| skippy-xd | Expose-style compositing-based standalone window switcher |
| sticky-notes | Simple sticky notes app for GNOME |
| sysctl | |
| seturgent | Set an application's urgency hint (or not) |
| scanmem | Memory scanner for finding and poking addresses in executing processes |
| svkbd | Simple virtual keyboard |
| simplescreenrecorder | Screen recorder for Linux |
| scanbd | Scanner button daemon |
| scrutiny | Hard Drive S.M.A.R.T Monitoring, Historical Trends & Real World Failure Thresholds |
| spotify-tray | Adds a tray icon to the Spotify Linux client application |
| sope | Extensive set of frameworks which form a complete Web application server environment |
| swaylock-fancy | swaylock bash script that takes a screenshot of the desktop, blurs the background and adds a lock icon and text |
| spectre-meltdown-checker | Spectre & Meltdown vulnerability/mitigation checker for Linux |
| syscall_limiter | Start Linux programs with only selected syscalls enabled |
| sbs | Simple background setter with 200 lines of code |
| sgt-puzzles-mobile | Simon Tatham's portable puzzle collection |
| stellar-core | Implements the Stellar Consensus Protocol, a federated consensus protocol |
| sly | Friendly image editor |
| slurp | Select a region in a Wayland compositor |
| tlp-pd | Power-rofiles-daemon like DBus interface for TLP |
| smooth | Object-oriented class library for C++ application development |
| sweethome3d.textures-editor | Easily create SH3T files and edit the properties of the texture images it contain |
| slop | Queries for a selection from the user and prints the region to stdout |
| strawberry | Music player and music collection organizer |
| taler-challenger | OAuth 2.0-based authentication service that validates user can receive messages at a certain address |
| slsnif | Serial line sniffer |
| soi | Physics-based puzzle game |
| thumbdrives | USB mass storage emulator for Linux handhelds |
| simple-scan | Simple scanning utility |
| spaceFM | Multi-panel tabbed file manager |
| showmethekey | Show keys you typed on screen |
| shishi | Implementation of the Kerberos 5 network security system |
| skawarePackages.s6-linux-utils | Set of minimalistic Linux-specific system utilities |
| tiled | Free, easy to use and flexible tile map editor |
| tinyfecvpn | VPN Designed for Lossy Links, with Build-in Forward Error Correction(FEC) Support |
| squid | Caching proxy for the Web supporting HTTP, HTTPS, FTP, and more |
| steamworks | Configuration information distributed over LDAP in near realtime |
| swaymux | Program to quickly navigate sway |
| timekpr | Manages and restricts user screen time by enforcing time limits |
| tellico | Collection management software, free and simple |
| syntex | Texture synthesis from examples |
| sblast | Blast your Linux audio to DLNA receivers |
| sxiv | Simple X Image Viewer |
| textpieces | Swiss knife of text processing |
| ssh-tpm-agent | SSH agent with support for TPM sealed keys for public key authentication |
| thunar-media-tags-plugin | Thunar plugin providing tagging and renaming features for media files |
| tdnf | Tiny Dandified Yum |
| seq24 | Minimal loop based midi sequencer |
| sqlitestudio | Free, open source, multi-platform SQLite database manager |
| surreal-engine | Reimplementation of the original Unreal Engine |
| swappy | Wayland native snapshot editing tool, inspired by Snappy on macOS |
| tagainijisho | Free, open-source Japanese dictionary and kanji lookup tool |
| snzip | Compression/decompression tool based on snappy |
| splayer | Simple Netease Cloud Music player |
| simpledbus | C++ wrapper for libdbus-1 |
| stacktile | Layout generator for the river Wayland compositor |
| teensy-udev-rules | udev rules for the Teensy microcontrollers |
| target-isns | iSNS client for the Linux LIO iSCSI target |
| server-box | Server status & toolbox |
| timeshift-minimal | System restore tool for Linux (without runtime dependencies) |
| tinyalsa | Tiny library to interface with ALSA in the Linux kernel |
| solarc-gtk-theme | Solarized version of the Arc theme |
| scd2html | Generates HTML from scdoc source files |
| snort | Network intrusion prevention and detection system (IDS/IPS) |
| taskserver | Server for synchronising Taskwarrior 2 clients |
| show-midi | Multi-platform GUI application to effortlessly visualize MIDI activity |
| timeshift | System restore tool for Linux |
| timezonemap | GTK+3 Timezone Map Widget |
| telegraph | Write and decode Morse |
| tblite | Light-weight tight-binding framework |
| simp1e-cursors | Aesthetic cursor theme for Linux desktops |
| smplayer | Complete front-end for MPlayer |
| seahorse | Application for managing encryption keys and passwords in the GnomeKeyring |
| smartdeblur | Tool for restoring blurry and defocused images |
| snippetpixie | Your little expandable text snippet helper |
| shadow | Suite containing authentication-related tools such as passwd and su |
| sem | Cli to operate on semaphore ci (2.0) |
| test-drive | Procedural Fortran testing framework |
| tbox | Glib-like multi-platform c library |
| tiny8086 | Open-source small 8086 emulator |
| spot | Native Spotify client for the GNOME desktop |
| squishyball | Tool to perform sample comparison testing on the command line |
| speedscope | Fast and interactive web-based viewer for performance profiles |
| statifier | Tool for creating static Linux binaries |
| snapper-gui | Graphical interface for snapper |
| stenc | SCSI Tape Encryption Manager |
| su | Suite containing authentication-related tools such as passwd and su |
| setools | SELinux Policy Analysis Tools |
| sonic-visualiser | View and analyse contents of music audio files |
| stone-kingdoms | Real-time strategy game made with LÖVE based on the original Stronghold by Firefly studios |
| smartsynchronize | File Manager, File/Directory Compare |
| smartdns | Local DNS server to obtain the fastest website IP for the best Internet experience |
| tautulli | Python based monitoring and tracking tool for Plex Media Server |
| sfxr-qt | Sound effect generator, QtQuick port of sfxr |
| taler-exchange | Exchange component for the GNU Taler electronic payment system |
| slock | Simple X display locker |
| shaderbg | Shader-based live wallpaper program for compositors that support wlr-layer-shell (Sway and others) |
| swaysettings | GUI for configuring your sway desktop |
| sqlite-jdbc | Library for accessing and creating SQLite database files in Java |
| taler-merchant | Merchant component for the GNU Taler electronic payment system |