68+ open-source tools, hand-reviewed

Discover the best open-source alternatives

Replace pricey, proprietary software with self-hostable open-source tools. Compare features, licenses, and GitHub activity — and cut your recurring costs.

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Curated tools: 68+
GitHub stars: 2.4M+
Categories: 16

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What the community loves

The open-source tools developers are starring and switching to right now.

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Open WebUI

Alternative to ChatGPT, Claude

A polished, self-hosted chat UI for any LLM.

Open SourceMIT98K

n8n

Alternative to Zapier, IFTTT

Workflow automation for technical teams.

Open SourceSource Available95K

Dify

Alternative to OpenAI Assistants

An LLMOps platform for building AI products.

Open SourceSource Available92K

Excalidraw

Alternative to Miro, Figma

Virtual whiteboard with a hand-drawn feel.

Open SourceMIT92K

Supabase

Alternative to Firebase, Auth0

The open-source Firebase alternative.

Open SourceApache 2.075K

Hoppscotch

Alternative to Postman

A fast, lightweight API development client.

Open SourceMIT70K

AppFlowy

Alternative to Notion, Confluence

The open-source Notion alternative, built in Rust.

Open SourceAGPL 3.064K

NocoDB

Alternative to Airtable

Turn any database into a smart spreadsheet.

Open SourceAGPL 3.053K

Browse by category

Find tools for every job

From design to deployment, explore open-source software organized the way you work.

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AI Chat Interfaces

Self-hosted chat front-ends for large language models — bring your own keys or run local models with full data control.

3 tools

AI Assistants

Personal AI copilots that search your knowledge, automate tasks, and run offline-first on your own hardware.

3 tools

AI Agent Platforms

Visual builders for LLM apps, RAG pipelines, and autonomous agents — the open-source backbone for AI products.

3 tools

AI Coding Assistants

Open-source coding agents, AI editors, and autocomplete tools — self-hostable alternatives to Claude Code, Copilot, and Cursor.

13 tools

Design & Prototyping

Collaborative design, whiteboarding, and prototyping tools that keep your files open and exportable.

3 tools

Notes & Knowledge

Local-first note apps, wikis, and knowledge bases with linking, databases, and end-to-end encryption.

6 tools

Productivity & Scheduling

Scheduling, calendaring, file sync, and task tools that replace subscription productivity suites.

3 tools

Project Management

Issue trackers, kanban boards, and agile suites for teams that want to own their roadmap data.

2 tools

Communication

Team chat, video conferencing, and community platforms you can self-host for privacy and control.

5 tools

No-Code & Databases

Airtable-style databases and internal tool builders that turn data into apps without a backend team.

4 tools

Workflow Automation

Node-based automation and integration platforms — connect apps and run workflows on your own terms.

3 tools

Web Analytics

Privacy-friendly, cookie-free analytics and product insight tools that keep visitor data yours.

4 tools

Developer Tools

API clients, search engines, observability, and monitoring stacks built for developers, by developers.

5 tools

Hosting & Deployment

Self-hosted PaaS and deployment platforms — a Heroku-like experience on infrastructure you control.

3 tools

CMS & E-commerce

Headless CMS, publishing, and commerce platforms that decouple content from presentation.

5 tools

Backend & BaaS

Open-source Firebase alternatives — auth, databases, storage, and APIs in a single self-hostable stack.

3 tools

Featured open-source tools

Standout projects we think are worth your attention — mature, well-maintained, and genuinely great.

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Open WebUI

Alternative to ChatGPT, Claude

A polished, self-hosted chat UI for any LLM.

Open SourceMIT98K

Dify

Alternative to OpenAI Assistants

An LLMOps platform for building AI products.

Open SourceSource Available92K

Penpot

Alternative to Figma, Sketch

The open-source design tool for design & code.

Open SourceMPL 2.038K

Excalidraw

Alternative to Miro, Figma

Virtual whiteboard with a hand-drawn feel.

Open SourceMIT92K

AppFlowy

Alternative to Notion, Confluence

The open-source Notion alternative, built in Rust.

Open SourceAGPL 3.064K

Cal.com

Alternative to Calendly

Open scheduling infrastructure for everyone.

Open SourceAGPL 3.036K

Ready to ditch the subscriptions?

Browse self-hostable open-source alternatives, compare them side by side, and take back control of your stack — and your budget.

Find an alternative Explore categories

Discover the best open-source alternatives

What the community loves

Find tools for every job

AI Chat Interfaces

AI Assistants

AI Agent Platforms

AI Coding Assistants

Design & Prototyping

Notes & Knowledge

Productivity & Scheduling

Project Management

Communication

No-Code & Databases

Workflow Automation

Web Analytics

Developer Tools

Hosting & Deployment

CMS & E-commerce

Backend & BaaS

Featured open-source tools

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