Open Source CLI Tools
Discover 23 open source CLI Tool repositories from GitHub, each with an analysis of what it does, key features, use cases and alternatives. CLI Tool projects here are most often combined with Go, Python and Networking. Last updated October 3, 2026.
23 repositories · updated October 3, 2026
ReactorCA: Homelab/SOHO Certificate Authority with Age Encryption and Deployment
ReactorCA is a robust Go CLI tool designed for managing a Certificate Authority in homelab or small-office environments. It streamlines the process of issuing, renewing, and deploying TLS certificates for internal services and devices. A key feature is its use of `age` encryption for securely managing private keys, simplifying certificate lifecycle management amidst increasingly shorter validity periods.
nerd-fonts: Add Developer Icons to Programming Fonts
Nerd Fonts patches programming fonts with icon glyphs used by terminals, editors, and status lines. Install a ready-made patched font or use its FontForge-based patcher to customize a font.
f2: Batch Rename Files and Directories Safely
F2 is a cross-platform Go command-line tool for previewing and applying batch renames to files and directories. It suits people managing large file collections who need flexible naming rules and safeguards against conflicts.
gitingest: Turn Git Repositories into LLM-Ready Text
Gitingest packages a Git repository or local directory into a structured text digest designed to provide code context to language models. Use it from the command line, Python, a browser extension, or its hosted web app.
server-tools: Manage Headless Ubuntu Servers from the CLI
Server Tools (`st`) is a modular Bash CLI for common headless Ubuntu server administration, from package management and diagnostics to backups and networking. It suits administrators who want these utilities in one command interface, but is still under active development.
netshow: Monitor Network Connections in Your Terminal
Netshow is an interactive terminal monitor for live TCP connections, with process details, friendly service names, and host or interface bandwidth. It suits developers and operators troubleshooting local network activity on macOS or Linux.
NoxDir: A High-Performance Terminal Utility for Disk Usage Visualization
NoxDir is a powerful, cross-platform command-line tool designed for visualizing file system usage. It offers a responsive, keyboard-driven terminal UI to help users quickly identify and manage disk space. Written in Go, NoxDir supports Windows, macOS, and Linux, making it a versatile utility for system cleanup.
magic-wormhole: Transfer Files Safely Between Computers
Magic Wormhole is a Python library and command-line tool for sending files, directories, or short text between computers using a one-time, human-readable code. It is useful when you want a simple transfer without exchanging a permanent account or memorizing credentials.
IMSI-catcher: Identify Nearby GSM Subscriber Signals
IMSI-catcher uses GSM decoding tools and a software-defined radio receiver to display IMSI values and related carrier details from nearby cellphone signals. It is intended for GSM learning and authorized radio research, not casual use.
Dasel: A Universal CLI Tool for Data Selection and Transformation
Dasel is a powerful command-line tool and Go library designed for querying, modifying, and transforming data across various formats like JSON, YAML, TOML, XML, and CSV. It provides a consistent syntax, making it an invaluable asset for developers, DevOps professionals, and anyone involved in data wrangling tasks. Its ability to convert between formats and integrate into scripts further enhances its utility.
sitefetch: Efficiently Scrape Websites for AI Model Training and Analysis
sitefetch is a powerful command-line utility designed to fetch and save entire websites as plain text files. This tool is particularly useful for preparing large datasets for AI model training, allowing easy consumption of web content. It offers flexible options for page matching and content selection, ensuring relevant data extraction.