Find the right open source
for your project.
Discover open source projects by feature, technology, and category.
Popular searches
Browse Categories
View allAI & Machine Learning
29Open source machine learning frameworks, large language models and AI infrastructure.
Authentication & Security
10Open source authentication, identity and security tools.
Backend
16Backend platforms and backend-as-a-service tools for building applications.
Database
14Relational, document, vector and in-memory databases.
API
7Tools for building, exposing and managing APIs.
CMS
6Headless and traditional content management systems.
Chat & Messaging
2Team chat, messaging and real-time communication platforms.
Developer Tools
13Tools that help developers build, test and ship software.
UI & Components
3Component libraries and design systems for building interfaces.
Popular Open Source
Appwrite
BSD-3-ClauseOpen-source backend platform providing authentication, databases, storage, functions and realtime APIs, self-hosted or as a managed cloud service.
- Backend
- Database
- Authentication & Security
Flutter
BSD-3-ClauseGoogle's UI toolkit for building natively compiled applications for mobile, web and desktop from a single codebase.
- Mobile
Ghost
MITOpen source publishing and membership platform for blogs, newsletters and online publications.
- CMS
Gitea
MITLightweight, self-hosted Git service with issue tracking, pull requests and CI integration.
- Developer Tools
Grafana
AGPL-3.0Open source platform for monitoring and observability, letting you query, visualize and alert on metrics.
- Monitoring
Keycloak
Apache-2.0Open source identity and access management solution with single sign-on, OAuth2 and OpenID Connect support.
- Authentication & Security
Kubernetes
Apache-2.0Open source system for automating deployment, scaling and management of containerized applications.
- DevOps
LangChain
MITFramework for developing applications powered by large language models, agents and retrieval-augmented generation.
- AI & Machine Learning
Recently Added
Alluxio
Apache-2.0Data orchestration layer that sits between compute engines and storage systems, caching data for faster, unified access across the two.
- Storage
Apache APISIX
Apache-2.0Dynamic, high-performance API gateway built on NGINX and etcd, adding hot-reloaded plugins, canary releases, and AI-traffic routing on top of traditional gateway features.
- API
Apache Kafka
Apache-2.0Distributed event streaming platform that stores data as a durable, replayable log, built for high-throughput real-time pipelines rather than traditional point-to-point queuing.
- Backend
Apache RocketMQ
Apache-2.0Distributed messaging and streaming platform built for financial-grade transactional reliability at very high throughput.
- Backend
Argo CD
Apache-2.0The leading GitOps continuous delivery tool for Kubernetes, automatically syncing your cluster state to match what's defined in git.
- DevOps
Argo Events
Apache-2.0Event-driven automation framework for Kubernetes that triggers workflows, functions, or other actions in response to events from any source.
- Automation
Found FindOpenSource useful?
Support the project on GitHub Sponsors and help us keep improving open-source discovery.
Support FindOpenSource