Best open-source Go projects

A lightweight, self-hosted OpenID Connect identity provider for small teams, with password login, mandatory TOTP and RBAC.

Self-hosted mail server for your own domain, with SMTP/IMAP/POP3, CardDAV/CalDAV, a React webmail and admin console, deployed via Docker Compose.

A config-driven terminal dashboard built on Bubble Tea, where one YAML file defines shell-command data sources and a grid of widgets.

A lightweight terminal TUI for managing SSH, serial, telnet, SFTP, FTP, WebDAV and S3 connections in one binary.

A Web Application Firewall middleware for the Caddy web server, with regex rules, IP/DNS/ASN/GeoIP filtering, rate limiting and Tor exit-node blocking.

A Go CLI and GitHub CLI extension that starts a local web server to preview GitHub Flavored Markdown, including offline.

A Go implementation of the endlessh SSH tarpit that exports Prometheus metrics and ships with a Grafana dashboard for attacker statistics.

A lightweight, framework-agnostic command-line tool for managing plain SQL database migrations across teams and environments.

Lightweight self-hosted server monitoring with a web dashboard, Docker container stats, historical data and alerts.

Self-hosted monitoring for apps on small servers: a single Go binary that polls Spring Boot, Quarkus, Micronaut or custom JSON endpoints and stores history in SQLite, with no Prometheus or Grafana.

An AI-powered disk cleanup assistant that uses an LLM to find junk files and manages symbolic links and file migrations on Windows.

Open-source database governance platform that controls schema changes, access, and queries across major databases for both humans and AI agents.

Open-source AI gateway giving one OpenAI-compatible API across 23+ LLM providers, with failover, load balancing, semantic caching and virtual keys.

Open-source Go and Python runtime for serverless AI workloads, covering GPU inference endpoints, sandboxes, and background tasks.

Open-source framework for running compute jobs where data lives, instead of moving large datasets across networks.

Self-hostable authentication server covering passwordless login, passkeys, MFA, SSO and social login, with a pre-built login UI and admin portal.

Apache Answer is an open-source Q&A platform for building community forums, help centers, and knowledge management sites.

Open-source web-based control panel for managing Linux servers, websites, Docker containers, databases, and AI agents.

Turns your Android phone into an SMS gateway, letting you send and receive text messages through a simple HTTP API.

A programmable automation engine that builds, tests and ships codebases using containers, running locally, in CI or in the cloud.