Open-source startups written in Go

RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs

The fastest path to AI-powered full stack observability, even for lean teams.

Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS

The Cloud Native Application Proxy

Open-source, self-hosted note-taking tool built for quick capture. Markdown-native, lightweight, and fully yours.

MinIO is a high-performance, S3 compatible object store, open sourced under GNU AGPLv3 license.

Open Source realtime backend in 1 file

Git with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD

Make humans and AI agents work as one team — open-source and self-hostable.

🗂️A file list/WebDAV program that supports multiple storages, powered by Gin and Solidjs. / 一个支持多存储的文件列表/WebDAV程序，使用 Gin 和 Solidjs。

LocalAI is the open-source AI engine. Run any model - LLMs, vision, voice, image, video - on any hardware. No GPU required.

A unified AI model hub for aggregation & distribution. It supports cross-converting various LLMs into OpenAI-compatible, Claude-compatible, or Gemini-compatible formats. A centralized gateway for personal and enterprise model management.

The painless way to host your own Git service

Supporting multi-protocol multi-user(Vmess, Vless, Trojan, ShadowSocks, Wireguard, Hysteria, Tunnel, Mixed, HTTP, Tun, MTProto، AmneziaWG)

An open source, self-hosted implementation of the Tailscale control server

AI-Powered Photos App 🌈💎✨

Harness Open Source is an end-to-end developer platform with Source Control Management, CI/CD Pipelines, Hosted Developer Environments, and Artifact Registries.

CasaOS - A simple, easy-to-use, elegant open-source Personal Cloud system.

A self-hosted dashboard that puts all your feeds in one place

🔥 1Panel is a modern, open-source Linux server management panel and a lightweight AI management platform.

The easiest, most secure way to use WireGuard and 2FA.

File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview and edit your files.

SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables, designed to handle billions of files with O(1) disk access and effortless horizontal scaling.

Send push notifications to your phone or desktop using PUT/POST

一款轻量级、高性能、功能强大的内网穿透代理服务器。支持tcp、udp、socks5、http等几乎所有流量转发，可用来访问内网网站、本地支付接口调试、ssh访问、远程桌面，内网dns解析、内网socks5代理等等……，并带有功能强大的web管理端。a lightweight, high-performance, powerful intranet penetration proxy server, with a powerful web management terminal.

CockroachDB — the cloud native, distributed SQL database designed for high availability, effortless scale, and control over data placement.

A docker-powered PaaS that helps you build and manage the lifecycle of applications

:partly_sunny: The right way to check the weather

Connect your devices, users, and agents into a secure WireGuard®-based overlay network with SSO, MFA and granular access controls.

The Single Sign-On Multi-Factor portal for web apps. OpenID Certified™ and Post-Quantum Cryptography Ready.

🌩 Self-hosted file management and sharing system, supports multiple storage providers

OpenFaaS - Serverless Functions Made Simple

Complete container management platform

Lightweight server monitoring with historical data, docker stats, and alerts.

Fully autonomous AI Agents system capable of performing complex penetration testing tasks

A new AList Fork to Anti Trust Crisis

Dolt – Git for Data

Unified ingress for developers

🎧 Your Personal Streaming Service

High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.

Temporal service

SafeLine is a self-hosted WAF(Web Application Firewall) / reverse proxy to protect your web apps from attacks and exploits.

A self hosted virtual browser that runs in docker and uses WebRTC.

An open-source, AI-integrated, cross-platform terminal for seamless workflows

The easiest, and most secure way to access and protect all of your infrastructure.

Ready-to-use Media-over-QUIC / SRT / WebRTC / RTSP / RTMP / LL-HLS / MPEG-TS / RTP live media server and media proxy that allows to read, publish, proxy, record and playback real-time video and audio streams.

Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.

ZincSearch . A lightweight alternative to elasticsearch that requires minimal resources, written in Go.

VictoriaMetrics: fast, cost-effective monitoring solution and time series database

Internet-scale OpenID Certified™ OpenID Connect and OAuth2.1 provider that integrates with your user management through headless APIs. Solve OIDC/OAuth2 user cases over night. Consume as a service on Ory Network or self-host. Trusted by OpenAI and many others for scale and security. Written in Go.

Simple and easy to use DDNS. Support Aliyun, Tencent Cloud, Dnspod, Cloudflare, Callback, Huawei Cloud, Baidu Cloud, Porkbun, GoDaddy, Namecheap, NameSilo...

The container platform tailored for Kubernetes multi-cloud, datacenter, and edge management ⎈ 🖥 ☁️

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​.

IM Chat OpenClaw

Secure environments for developers and their agents

Web and API based SMTP testing

A simple server for sending and receiving messages in real-time per WebSocket. (Includes a sleek web-ui)

Open source AI coding agent. Designed for large projects and real world tasks.

BillionMail gives you open-source MailServer, NewsLetter, Email Marketing — fully self-hosted, dev-friendly, and free from monthly fees. Join the discord: https://discord.gg/asfXzBUhZr

A web client for its own Xray-based core with global transparent proxy on Linux, Windows and macOS.

Codespaces but open-source, client-only and unopinionated: Works with any IDE and lets you use any cloud, kubernetes or just localhost docker.

ZITADEL - Identity infrastructure, simplified for you.

An open-source graph database

CrowdSec - the open-source and participative security solution offering crowdsourced protection against malicious IPs and access to the most advanced real-world CTI.

:file_folder: Universal File Storage Client

Database governance built for humans and agents — controlling changes and access across every major database.

An open-source Agent-first Identity and Access Management (IAM) /LLM MCP & agent gateway and auth server with web UI supporting OpenClaw, MCP, OAuth, OIDC, SAML, CAS, LDAP, SCIM, WebAuthn, TOTP, MFA, Face ID, Google Workspace, Azure AD

JuiceFS is a distributed POSIX file system built on top of Redis and S3.

Open-Source Phishing Toolkit

Ultimate camera streaming application

Modern UI and powerful API for Ansible, Terraform/OpenTofu/Terragrunt, PowerShell and other DevOps tools.

Cross-platform backup tool for Windows, macOS & Linux with fast, incremental backups, client-side end-to-end encryption, compression and data deduplication. CLI and GUI included.

A lightweight, cryptography-powered, open-source toolkit built to enforce Zero Trust security for infrastructure, applications, and data in the AI-driven world.

Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, Social Sign In, OIDC, Magic Link, Multi-Factor Auth, SMS, SAML, TOTP, and more. Runs everywhere, runs best on Ory Network.

🏔 Love Freedom - ❌ Block Mass Surveillance

Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots

Scalable open-source game backend server: multiplayer, matchmaking, leaderboards, chat, and social features for games.

Nightingale is to monitoring and alerting what Grafana is to visualization.

An organizer for your porn, written in Go. Documentation: https://docs.stashapp.cc

Your AI trading terminal assistant for US stocks, commodities, forex, and crypto.

基于Gin + Vue + Element UI & Arco Design & Ant Design 的前后端分离权限管理系统脚手架（包含了：多租户的支持，基础用户管理功能，jwt鉴权，代码生成器，RBAC资源控制，表单构建，定时任务等）3分钟构建自己的中后台项目；项目文档》：https://www.go-admin.pro Demo： https://vue.go-admin.pro Antd PRO：https://antd.go-admin.pro

Full-featured and highly configurable SFTP, HTTP/S, FTP/S and WebDAV server - S3, Google Cloud Storage, Azure Blob

Cloud cost intelligence for engineers, AI coding agents, and CI/CD 💰📉 Shift FinOps Left!

Distributed web crawler admin platform for spiders management regardless of languages and frameworks. 分布式爬虫管理平台，支持任何语言和框架

Run and supervise teams of coding agents from planning to merge. Any harness (Claude code, codex, +25 more). Desktop, web, mobile, and cloud agents.

eBPF-powered network observability for Kubernetes. Indexes L4/L7 traffic with full K8s context, decrypts TLS without keys. Queryable by AI agents via MCP and humans via dashboard.

Netmaker makes networks with WireGuard. Netmaker automates fast, secure, and distributed virtual networks.

Kubescape is an open-source Kubernetes security platform for your IDE, CI/CD pipelines, and clusters. It includes risk analysis, security, compliance, and misconfiguration scanning, saving Kubernetes users and administrators precious time, effort, and resources.

Continuous Profiling Platform. Debug performance issues down to a single line of code

Take control over your live stream video by running it yourself. Streaming + chat out of the box.

vCluster creates tenant clusters: fully isolated environments delivered as managed Kubernetes, or as the foundation for Slurm, Ray, Run:ai and inference clusters. Each gets its own API server, CRDs and RBAC, and runs on an existing cluster or standalone on bare metal. CNCF Certified Kubernetes.

Talos Linux is a modern Linux distribution built for Kubernetes.

OpenID Connect (OIDC) identity and OAuth 2.0 provider with pluggable connectors

A truly Open Source MongoDB alternative

Open Source API and AI Gateway supporting REST, GraphQL, TCP, gRPC and MCP (Model Context Protocol)

screen sharing for developers https://screego.net/

Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics

Code AI platform with Code Search & Cody

live video streaming server in golang