Top Open Source Projects using Go
A curated collection of the 132 best free and open-source projects built using Go. Discover popular repositories, architecture patterns, and trending software in 2026.
Zitadel
AGPL-3.0ZITADEL provides a comprehensive identity management solution with easy APIs, customizable workflows, and serverless deployment options.
WaveTerm
Apache-2.0Enhance your terminal with AI, file previews, and web browsing. Available on MacOS, Linux, and Windows.
Chroma
Apache-2.0Open-source vector database designed for AI applications. Store, search, and retrieve embeddings with semantic similarity matching and metadata filtering.
UnKey
NOASSERTIONStreamline API authentication with UnKey's powerful, developer-friendly platform for creating, revoking, and monitoring API keys.
Storyden
MPL-2.0Create permanent, discoverable communities with modern forum features. Combines discussion, curation, and wiki functionality in one platform.
Stormkit
NOASSERTIONSelf-hosted platform for web applications offering automated CI/CD pipelines, multiple environments, and Git integration - with 47% infrastructure cost savings.
Openlane
Apache-2.0Automates evidence collection, control tracking, and audit reporting across SOC 2, ISO 27001, NIST 800-53, GDPR, and 12+ other frameworks in one platform.
Prisme Analytics
AGPL-3.0Prisme offers customizable, GDPR-compliant web analytics with real-time insights, unlimited data retention, and bot filtering.
Navidrome
GPL-3.0Open source music server that streams your personal library via a web player or any Subsonic-compatible mobile app on iOS and Android.
NetData
GPL-3.0Powerful, efficient, and user-friendly monitoring solution for servers, containers, and applications with instant insights and alerts.
Notifuse
AGPL-3.0Free open-source email platform for newsletters and transactional emails. Self-hosted alternative to Mailchimp with visual MJML editor, A/B testing, and analytics.
Inngest
NOASSERTIONSimplify backend processes with event-driven functions, seamless integrations, and powerful debugging tools for developers.
Krakend
Apache-2.0High-performance, stateless API gateway built for microservices. Handle 80K+ requests/second with transparent pricing and enterprise-grade reliability.
HelixDB
Apache-2.0Rust-built native graph-vector database combining vector similarity search and graph traversals. 10x faster development with unified architecture, sub-1ms queries.
Harness
Apache-2.0Streamline code delivery with an open-source CI/CD platform featuring Git integration, fast pipelines, and hosted development environments.
Flipt
NOASSERTIONA feature flag platform that integrates with Git workflows, enabling developers to manage features directly in their codebase.
Formance
NOASSERTIONBuild custom financial flows and integrate with any provider using Formance's agnostic platform
Bifrost
Apache-2.0Open-source AI gateway delivering 50x faster performance than alternatives. Access 1000+ models from 8+ providers with built-in governance, fallback, and observability.
Lago
AGPL-3.0Open-source billing system that handles metering, usage-based pricing, and invoicing at scale. Perfect for AI, cloud, and API companies needing flexible monetization.
Filestash
AGPL-3.0Filestash is an open-source file manager that integrates with multiple storage backends, authentication systems, and offers customization options.
CloudQuery
MPL-2.0CloudQuery is an open-source ELT platform that enables easy data integration from hundreds of cloud and security tools to any destination.
Cerbos
Apache-2.0A scalable authorization layer that provides fine-grained access control through externalized policies, enabling secure and flexible permissions management.
Beam
AGPL-3.0Run GPU inference, task queues, and sandboxes on serverless infrastructure with sub-second cold starts, autoscaling, and support for your own AWS, GCP, or bare metal.
Authgear
Apache-2.0Authgear is a managed IAM platform handling authentication, SSO, and user management for B2C and B2B apps, with biometrics, MFA, and zero-trust support.
Billion Mail
AGPL-3.0Self-hosted email marketing platform with unlimited sending, AI-powered email creation, real-time analytics, and no monthly fees. Complete SMTP solution.
WunderGraph
Apache-2.0A powerful backend framework that simplifies API integration, enhances security, and boosts developer productivity for modern web applications.
Woodpecker CI
Apache-2.0Open-source CI/CD platform using Docker containers for pipeline execution. Create multiple workflows, extend with plugins, and enjoy free lifetime access.
Windshift
AGPL-3.0Self-hosted, open-source project management tool with boards, milestones, portals, time tracking, and test management on your own infrastructure.
Werbot
NOASSERTIONCentralized platform for managing SSH access, enhancing security, and streamlining server administration for DevOps teams.
Weaviate
BSD-3-ClauseOpen-source vector database designed for building powerful, production-ready AI applications with hybrid search capabilities and flexible deployment options.
Wakapi
MITOpen-source, self-hosted time tracking solution for developers. Analyze coding habits, improve productivity, and visualize progress.
Wachd
NOASSERTIONReceive alerts from Grafana, Datadog, and Prometheus with AI-generated root cause analysis. Self-hosted on Kubernetes, fully air-gapped capable, Apache 2.0 licensed.
Vikunja
AGPL-3.0A powerful, open-source task management platform for teams and individuals, offering customizable workflows and seamless integration.
VictoriaMetrics
Apache-2.0Time series database and monitoring platform compatible with Prometheus, handling billions of metrics with lower resource usage than most alternatives.
Memos
MITMemos is a self-hosted, open-source note-taking app built around a private timeline. Write in Markdown, skip the folder setup, and keep your data on your own server.
Uptrace
AGPL-3.0Uptrace is an OpenTelemetry-based platform that integrates traces, metrics, and logs to help monitor and optimize complex distributed systems.
Tyk
NOASSERTIONFast, scalable API management platform with open source gateway, analytics, dev portal and dashboard. Deploy anywhere with AI-ready governance and security.
Temporal
MITOpen source platform that eliminates infrastructure complexity by handling failures, network issues, and long-running processes to ensure reliable workflow execution
TiDB
Apache-2.0Distributed SQL database combining OLTP and OLAP capabilities, offering horizontal scalability, high availability, and real-time analytics.
Hive
MITA fully open-source schema registry, analytics, and gateway for GraphQL federation and APIs
TDengine
AGPL-3.0High-performance time-series database with industrial data management, built-in stream analytics, and AI-driven anomaly detection for operational environments.
Tailscale
BSD-3-ClauseDeploy a modern WireGuard-based VPN with zero configuration. Connect devices securely across clouds, VPCs, and on-premises networks without firewall rules.
Kitty
GPL-3.0High-performance terminal emulator with GPU acceleration, graphics support, and advanced scripting capabilities for developers and system administrators.
Storj
AGPL-3.0Storj offers a distributed cloud storage platform with enhanced security, global performance, and significant cost savings compared to traditional providers.
Statusnook
MITA powerful open-source status page system for real-time incident tracking, maintenance updates, and transparent communication with users.
SlateDB
Apache-2.0SlateDB is an embedded storage engine that leverages object storage for durability, scalability, and simplified replication without the need for disk management.
SigNoz
NOASSERTIONComprehensive monitoring and troubleshooting solution for microservices architectures, offering metrics, traces, and logs in a single pane.
ShipShipShip
Apache-2.0Self-hostable changelog and roadmap platform with community voting, automated newsletters, and kanban boards. Deploy with Docker in minutes.
Sequin
MITSequin offers a feature-rich messaging system with a simple HTTP API, providing RabbitMQ-like functionality without adding complexity to your stack.
Semaphore
NOASSERTIONContinuous integration and delivery platform offering faster builds, lower costs, and maintenance-free operations. Cut build times dramatically while reducing CI/CD expenses by 50%.
Hyvor Relay
AGPL-3.0Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.
Pulumi
Apache-2.0Pulumi enables developers to define and manage cloud infrastructure using familiar programming languages instead of domain-specific languages.
Probo
MITCompliance management platform where dedicated compliance officers handle your entire program, from risk assessments to audit coordination, with automated evidence collection.
ProjectDiscovery
MITMonitor infrastructure for exploitable vulnerabilities with real-time detection, automated workflows, and zero false positives.
Prometheus
Apache-2.0Pull-based monitoring system with a multi-dimensional data model, PromQL query language, built-in alerting, and a time series database built for cloud native environments.
Private Captcha
NOASSERTIONPrivacy-first CAPTCHA service that blocks bots while keeping forms accessible. No puzzles, no tracking, no cookies - just invisible cryptographic protection.
PocketBase
MITA lightweight, self-hosted backend solution with real-time database, authentication, and file storage capabilities.
Plakar
ISCBackup solution with CLI, API and UI interfaces. Clean defaults, easy deployment. Encrypted, queryable backups with deduplication and compression.
Permify
AGPL-3.0Open-source authorization service for implementing fine-grained access controls. Centralized, scalable solution supporting RBAC, ABAC and ReBAC with Google Zanzibar-inspired architecture.
Peekaping
MITOpen-source uptime monitoring solution with real-time alerts, status pages, and comprehensive checks for websites, APIs, databases, and services.
Pangolin
NOASSERTIONDeploy zero trust access to infrastructure, self-hosted apps, and SaaS tools in days. Identity-aware security with seamless user experience.
Ory
Apache-2.0Ory is a certified and battle-tested identity solution backed by a large open source community and trusted by Fortune 500 companies.
OpenTofu
MPL-2.0A community-driven, truly open-source fork of Terraform for managing cloud infrastructure through code.
OpenSERP
MITQuery Google, Bing, Yandex, Baidu, DuckDuckGo, and Ecosia through one REST API. Self-host free under MIT, or use the managed cloud option.
OpenStatus
AGPL-3.0Open-source status page and uptime monitor that tracks endpoints from 28 global regions, communicates incidents, and helps satisfy SOC 2 audit requirements.
OpenReplay
NOASSERTIONOpen-source session replay and product analytics platform you can self-host for complete control over data security, privacy, and compliance.
OpenMeter
Apache-2.0Open source billing platform that turns events into revenue with real-time metering, usage limits, and flexible pricing. Integrates with Stripe, CRMs, and payment providers.
OpenPanel
NOASSERTIONA user-friendly, open-source control panel for effortless server administration, designed for both beginners and experts.
OpenLIT
Apache-2.0Open-source observability platform for GenAI and LLM applications. Real-time monitoring, distributed tracing, prompt management, and AI model evaluation built on OpenTelemetry.
OpenComputer
Apache-2.0Provides always-on virtual machines for AI agents with full OS access, persistent state, elastic CPU/memory resizing, and instant checkpoints.
OpenCloud
Apache-2.0Self-hostable cloud file management and collaboration platform with an integrated office suite, zero-trust security, and GDPR compliance for teams and organizations.
Onyx
NOASSERTIONAn open-source platform that connects to 40+ apps to provide intelligent search and AI assistance across all company information
Ollama
MITRuns open-source language models locally with a simple setup, plus optional cloud access for larger models when local hardware isn't enough.
Ntfy
Apache-2.0A lightweight, open-source solution for sending real-time notifications to your devices, with end-to-end encryption and no sign-up required.
Nitric
Apache-2.0Nitric automates cloud infrastructure provisioning from your application code for AWS, GCP and Azure
Netbird
NOASSERTIONOpen source platform combining WireGuard overlay networks with Zero Trust access controls. Features SSO, MFA, device posture checks, and granular policies for secure remote connectivity.
Monetr
NOASSERTIONManage your money confidently with monetr, putting aside what you need and spending what you want
Spinifex
AGPL-3.0Spinifex recreates EC2, S3, EBS, VPC, IAM, and more on your own hardware, so AWS-built software runs unchanged without touching a hyperscaler.
Mole
GPL-3.0Native macOS app that cleans caches, uninstalls apps with leftovers, maps disk usage, and shows live system metrics. One-time purchase, lifetime updates.
Multica
NOASSERTIONOpen-source platform that manages coding agents as team members, with task queues, skill libraries, runtime monitoring, and a unified activity feed.
Milvus
Apache-2.0Open-source vector database optimized for similarity search, scaling to billions of vectors with minimal performance loss
MinIO
AGPL-3.0Open source S3-compatible object storage optimized for cloud-native and AI applications, delivering unmatched performance and scalability
Mattermost
NOASSERTIONMattermost provides a flexible, open-source platform for secure team collaboration, designed for organizations with strict security and privacy requirements.
LocalAI
MITRun LLMs, speech, image generation, and autonomous agents on your own hardware with an OpenAI-compatible API and 60+ swappable backends.
LiveKit
Apache-2.0Build, test, deploy, and scale voice and video AI agents with an open source framework, inference gateway, telephony integrations, and full observability.
Listmonk
AGPL-3.0Send email campaigns and transactional messages to millions of subscribers with a single high-performance binary backed by Postgres.
LibreChat
MITChat with multiple AI providers through a single self-hostable interface, with support for custom agents, file uploads, plugins, and multi-user access control.
LangWatch
Apache-2.0Tests AI agents through multi-turn simulations, LLM-based scoring, and production tracing so teams can ship reliable agents with confidence.
JumpServer
GPL-3.0Open-source privileged access management solution offering secure, browser-based access to SSH, RDP, Kubernetes, databases and remote applications.
Jitsu
MITCollect, transform, and sync data across your entire infrastructure with a flexible, code-based approach to data integration.
Zen
AGPL-3.0Minimal note-taking app storing Markdown notes in local SQLite database. Features instant search, flexible tagging, keyboard shortcuts, and offline access.
Infisical
NOASSERTIONEnd-to-end encrypted secret management platform for seamless integration and enhanced security in development workflows.
HitKeep
MITSelf-hosted or managed web analytics with zero external dependencies. Cookie-free tracking, full data sovereignty, and single binary deployment for organizations that own their data.
Highlight
NOASSERTIONComprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.
Hanko
NOASSERTIONOpen source authentication platform supporting passkeys, 2FA, SSO, and social login. Self-host or use Hanko Cloud, with full control over your data and no lock-in.
Hatchet
MITDurable orchestration platform for managing AI agents, scheduling background tasks, and running mission-critical workflows.
Grafana
AGPL-3.0Grafana unifies metrics, logs, traces, profiles, and business data into one OpenTelemetry-native platform with AI-assisted root cause analysis and adaptive cost controls.
Gogs
MITLightweight, cross-platform Git service for self-hosting. Easy installation, minimal requirements, runs on Raspberry Pi. 100% open source and free.
Gitea
MITA lightweight, fast, and customizable Git service that simplifies code hosting and collaboration for teams of all sizes.
Gigapipe
AGPL-3.0Unified platform for logs, metrics, traces and profiles with native compatibility for popular tools like OpenTelemetry, Prometheus, and Loki. No data silos, no usage limits.
Gatus
Apache-2.0A highly customizable monitoring solution that provides automated status pages, extensive alerting options, and detailed testing capabilities for your services and infrastructure
Friendly Captcha
MPL-2.0Privacy-compliant CAPTCHA alternative using proof-of-work technology. Protects websites from bots and spam without user interaction or data tracking.
Flexprice
AGPL-3.0A flexible billing platform that handles usage-based metering, credit management, and subscription billing, giving developers full control over pricing models.
Fider
AGPL-3.0A self-hosted community feedback tool that helps organizations gather, discuss, and prioritize user suggestions and feature requests.
ezBookkeeping
MITA privacy-first personal finance app with two-level accounts, multi-currency support, AI receipt recognition, and broad data import from formats like GnuCash and Firefly III.
Bacalhau
Apache-2.0Bacalhau is an open-source platform for fast, cost-effective, and secure distributed computing, seamlessly integrating with Docker and WebAssembly workflows.
Ente
AGPL-3.0End-to-end encrypted cloud storage for photos and videos, offering privacy, security, and seamless cross-device syncing.
EasyMonitor
MITDeploy your own uptime and performance monitoring with HTTP/ICMP checks, multi-region probes, and custom status pages. MIT licensed, runs on minimal hardware.
Encore
MPL-2.0A powerful platform for building cloud backends, automating infrastructure, and simplifying development workflows for faster, more efficient coding.
dstack
MPL-2.0Unified control plane for AI compute that provisions and schedules GPU workloads across any cloud, Kubernetes cluster, or bare-metal server.
Dyrector
Apache-2.0Effortless container orchestration platform for seamless deployment, management, and monitoring of applications across multiple environments.
Dokku
MITA Docker-powered platform that lets you deploy Heroku-compatible applications via Git, with buildpack support and container isolation.
Dokploy
NOASSERTIONStreamline your deployment process with Dokploy. Manage applications and databases on any VPS using Docker and Traefik for improved performance and security.
Donetick
AGPL-3.0Organize tasks and chores with intelligent scheduling, fair assignment, and collaboration features. Perfect for families and teams with smart notifications.
Dify
NOASSERTIONVisual platform for building agentic workflows, RAG pipelines, and LLM-powered apps. Supports hundreds of models, MCP integration, and self-hosted deployment.
HashiCorp Vault
NOASSERTIONManages tokens, passwords, certificates, and encryption keys through a UI, CLI, or HTTP API, with dynamic credentials and encryption-as-a-service built in.
Digger
MITOpen-source CI/CD orchestrator for Terraform with pull request automation, drift detection, and enterprise-grade security. Self-hostable with private runners.
Cozy
AGPL-3.0Open-source personal cloud that automatically gathers all your data from third-party services. French-hosted with privacy-first design, no ads, and seamless device sync.
Coroot
Apache-2.0Coroot simplifies system monitoring by providing metrics, logs, traces, and profiling with zero instrumentation, leveraging eBPF technology.
Cosmos Server
NOASSERTIONComplete self-hosting solution with automated maintenance, Smart-Shield protection, anti-DDoS, SSO authentication, and VPN access for secure private cloud management.
Cozystack
Apache-2.0Transform bare metal servers into a complete cloud platform with REST API for Kubernetes clusters, databases, VMs, and load balancers. Build your own cloud.
Coder
AGPL-3.0Self-hosted development platform that enables secure, scalable remote coding with automated provisioning, reduced cloud costs, and enterprise-grade security.
CasaOS
Apache-2.0CasaOS is an open-source personal cloud system that makes it easy to set up and manage your own home server
Bytebase
NOASSERTIONComprehensive platform for database schema migrations, security controls, and data masking with built-in review workflows and GitOps integration.
Bluesky
MITA decentralized social network focused on fostering meaningful interactions and giving users control over their data and experience.
SiYuan
AGPL-3.0Personal knowledge management system with WYSIWYG block editing, bidirectional links, spaced repetition flashcards, a relational database, and end-to-end encrypted sync.
AnyType
NOASSERTIONA local-first, encrypted workspace for notes, tasks, databases, and chats. Your data stays on your device, syncs peer-to-peer, and never passes through a central server.
Apache Answer
Apache-2.0A versatile, community-driven Q&A platform that fosters collaboration and knowledge exchange within organizations and communities.
Envoy AI Gateway
Apache-2.0Open source gateway built on Envoy for routing application traffic to GenAI services. Supports 16+ LLM providers including OpenAI, Anthropic, AWS Bedrock.
1Panel
GPL-3.0Modern open-source Linux server management panel with AI and app deployment capabilities
NHost
MITFully managed backend infrastructure with built-in authentication, database, storage, and serverless functions for rapid application development.
Fathom Lite
MITA simple, privacy-first analytics platform that provides valuable website insights without compromising visitor data or requiring cookie consent banners.
