GPL-3.0-or-later — independent software & tools
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scummvm
Graphic adventure game interpreter
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sdlpop
Open-source port of Prince of Persia
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search-that-hash
Searches Hash APIs to crack your hash quickly
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sequoia-chameleon-gnupg
Reimplementatilon of gpg and gpgv using Sequoia
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sextractor
Extract catalogs of sources from astronomical images
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sh4d0wup
Signing-key abuse and update exploitation framework
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shadowsocks-libev
Libev port of shadowsocks
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shc
Shell Script Compiler
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shellcheck
Static analysis and lint tool, for (ba)sh scripts
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shelltestrunner
Portable command-line tool for testing command-line programs
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shepherd
Service manager that looks after the herd of system services
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sickchill
Automatic Video Library Manager for TV Shows
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siege
HTTP regression testing and benchmarking utility
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signal-cli
CLI and dbus interface for WhisperSystems/libsignal-service-java
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simple-obfs
Simple obfusacting plugin of shadowsocks-libev
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simple-scan
GNOME document scanning application
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since
Stateful tail: show changes to files since last check
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siril
Astronomical image processing tool
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sleepwatcher
Monitors sleep, wakeup, and idleness of a Mac
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sn0int
Semi-automatic OSINT framework and package manager
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snapcast
Synchronous multiroom audio player
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snapraid
Backup program for disk arrays
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sniffglue
Secure multithreaded packet sniffer
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solarus
Action-RPG game engine
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source-highlight
Source-code syntax highlighter
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spatialite-gui
GUI tool supporting SpatiaLite
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spatialite-tools
CLI tools supporting SpatiaLite
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spek
Acoustic spectrum analyser
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spot
Platform for LTL and ω-automata manipulation
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spytrap-adb
Test a phone for stalkerware and suspicious configuration using usb debugging
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squiid
Do advanced algebraic and RPN calculations
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sshtrix
SSH login cracker
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ssocr
Seven Segment Optical Character Recognition
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standardebooks
Tools for producing ebook files
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steamguard-cli
CLI for steamguard
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stow
Organize software neatly under a single directory tree (e.g. /usr/local)
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strip-nondeterminism
Tool for stripping bits of non-deterministic information from files
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subnetcalc
IPv4/IPv6 subnet calculator
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supermodel
Sega Model 3 arcade emulator
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superseedr
BitTorrent Client in your Terminal
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supertux
Classic 2D jump'n run sidescroller game
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swig
Generate scripting interfaces to C/C++ code
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switch-lan-play
Make you and your friends play games like in a LAN
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t2sz
Compress a file into a seekable zstd with per-file seeking for tar archives
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talloc
Hierarchical, reference-counted memory pool with destructors
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technitium-dns
Self host a DNS server for privacy & security
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telegram-send
Command-line tool to send Telegram messages
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tenere
TUI interface for LLMs written in Rust
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texinfo
Official documentation format of the GNU project
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textidote
Spelling, grammar and style checking on LaTeX documents
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tintin
MUD client
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tock
Powerful time tracking tool for the command-line
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topfew
Finds the field values which appear most often in a stream of records
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topgrade
Upgrade all the things
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topydo
Todo list application using the todo.txt format
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torf-cli
CLI tool for creating, reading and editing torrent files
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toxcore
C library implementing the Tox peer to peer network protocol
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trader
Star Traders
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trafilatura
Discovery, extraction and processing for Web text
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truecrack
Brute-force password cracker for TrueCrypt