CLI — independent software & tools
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cayley
Graph database inspired by Freebase and Knowledge Graph
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cbc
Mixed integer linear programming solver
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cbfmt
Format codeblocks inside markdown and org documents
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cbindgen
Project for generating C bindings from Rust code
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cbmbasic
Commodore BASIC V2 as a scripting language
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cbmc
C Bounded Model Checker
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cbonsai
Console Bonsai is a bonsai tree generator, written in C using ncurses
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cc-switch-cli
All-in-one assistant tool for Claude Code, Codex, Gemini, OpenCode and OpenClaw
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cc65
6502 C compiler
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ccache
Object-file caching compiler wrapper
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ccal
Create Chinese calendars for print or browsing
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ccat
Like cat but displays content with syntax highlighting
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ccd2iso
Convert CloneCD images to ISO images
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ccextractor
Tool for extracting closed captions from video files
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ccfits
Object oriented interface to the cfitsio library
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ccheck
Check X509 certificate expiration from the command-line, with TAP output
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ccls
C/C++/ObjC language server
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ccm
Create and destroy an Apache Cassandra cluster on localhost
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cconv
Iconv based simplified-traditional Chinese conversion tool
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ccrypt
Encrypt and decrypt files and streams
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cctz
C++ library for translating between absolute and civil times
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ccusage
CLI tool for analyzing Claude Code usage from local JSONL files
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cd-discid
Read CD and get CDDB discid information
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cdargs
Directory bookmarking system - Enhanced cd utilities
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cdb
Create and read constant databases
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cddlib
Double description method for general polyhedral cones
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cdebug
Swiss army knife of container debugging
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cdecl
Turn English phrases to C or C++ declarations
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cdi
C and Fortran Interface to access Climate and NWP model Data
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cdk
Curses development kit provides predefined curses widget for apps
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cdk8s
Define k8s native apps and abstractions using object-oriented programming
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cdktf
Cloud Development Kit for Terraform
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cdlabelgen
CD/DVD inserts and envelopes
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cdncheck
Utility to detect various technology for a given IP address
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cdo
Climate Data Operators
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cdogs-sdl
Classic overhead run-and-gun game
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cdpr
Cisco Discovery Protocol Reporter
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cdrdao
Record CDs in Disk-At-Once mode
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cdrtools
CD/DVD/Blu-ray premastering and recording software
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cdsclient
Tools for querying CDS databases for astronomical data
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cdxgen
Creates CycloneDX Software Bill-of-Materials (SBOM) for projects
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cek
Explore the (overlay) filesystem and layers of OCI container images
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cekit
Container Evolution Kit
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celero
C++ Benchmark Authoring Library/Framework
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censys
Command-line interface for the Censys APIs (censys.io)
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center-im
Text-mode multi-protocol instant messaging client
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cereal
C++11 library for serialization
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ceres-solver
C++ library for large-scale optimization
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cern-ndiff
Numerical diff tool
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certbot
Tool to obtain certs from Let's Encrypt and autoenable HTTPS
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certgraph
Crawl the graph of certificate Alternate Names
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certifi
Mozilla CA bundle for Python
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certigo
Utility to examine and validate certificates in a variety of formats
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certstrap
Tools to bootstrap CAs, certificate requests, and signed certificates
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certsync
Dump NTDS with golden certificates and UnPAC the hash
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cf
Filter to replace numeric timestamps with a formatted date time
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cf-terraforming
CLI to facilitate terraforming your existing Cloudflare resources
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cf2tf
Cloudformation templates to Terraform HCL converter
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cfengine
Help manage and understand IT infrastructure
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cffi
C Foreign Function Interface for Python