Best open source Go repositories on GitHub

gohugoio/hugo

Go

The world’s fastest framework for building websites.

superplanehq/superplane

Go

The open source control plane for agentic engineering.

opentofu/registry

Go

Metadata and tooling for the OpenTofu registry

luckyPipewrench/pipelock

Go

Open-source AI agent firewall for MCP security and agent egress. Scans mediated HTTP, MCP, A2A, and WebSocket traffic for exfiltration, SSRF, and prompt injection, and emits mediator-signed action receipts: verifiable audit evidence from outside the agent.

nextlevelbuilder/goclaw

Go

GoClaw - GoClaw is OpenClaw rebuilt in Go — with multi-tenant isolation, 5-layer security, and native concurrency. Deploy AI agent teams at scale without compromising on safety.

emiago/sipgo

Go

SIP library for writing fast SIP services in GO

3052/rosso

Go

streaming API authentication, metadata, and DRM playback

openlibrecommunity/olcrtc

Go

olcrtc - implementation of bb22 using legal meet services to access web outside the whitelist

richardwilkes/gcs

Go

GURPS Character Sheet

johnkerl/miller

Go

Miller is like awk, sed, cut, join, and sort for name-indexed data such as CSV, TSV, and tabular JSON

matrixorigin/matrixone

Go

AI-native HTAP database with Git-for-Data and built-in vector search, serving as the data and memory backbone for intelligent agents and applications.

jmigpin/editor

Go

Source code editor in pure Go.

cloudposse/atmos

Go

👽 Terraform Orchestration Tool for DevOps. Keep environment configuration DRY with hierarchical imports of configurations, inheritance, and WAY more. Native support for Terraform and Helmfile.

devantler-tech/ksail

Go

All-in-one Kubernetes SDK: create, manage, and operate clusters across distributions (Kind, K3d, Talos, VCluster) with built-in GitOps, secrets, AI assistant, and MCP server. Only requires Docker or a Cloud Provider.

DanielLavrushin/b4

Go

Network packet processor with a friendly UI for circumventing Deep Packet Inspection (DPI) systems.

maximhq/bifrost

Go

Fastest enterprise AI gateway (50x faster than LiteLLM) with adaptive load balancer, cluster mode, guardrails, 1000+ models support & <100 µs overhead at 5k RPS.

leodip/goiabada

Go

Goiabada is an OAuth2 / OpenID Connect server written in Go.

k0sproject/k0s

Go

k0s - The Zero Friction Kubernetes

weaviate/weaviate

Go

Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of a cloud-native database​.

craigmccaskill/posthorn

Go

Self-hosted email gateway between your apps and a transactional mail provider (Postmark, Resend, Mailgun, AWS SES, or outbound-SMTP). Three ingress shapes (HTTP form, HTTP API, SMTP). One Docker container, one TOML config.