wayland |
| simple64 | Easy to use N64 emulator |
| sshfs | FUSE-based filesystem that allows remote filesystems to be mounted over SSH |
| speechd | Common interface to speech synthesis |
| superTux | Classic 2D jump'n run sidescroller game |
| seer | Qt gui frontend for GDB |
| shadershark | OpenGL/X11 application for GNU/Linux consisting of a single window that shows simple 3D scene of a textured rectangle with applied vertex and fragment shaders (GLSL) |
| spatial-shell | Implementing a spatial model inspired by Material Shell, for i3 and sway |
| shticker-book-unwritten | Minimal CLI launcher for the Toontown Rewritten MMORPG |
| splayer | Simple Netease Cloud Music player |
| storrent | Implementation of the BitTorrent protocol that is optimised for streaming media |
| sysvinit | Utilities related to booting and shutdown |
| tiscamera | Linux sources and UVC firmwares for The Imaging Source cameras |
| scream | Audio receiver for the Scream virtual network sound card |
| tana | Intelligent all-in-one workspace |
| shortwave | Find and listen to internet radio stations |
| steamtinkerlaunch | Linux wrapper tool for use with the Steam client for custom launch options and 3rd party programs |
| sxiv | Simple X Image Viewer |
| shadow | Suite containing authentication-related tools such as passwd and su |
| taktuk | Efficient, large scale, parallel remote execution of commands |
| sequeler | Friendly SQL Client |
| sunxi-tools | Tools for Allwinner SoC devices |
| swaymux | Program to quickly navigate sway |
| tinycdb | Utility to manipulate constant databases (cdb) |
| taler-sync | Backup and synchronization service |
| sway-audio-idle-inhibit | Prevent swayidle/hypridle from sleeping |
| shaderbg | Shader-based live wallpaper program for compositors that support wlr-layer-shell (Sway and others) |
| smartdeblur | Tool for restoring blurry and defocused images |
| snort | Network intrusion prevention and detection system (IDS/IPS) |
| tennix | Classic Championship Tour 2011 |
| snippetexpander | Your little expandable text snippet helper CLI |
| statifier | Tool for creating static Linux binaries |
| sdr-j-fm | SDR based FM radio receiver software |
| showmethekey | Show keys you typed on screen |
| thunar | Xfce file manager |
| thunar-vcs-plugin | Thunar plugin providing support for Subversion and Git |
| serious-sam-classic | Open source game engine version developed by Croteam for Serious Sam Classic |
| simpledbus | C++ wrapper for libdbus-1 |
| tinywl | A "minimum viable product" Wayland compositor based on wlroots |
| sqlite-jdbc | Library for accessing and creating SQLite database files in Java |
| timeshift-minimal | System restore tool for Linux (without runtime dependencies) |
| swaylock-fancy | swaylock bash script that takes a screenshot of the desktop, blurs the background and adds a lock icon and text |
| taskopen | Script for taking notes and open urls with taskwarrior |
| spideroak | Secure online backup and sychronization |
| socalabs-rp2a03 | Socalabs NES Ricoh 2A03 Emulation Plugin |
| tinyfecvpn | VPN Designed for Lossy Links, with Build-in Forward Error Correction(FEC) Support |
| shtns | High performance library for Spherical Harmonic Transform |
| somebar | dwm-like bar for dwl |
| screenkey | Screencast tool to display your keys inspired by Screenflick |
| spotifywm | Wrapper around Spotify that correctly sets class name before opening the window |
| swaycwd | Returns cwd for shell in currently focused sway window, or home directory if cannot find shell |
| taler-merchant | Merchant component for the GNU Taler electronic payment system |
| srm-cuarzo | Simple Rendering Manager |
| spot | Native Spotify client for the GNOME desktop |
| sparse | Semantic parser for C |
| simplescreenrecorder | Screen recorder for Linux |
| swayosd | GTK based on screen display for keyboard shortcuts |
| t4kcommon | Library of code shared between tuxmath and tuxtype |
| scanmem | Memory scanner for finding and poking addresses in executing processes |
| tcptrack | libpcap based program for live TCP connection monitoring |
| snapper | Tool for Linux filesystem snapshot management |
| timeshift | System restore tool for Linux |
| thinkfan | Simple, lightweight fan control program |
| sc-controller | User-mode driver and GUI for Steam Controller and other controllers |
| systembus-notify | System bus notification daemon |
| ssrc | High quality audio sampling rate converter |
| sirius | Domain specific library for electronic structure calculations |
| scorched3d | 3D Clone of the classic Scorched Earth |
| scite | SCIntilla based Text Editor |
| serigy | Store important information from your clipboard selectively and securely |
| tiny8086 | Open-source small 8086 emulator |
| seturgent | Set an application's urgency hint (or not) |
| siglo | GTK app to sync InfiniTime watch with PinePhone |
| taler-twister | Fault injector for HTTP traffic |
| tftp-hpa | TFTP tools - a lot of fixes on top of BSD TFTP |
| swaynotificationcenter | Simple notification daemon with a GUI built for Sway |
| theforceengine | Modern "Jedi Engine" replacement supporting Dark Forces, mods, and in the future, Outlaws |
| swaybg | Wallpaper tool for Wayland compositors |
| steamworks | Configuration information distributed over LDAP in near realtime |
| systemd-bootchart | Boot performance graphing tool from systemd |
| solarus | Zelda-like ARPG game engine |
| sil-q | Roguelike game set in the First Age of Middle-earth |
| swappy | Wayland native snapshot editing tool, inspired by Snappy on macOS |
| tdrop | Glorified WM-Independent Dropdown Creator |
| system-config-printer | |
| stretchly | Break time reminder app |
| svaba | Structural variant and INDEL caller for DNA sequencing data, using genome-wide local assembly |
| srb2 | Sonic Robo Blast 2 is a 3D Sonic the Hedgehog fangame based on a modified version of Doom Legacy |
| tela-circle-icon-theme | Flat and colorful personality icon theme |
| texmaker | TeX and LaTeX editor |
| sgt-puzzles | Simon Tatham's portable puzzle collection |
| svxlink | Advanced repeater controller and EchoLink software |
| tetraproc | Converts the A-format signals from a tetrahedral Ambisonic microphone into B-format signals ready for recording |
| swaysettings | GUI for configuring your sway desktop |