| busybox | | Utilities for rescue and embedded systems |
| buteo-mtp | | MTP library |
| buteo-sync-plugin-carddav | | Syncs contact data from CardDAV services |
| buteo-sync-plugin-carddav-git | | Syncs contact data from CardDAV services |
| buteo-sync-plugins-social | | Syncs contact data from CardDAV services |
| buteo-syncfw | | Synchronization backend |
| buteo-syncfw-git | | Synchronization backend |
| buteo-syncfw-qml-git | | Buteo sync framework client - QML bindings |
| buttermanager | | Graphical tool to create BTRFS snapshots, balance filesystems and upgrade the system safetly |
| bwm-ng | | A small and simple console-based live bandwidth monitor |
| byacc | | Berkeley reimplementation of the Unix parser generator Yacc |
| byobu | | Enhanced tmux |
| byuu | | A multi-system emulator focused on performance, features, and ease of use |
| bzip2 | | A high-quality data compression program |
| bzip3 | | A better and stronger spiritual successor to BZip2 |
| bzr-fastimport | | Bazaar Fast Import is a plugin providing fast loading of revision control data into Bazaar |
| c-ares | | A C library for asynchronous DNS requests |
| c-client | | Imap client library |
| c-xsc | | A C++ class library |
| c2hs | | C->Haskell FFI tool that gives some cross-language type safety |
| c3c | | Compiler for the C3 language |
| ca-certificates | | Common CA certificates - default providers |
| ca-certificates-cacert | | CAcert.org root certificates |
| ca-certificates-mozilla | | Mozilla's set of trusted CA certificates |
| ca-certificates-utils | | Common CA certificates (utilities) |
| cabal-fmt | | Format .cabal files |
| cabal-install | | The command-line interface for Cabal and Hackage. |
| cabal-plan | | Library and utility for processing cabal's plan.json file |
| cabextract | | A program to extract Microsoft cabinet (.CAB) files |
| cacti | | Network graphing solution using RRDTool |
| cadaver | | Command-line WebDAV client for Unix |
| caddy | | Fast web server with automatic HTTPS |
| caddy2 | | Fast web server with automatic HTTPS |
| cage | | A kiosk compositor for Wayland |
| cairo | | 2D graphics library with support for multiple output devices |
| cairo-dock | | Light eye-candy fully themable animated dock |
| cairo-dock-plug-ins | | Plugins for Cairo-Dock |
| cairo-docs | | 2D graphics library with support for multiple output devices (documentation) |
| cairo-perl | | Perl wrappers for cairo |
| cairomm | | C++ bindings for Cairo |
| cairomm-1.16 | | C++ bindings for Cairo |
| cairomm-1.16-docs | | C++ bindings for Cairo (documentation) |
| cairomm-docs | | C++ bindings for Cairo (documentation) |
| caja | | File manager for the MATE desktop |
| caja-actions | | Extension for Caja which allows the user to add arbitrary program to be launched |
| caja-audio-video-properties | | A Caja extension to see information about audio or video files |
| caja-extensions-common | | Caja extensions (common files) |
| caja-image-converter | | A Caja extension for simple image conversions |
| caja-open-terminal | | A Caja extension for opening terminals in arbitrary local paths |
| caja-sendto | | A Caja extension for sending files |