GPL-3.0-or-later — independent software & tools
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catgirl
Terminal IRC client
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cbonsai
Console Bonsai is a bonsai tree generator, written in C using ncurses
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ccache
Object-file caching compiler wrapper
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cflow
Generate call graphs from C code
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cfonts
Sexy ANSI fonts for the console
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cgal
Computational Geometry Algorithms Library
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cheops
CHEss OPponent Simulator
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cherrytree
Hierarchical note taking application featuring rich text and syntax highlighting
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chinadns-c
Port of ChinaDNS to C: fix irregularities with DNS in China
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choose-rust
Human-friendly and fast alternative to cut and (sometimes) awk
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chordii
Text file to music sheet converter
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chsrc
Change Source for every software on every platform from the command-line
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cifer
Work on automating classical cipher cracking in C
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clamz
Download MP3 files from Amazon's music store
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claws-mail
User-friendly, lightweight, and fast email client
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clearlooks-phenix
GTK+3 port of the Clearlooks Theme
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cliam
Cloud agnostic IAM permissions enumerator
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clipboard
Cut, copy, and paste anything, anywhere, all from the terminal
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cmatrix
Console Matrix
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cmix
Data compression program with high compression ratio
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cmusfm
Last.fm standalone scrobbler for the cmus music player
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codelimit
Your Refactoring Alarm
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color-code
Free advanced MasterMind clone
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compiledb
Generate a Clang compilation database for Make-based build systems
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conman
Serial console management program supporting a large number of devices
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coreutils
GNU File, Shell, and Text utilities
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cpio
Copies files into or out of a cpio or tar archive
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cpmtools
Tools to access CP/M file systems
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cppcheck
Static analysis of C and C++ code
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cppi
Indent C preprocessor directives to reflect their nesting
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cppman
C++ 98/11/14/17/20 manual pages from cplusplus.com and cppreference.com
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curseofwar
Fast-paced action strategy game
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cve-bin-tool
Scans binaries and SBOMs for known vulnerabilities and prepares reports
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cyme
List system USB buses and devices
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darkice
Live audio streamer
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datamash
Tool to perform numerical, textual & statistical operations
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dbacl
Digramic Bayesian classifier
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dc3dd
Patched GNU dd that is intended for forensic acquisition of data
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dcd
Auto-complete program for the D programming language
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ddgr
DuckDuckGo from the terminal
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deja-gnu
Framework for testing other programs
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depqbf
Solver for quantified boolean formulae (QBF)
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desed
Debugger for Sed
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diamond
Accelerated BLAST compatible local sequence aligner
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diceware
Passphrases to remember
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diction
GNU diction and style
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diffoscope
In-depth comparison of files, archives, and directories
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diffutils
File comparison utilities
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dillo
Fast and small graphical web browser
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direvent
Monitors events in the file system directories
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dirt
Experimental sample playback
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dissent
GTK4 Discord client in Go
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djhtml
Django/Jinja template indenter
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djlint
Lint & Format HTML Templates
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djvu2pdf
Small tool to convert Djvu files to PDF files
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docx2txt
Converts Microsoft Office docx documents to equivalent text documents
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doggo
Command-line DNS Client for Humans
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dolphie
Feature-rich top tool for monitoring MySQL
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dosfstools
Tools to create, check and label file systems of the FAT family
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dotdrop
Save your dotfiles once, deploy them everywhere