Open-source tools directory

Discover open-source tools worth using.

Browse self-hosted, privacy-friendly, free, and local-first software, then compare project details and repository signals.

Showing 30 of 697 Tools.

drawDB logo

drawDB

Free online database diagram editor with SQL generation. Create ER diagrams, visualize relationships, export scripts, and reverse engineer schemas - no signup required.

39,307
AGPL-3.0

Alternative to: Microsoft Visio

Mattermost logo

Mattermost

Mattermost provides a flexible, open-source platform for secure team collaboration, designed for organizations with strict security and privacy requirements.

38,939
Other

Alternative to: Microsoft Teams

Spacedrive logo

Spacedrive

A cross-platform file manager that unifies your devices into a seamless, organized digital workspace.

38,876
AGPL-3.0

Alternative to: Google Drive

ERPNext logo

ERPNext

Open-source ERP solution offering modules for accounting, inventory, HR, CRM, and more. Customizable and scalable for businesses of all sizes.

38,650
GPL-3.0

Alternative to: SAP

Umami logo

Umami

A lightweight, open-source alternative to Google Analytics that respects user privacy and provides valuable insights.

38,438
MIT

Alternative to: Google Analytics

Harness logo

Harness

Streamline code delivery with an open-source CI/CD platform featuring Git integration, fast pipelines, and hosted development environments.

38,169
Apache-2.0

Alternative to: GitHub

Open-Notebook logo

Open-Notebook

Open-source note-taking and research platform combining AI capabilities with complete privacy control. Features podcast generation, content integration, and customizable workflows.

37,911
MIT

Alternative to: NotebookLM

ToolJet logo

ToolJet

Open-source low-code platform for creating custom internal tools, dashboards, and admin panels with a drag-and-drop interface

37,849
AGPL-3.0

Alternative to: Retool

Directus logo

Directus

A versatile headless CMS and API engine that simplifies data management, content creation, and application development.

37,698
Other

Alternative to: WordPress

CopilotKit logo

CopilotKit

Integrate production-ready AI copilots into any product quickly and easily with CopilotKit's open-source platform.

37,107
MIT

Alternative to: LangChain

Khoj logo

Khoj

An open-source personal AI application that helps you find answers, understand documents, and create new content with ease.

36,788
AGPL-3.0

Alternative to: Claude

Nextcloud logo

Nextcloud

Nextcloud offers on-premises file sync, sharing and collaboration platform with advanced security and privacy features.

36,627
AGPL-3.0

Alternative to: Microsoft Teams

Keycloak logo

Keycloak

Comprehensive open source identity management solution offering single sign-on, social login, and fine-grained authorization for applications and services.

36,488
Apache-2.0

Alternative to: Auth0

LibreChat logo

LibreChat

Free, open source AI chat platform compatible with any AI provider. Offers a wide range of features, including agents, code interpreter, and multimodal capabilities.

36,397
MIT

Alternative to: Grok

Chatwoot logo

Chatwoot

An open-source customer engagement platform that unifies multiple channels, enabling businesses to provide seamless support and build lasting relationships.

36,297
Other

Alternative to: Manychat

HashiCorp Vault logo

HashiCorp Vault

HashiCorp Vault is a powerful tool for managing secrets, protecting sensitive data, and controlling access using identity-based security.

36,187
Other

Alternative to: 1Password

Medusa logo

Medusa

Flexible, customizable e-commerce platform with headless architecture, built-in features, and extensive plugin ecosystem for scalable online stores.

36,061
MIT

Alternative to: Shopify

Tailscale logo

Tailscale

Deploy a modern WireGuard-based VPN with zero configuration. Connect devices securely across clouds, VPCs, and on-premises networks without firewall rules.

35,777
BSD-3-Clause

Alternative to: Zerotier

Continue logo

Continue

Open-source AI code assistant that connects models and context to build custom autocomplete and chat experiences inside your IDE.

35,690
Apache-2.0

Alternative to: Claude Code

Refine logo

Refine

A React-based framework for rapid development of internal tools, admin panels, and dashboards with powerful data handling capabilities.

35,599
MIT

Alternative to: Retool

Postiz logo

Postiz

Postiz offers an all-in-one solution for scheduling posts, creating content, and analyzing performance across multiple social networks.

35,259
AGPL-3.0

Alternative to: HootSuite

1Panel logo

1Panel

Comprehensive web-based tool for Linux server administration with integrated website, database, container, and LLM management capabilities.

35,240
GPL-3.0

Alternative to: Plesk

Kitty logo

Kitty

High-performance terminal emulator with GPU acceleration, graphics support, and advanced scripting capabilities for developers and system administrators.

34,681
GPL-3.0

Alternative to: Warp

Lightpanda logo

Lightpanda

Purpose-built headless browser that delivers 10x faster performance and 10x lower memory usage compared to Chrome headless for web automation and AI workflows.

34,311
AGPL-3.0

Alternative to: Browserbase

Qdrant logo

Qdrant

Qdrant is an open-source vector database that provides high-performance similarity search for AI and machine learning applications.

34,260
Apache-2.0

Alternative to: Supabase

PostHog logo

PostHog

All-in-one product analytics platform. Track user behavior, run experiments, and make data-driven decisions to grow your product.

34,231
Other

Alternative to: Google Analytics

Langfuse logo

Langfuse

Langfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.

33,911
Other

Alternative to: LangSmith

Ntfy logo

Ntfy

A lightweight, open-source solution for sending real-time notifications to your devices, with end-to-end encryption and no sign-up required.

33,841
Apache-2.0

Alternative to: LogSnag

Pythagora logo

Pythagora

A VS Code extension that uses AI to help developers plan, write, test, and deploy full-stack web applications with minimal coding required.

33,776
Other

Alternative to: Lovable

CasaOS logo

CasaOS

CasaOS is an open-source personal cloud system that makes it easy to set up and manage your own home server

33,748
Apache-2.0

Alternative to: Umbrel