Web and API SMTP testing tool written in Go; standalone server that captures and displays outgoing emails.

Static analyzer for C and C++ code that detects memory leaks, buffer overruns, and other defects.

Language Server Protocol (LSP) server for Go, enabling IDE-like editor features via gopls.

High-performance, distributed in-memory cache daemon for frequently-accessed data.

C library for generating PDF files with text, images, fonts, and encryption.

Java-based scripting language runtime and SDK for dynamic JVM programming.

Open-source .NET runtime and development framework for cross-platform C# and .NET applications.

Lightweight C library for 2D and 3D graphics data types and operations.

Go command-line tool for iterative Kubernetes app development with automated build, push, and deployment.

Build automation and project management tool for Clojure, written in Clojure.

Versioned legacy key-value database library (Berkeley DB 5.3) for C/C++ applications.

.NET runtime and SDK for C#/F#/VB.NET (version 9.x); keg-only versioned formula.

C shared library providing a platform-independent interface to Linux kernel seccomp syscall filtering via BPF.

Fast, customizable Zsh theme with interactive configuration wizard and instant prompt display.

Code coverage measurement tool for compiled binaries, Python, and shell scripts.

Library and command-line tools for reading barcodes from images and video streams.

PostgreSQL extension adding geographic and spatial data types, functions, and indexes for GIS applications.

Command-line utility for managing and configuring Istio service mesh deployments on Kubernetes.

Go command-line tool to format and lint YAML files with extensible customization.

Lightweight BitTorrent client command-line interface for downloading and seeding torrents.

Python CLI coding assistant powered by Mistral AI models for conversational codebase exploration and modification.

Java build tool that uses XML configuration files to compile, test, and package Java projects.

C library for HTTP client/server functionality built on GLib, with async I/O and cookie/session handling.

Fast, standards-based static type checker for Python with command-line and IDE integration.

Node.js CLI for OpenClaw, a personal AI assistant that executes tasks across platforms.

C++ library for physics-based dynamic simulation and robotics algorithms.

Python tool to convert images to PDF with lossless JPEG embedding and minimal file size.

Rust command-line tool for displaying filesystem information with a modern, colorful interface.

Go-based command-line client for managing Alibaba Cloud resources and services via API.

Command-line tool for creating and managing Amazon EKS Kubernetes clusters.

macOS command-line utility to configure multi-display resolutions, arrangements, and rotations; XRandR equivalent for macOS.

C++11 header-only library for parsing command-line arguments with intuitive API design.

Go kubectl plugin for OpenID Connect authentication with automatic browser-based login flow.

Header-only C++ binding for ZeroMQ (libzmq) messaging library.

Command-line code formatter for Swift source code that powers SourceKit-LSP.

Fast, lightweight C library for encoding GIF images and animations with color quantization and optimization.

Interactive PostgreSQL command-line client with auto-completion and syntax highlighting.

PHP 8.2 interpreter and runtime for web applications and command-line scripts (keg-only versioned formula).

Open-source client for Cisco AnyConnect SSL VPN connections from the command line.

C++ physics simulation library with Python bindings for real-time rigid-body dynamics.

Cross-platform system and process monitor written in Rust with an interactive TUI, displaying CPU, memory, disk, and network metrics.

Static analysis security scanner for Terraform code, written in Go.

Google's build system for large multi-language, multi-platform codebases, written in Java.

Pluggable Authentication Modules (PAM) library for Linux user authentication and session management.

Command-line interface for Google Workspace apps including Drive, Gmail, Calendar, Sheets, Docs, and Chat.

Go command-line completion engine that generates shell completions for any command.

JPEG encoder library with improved compression efficiency, compatible with libjpeg API.

C library providing backward-compatible USB device access API wrapping libusb 1.0.

Swift script runner with inline dependency declarations via import comments.

Shared library providing AMPL Solver Library (ASL) for mathematical optimization modeling and solver integration.

Fast, lightweight search backend written in Rust that indexes text and returns matching identifiers in microseconds.

C library for reading MaxMind DB geolocation and IP intelligence database files.

Command-line linter for Markdown files with autofix support, powered by Node.js.

SMB/CIFS file, print, and login server for UNIX — implements Windows file sharing and authentication protocols.

C library for parsing and generating JSON with a streaming API.

C library and CLI tool to convert images and animations into Unicode/ASCII/ANSI art for terminal display.

Command-line interface for managing Hetzner Cloud infrastructure (servers, networks, volumes, etc.)

Python command-line tool for detecting and exploiting SQL injection vulnerabilities in web applications and databases.

Wi-Fi network auditing and WEP/WPA password cracking tool suite written in C.

Erlang programming language runtime and compiler for distributed, fault-tolerant systems; version 28.x (keg-only).