Open Source Alternatives to Popular Software

Over 1 million users replaced their proprietary tools with open source software. Discover the best alternatives and join the movement.

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Novu

Multi-channel notification infrastructure for apps

Stars
39,119
Forks
4,320
Last commit
1 day ago

Open-source platform for building in-app, email, push, SMS, and chat notifications with a unified API, workflow engine, and embeddable inbox component.

Open Source Alternative to:

Customer.io

Postiz

Schedule and manage social media across 30+ networks

Stars
31,895
Forks
5,887
Last commit
2 days ago

Open-source social media scheduling tool that plans, generates, and publishes posts across 30+ networks with AI assistance, analytics, and team collaboration.

Open Source Alternative to:

HootSuite

Dub Partners

Affiliate marketing platform built for SaaS companies

Stars
23,689
Forks
3,042
Last commit
2 days ago

Run affiliate, influencer, and referral programs with flexible reward structures, real-time attribution, and automated global payouts.

Open Source Alternative to:

Affonso

Cap

Open source screen recorder with editing and instant sharing

Stars
19,579
Forks
1,614
Last commit
1 day ago

Record your screen or webcam, edit with backgrounds and effects, then share via link. Built on Rust and Tauri for native performance on macOS and Windows.

Open Source Alternative to:

Screen Studio

Parlant

Structured control layer for customer-facing AI agents

Stars
18,112
Forks
1,535
Last commit
2 days ago

A conversational AI server that manages agent behavior through context-aware guidelines, keeping responses consistent, auditable, and aligned at scale.

Open Source Alternative to:

Voiceflow

Hanko

Passkeys, SSO, and MFA without vendor lock-in

Stars
8,950
Forks
1,013
Last commit
21 hours ago

Open 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.

Open Source Alternative to:

Clerk

OpenPanel

Cookie-free web and product analytics, self-hostable

Stars
5,928
Forks
382
Last commit
1 day ago

Open-source analytics platform covering web traffic, custom events, funnels, retention, session replay, and revenue tracking. GDPR-compliant with optional self-hosting.

Open Source Alternative to:

Google Analytics

Baserow

No-code database and app builder you can self-host

Stars
5,046
Forks
630
Last commit
2 days ago

Open-source platform for building databases, internal apps, and automated workflows without writing code. Available on cloud or self-hosted.

Open Source Alternative to:

Airtable

Tolgee

Open-source localization platform for multilingual apps

Stars
3,972
Forks
358
Last commit
1 day ago

Manage app translations with in-context editing, AI translation, and collaborative tools. Self-hostable and free to start.

Open Source Alternative to:

Crowdin

Open Mercato

AI-native CRM/ERP foundation with 80% already built

Stars
1,391
Forks
295
Last commit
22 hours ago

A modular CRM/ERP framework built on Next.js and TypeScript that encodes hundreds of architectural decisions so dev teams can ship production features in days, not months.

Open Source Alternative to:

SAP

Probo

Managed compliance for SOC 2, ISO 27001, HIPAA, and more

Stars
1,159
Forks
169
Last commit
1 day ago

Compliance management platform where dedicated compliance officers handle your entire program, from risk assessments to audit coordination, with automated evidence collection.

Open Source Alternative to:

Vanta

Openlane

Continuous compliance automation for SOC 2, ISO 27001 & more

Stars
261
Forks
46
Last commit
16 hours ago

Automates evidence collection, control tracking, and audit reporting across SOC 2, ISO 27001, NIST 800-53, GDPR, and 12+ other frameworks in one platform.

Open Source Alternative to:

Vanta

AgentMail

Email inbox API built for AI agents and workflows

Stars
35
Forks
15
Last commit
2 days ago

Provides AI agents with real email inboxes via REST API. Create inboxes instantly, send and receive messages, search threads, and handle attachments programmatically.

OpenClaw

An AI assistant that acts, not just answers

Stars
378,602
Forks
79,181
Last commit
11 hours ago

A personal AI assistant that connects to your existing chat apps and handles real tasks like email, calendar, and flight check-ins on your behalf.

Open Source Alternative to:

Zo Computer

n8n

Visual workflow automation with code flexibility and AI agents

Stars
192,423
Forks
58,523
Last commit
16 hours ago

Build automated workflows connecting 500+ apps, write custom code, and deploy AI agents with full visibility into every decision. Self-hostable or cloud.

Open Source Alternative to:

Make

OpenCode

AI coding agent for terminal, IDE, and desktop

Stars
174,122
Forks
21,018
Last commit
11 hours ago

Open source AI coding agent that works in your terminal, IDE, or desktop app, supporting 75+ LLM providers with no code storage.

Open Source Alternative to:

Claude Code

Open WebUI

One interface for every AI model you run or connect

Stars
141,421
Forks
20,320
Last commit
1 day ago

Self-hosted AI platform that connects local and cloud models, extends with Python, and keeps your data under your control.

Open Source Alternative to:

Claude

Dify

Build and deploy AI agents and RAG pipelines visually

Stars
145,104
Forks
22,839
Last commit
11 hours ago

Visual platform for building agentic workflows, RAG pipelines, and LLM-powered apps. Supports hundreds of models, MCP integration, and self-hosted deployment.

Open Source Alternative to:

Glide

Langflow

Visual builder for AI agents and RAG pipelines

Stars
149,633
Forks
9,262
Last commit
15 hours ago

Build, deploy, and iterate on AI agents, RAG applications, and MCP servers using a drag-and-drop visual interface backed by Python.

Open Source Alternative to:

Voiceflow

Firecrawl

Turn any website into clean, AI-ready data via API

Stars
132,455
Forks
7,788
Last commit
17 hours ago

API for AI agents to search, scrape, crawl, and interact with the live web, returning clean Markdown, structured JSON, or screenshots from any page.

Open Source Alternative to:

Browserbase

Excalidraw

Collaborative whiteboard with a hand-drawn aesthetic

Stars
125,272
Forks
14,006
Last commit
19 hours ago

Virtual whiteboard for sketching diagrams, flowcharts, and wireframes with a distinctive hand-drawn look. Real-time collaboration built in.

Open Source Alternative to:

Microsoft Visio

Browser Use

Let AI agents control any browser, at scale

Stars
98,716
Forks
11,014
Last commit
19 hours ago

Python library that lets AI agents browse the web by giving them real browser control, DOM access, and the ability to interact with any website.

Open Source Alternative to:

Browserbase

RustDesk

Self-hosted remote desktop you fully control

Stars
116,113
Forks
17,561
Last commit
11 hours ago

Cross-platform remote desktop software that runs on your own servers, giving you full data control as a direct alternative to TeamViewer and AnyDesk.

Open Source Alternative to:

AnyDesk

Godot

Free 2D and 3D game engine for cross-platform projects

Stars
112,493
Forks
25,643
Last commit
2 days ago

Build 2D, 3D, and XR games with a full-featured engine that includes its own scripting language, scene editor, and export tools for multiple platforms.

Open Source Alternative to:

Unreal Engine

Supabase

Postgres-powered backend platform for production apps

Stars
104,162
Forks
12,724
Last commit
15 hours ago

Provides a full backend stack built on Postgres: authentication, auto-generated APIs, edge functions, realtime subscriptions, file storage, and vector search.

Open Source Alternative to:

Firebase

Immich

Self-hosted photo and video backup for your own server

Stars
103,274
Forks
5,844
Last commit
11 hours ago

Back up, organize, search, and browse your personal photo and video library on your own server, with no third-party cloud access.

Open Source Alternative to:

Google Photos

Home Assistant

Local control smart home automation with privacy first

Stars
87,711
Forks
37,669
Last commit
13 hours ago

Open source home automation platform supporting 1000+ devices with local control, powerful automations, custom dashboards, and voice assistant. No cloud required.

Open Source Alternative to:

Amazon Alexa

LobeChat

Manage, build, and run AI agent teams around the clock

Stars
78,625
Forks
15,417
Last commit
11 hours ago

A collaborative platform to create, schedule, and operate AI agents that handle long-running tasks, team workflows, and automated jobs without constant oversight.

Open Source Alternative to:

Claude

Uptime Kuma

Self-hosted uptime monitoring with a clean dashboard

Stars
87,982
Forks
7,987
Last commit
16 hours ago

Monitors websites, APIs, and services with real-time alerts, a status page, and support for dozens of notification channels. Self-hosted and Docker-friendly.

Open Source Alternative to:

Opsgenie

OpenHands

Autonomous coding agents that complete real engineering tasks

Stars
76,941
Forks
9,772
Last commit
12 hours ago

AI agent platform that runs autonomous coding agents to plan, write, and ship changes across codebases end-to-end, with support for any model and self-hosted deployment.

Open Source Alternative to:

Claude Code

Zed

High-performance code editor built for speed and AI

Stars
85,204
Forks
9,069
Last commit
16 hours ago

A Rust-built code editor from the creators of Atom and Tree-sitter, combining native performance with multiplayer collaboration and deep AI integration.

Open Source Alternative to:

Claude Code

LocalSend

Share files securely across all devices without servers

Stars
83,292
Forks
4,528
Last commit
9 days ago

Free, open-source file sharing tool for nearby devices. Cross-platform support with end-to-end encryption, no registration required, automatic device discovery.

Open Source Alternative to:

Apple AirDrop

pi

Minimal terminal coding agent you can fully customize

Stars
62,391
Forks
7,557
Last commit
11 hours ago

Terminal-based coding agent with a minimal core, 15+ LLM providers, tree-structured session history, and a TypeScript extension system for building your own workflows.

Open Source Alternative to:

Claude Code

Daytona

Isolated sandboxes for executing AI-generated code safely

Stars
72,435
Forks
5,611
Last commit
2 days ago

Elastic sandbox infrastructure for running AI-generated code with sub-90ms environment creation, stateful operations, and isolated execution across Python, TypeScript, Go, and more.

Open Source Alternative to:

Together Sandbox

Mermaid

Create diagrams and flowcharts with simple markdown syntax

Stars
88,635
Forks
9,039
Last commit
11 hours ago

Generate flowcharts, sequence diagrams, and visualizations using intuitive markdown-like syntax without design skills.

Open Source Alternative to:

Microsoft Visio

Crawl4AI

LLM-ready web crawler built for AI data pipelines

Stars
68,436
Forks
6,989
Last commit
10 days ago

Open-source web crawler and scraper that produces clean, structured output optimized for LLMs, RAG pipelines, and AI agents. Supports async crawling, CSS/XPath/LLM extraction, and stealth browser control.

Open Source Alternative to:

Browserbase

Cline

Open-source AI coding agent for your editor and terminal

Stars
63,234
Forks
6,677
Last commit
14 hours ago

AI coding agent that runs inside VS Code and the terminal, supporting multi-file edits, bash execution, and any LLM provider via bring-your-own-key.

Open Source Alternative to:

Claude Code

Elasticsearch

The leading distributed search and analytics engine

Stars
76,971
Forks
25,843
Last commit
12 hours ago

Elasticsearch is an open-source, RESTful search engine designed for scalability, reliability, and easy management.

Open Source Alternative to:

Algolia

Flowise AI

Visual builder for AI agents and LLM workflows

Stars
53,553
Forks
24,510
Last commit
4 days ago

Open source platform for building AI agents, chatbots, and multi-agent systems using a drag-and-drop interface, with support for 100+ LLMs and RAG.

Open Source Alternative to:

n8n

Hoppscotch

Sleek, intuitive API development and testing platform

Stars
79,520
Forks
5,915
Last commit
3 days ago

Lightweight, fast, and feature-rich API client for developers. Test, debug, and document APIs with ease in a clean, modern interface.

Open Source Alternative to:

Postman

Apache Superset

Self-serve data exploration and dashboard builder

Stars
73,281
Forks
17,607
Last commit
11 hours ago

Connect any SQL database, build charts with drag-and-drop or raw SQL, and publish interactive dashboards without writing application code.

Open Source Alternative to:

Power BI

OpenCut

Open source video editor that runs in your browser

Stars
55,646
Forks
6,064
Last commit
18 days ago

Browser-based, open source video editor built for privacy. No installs, no account required, works on any platform.

Open Source Alternative to:

CapCut

Logto

Modern auth infrastructure for developers.

Visit Logto

Sevalla

Deploy your app before your coffee gets cold. It’s that easy. Try Sevalla with $50 free credit.

Visit Sevalla

Logto

Modern auth infrastructure for developers.

Visit Logto

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Last commit

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People are looking for alternatives to...

Novu

Multi-channel notification infrastructure for apps

Stars
39,119
Forks
4,320
Last commit
1 day ago

Open-source platform for building in-app, email, push, SMS, and chat notifications with a unified API, workflow engine, and embeddable inbox component.

Open Source Alternative to:

Customer.io

Postiz

Schedule and manage social media across 30+ networks

Stars
31,895
Forks
5,887
Last commit
2 days ago

Open-source social media scheduling tool that plans, generates, and publishes posts across 30+ networks with AI assistance, analytics, and team collaboration.

Open Source Alternative to:

HootSuite

Dub Partners

Affiliate marketing platform built for SaaS companies

Stars
23,689
Forks
3,042
Last commit
2 days ago

Run affiliate, influencer, and referral programs with flexible reward structures, real-time attribution, and automated global payouts.

Open Source Alternative to:

Affonso

Cap

Open source screen recorder with editing and instant sharing

Stars
19,579
Forks
1,614
Last commit
1 day ago

Record your screen or webcam, edit with backgrounds and effects, then share via link. Built on Rust and Tauri for native performance on macOS and Windows.

Open Source Alternative to:

Screen Studio

Parlant

Structured control layer for customer-facing AI agents

Stars
18,112
Forks
1,535
Last commit
2 days ago

A conversational AI server that manages agent behavior through context-aware guidelines, keeping responses consistent, auditable, and aligned at scale.

Open Source Alternative to:

Voiceflow

Hanko

Passkeys, SSO, and MFA without vendor lock-in

Stars
8,950
Forks
1,013
Last commit
21 hours ago

Open 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.

Open Source Alternative to:

Clerk

OpenPanel

Cookie-free web and product analytics, self-hostable

Stars
5,928
Forks
382
Last commit
1 day ago

Open-source analytics platform covering web traffic, custom events, funnels, retention, session replay, and revenue tracking. GDPR-compliant with optional self-hosting.

Open Source Alternative to:

Google Analytics

Baserow

No-code database and app builder you can self-host

Stars
5,046
Forks
630
Last commit
2 days ago

Open-source platform for building databases, internal apps, and automated workflows without writing code. Available on cloud or self-hosted.

Open Source Alternative to:

Airtable

Tolgee

Open-source localization platform for multilingual apps

Stars
3,972
Forks
358
Last commit
1 day ago

Manage app translations with in-context editing, AI translation, and collaborative tools. Self-hostable and free to start.

Open Source Alternative to:

Crowdin

Open Mercato

AI-native CRM/ERP foundation with 80% already built

Stars
1,391
Forks
295
Last commit
22 hours ago

A modular CRM/ERP framework built on Next.js and TypeScript that encodes hundreds of architectural decisions so dev teams can ship production features in days, not months.

Open Source Alternative to:

SAP

Probo

Managed compliance for SOC 2, ISO 27001, HIPAA, and more

Stars
1,159
Forks
169
Last commit
1 day ago

Compliance management platform where dedicated compliance officers handle your entire program, from risk assessments to audit coordination, with automated evidence collection.

Open Source Alternative to:

Vanta

Openlane

Continuous compliance automation for SOC 2, ISO 27001 & more

Stars
261
Forks
46
Last commit
16 hours ago

Automates evidence collection, control tracking, and audit reporting across SOC 2, ISO 27001, NIST 800-53, GDPR, and 12+ other frameworks in one platform.

Open Source Alternative to:

Vanta

AgentMail

Email inbox API built for AI agents and workflows

Stars
35
Forks
15
Last commit
2 days ago

Provides AI agents with real email inboxes via REST API. Create inboxes instantly, send and receive messages, search threads, and handle attachments programmatically.

OpenClaw

An AI assistant that acts, not just answers

Stars
378,602
Forks
79,181
Last commit
11 hours ago

A personal AI assistant that connects to your existing chat apps and handles real tasks like email, calendar, and flight check-ins on your behalf.

Open Source Alternative to:

Zo Computer

n8n

Visual workflow automation with code flexibility and AI agents

Stars
192,423
Forks
58,523
Last commit
16 hours ago

Build automated workflows connecting 500+ apps, write custom code, and deploy AI agents with full visibility into every decision. Self-hostable or cloud.

Open Source Alternative to:

Make

OpenCode

AI coding agent for terminal, IDE, and desktop

Stars
174,122
Forks
21,018
Last commit
11 hours ago

Open source AI coding agent that works in your terminal, IDE, or desktop app, supporting 75+ LLM providers with no code storage.

Open Source Alternative to:

Claude Code

Open WebUI

One interface for every AI model you run or connect

Stars
141,421
Forks
20,320
Last commit
1 day ago

Self-hosted AI platform that connects local and cloud models, extends with Python, and keeps your data under your control.

Open Source Alternative to:

Claude

Dify

Build and deploy AI agents and RAG pipelines visually

Stars
145,104
Forks
22,839
Last commit
11 hours ago

Visual platform for building agentic workflows, RAG pipelines, and LLM-powered apps. Supports hundreds of models, MCP integration, and self-hosted deployment.

Open Source Alternative to:

Glide

Langflow

Visual builder for AI agents and RAG pipelines

Stars
149,633
Forks
9,262
Last commit
15 hours ago

Build, deploy, and iterate on AI agents, RAG applications, and MCP servers using a drag-and-drop visual interface backed by Python.

Open Source Alternative to:

Voiceflow

Firecrawl

Turn any website into clean, AI-ready data via API

Stars
132,455
Forks
7,788
Last commit
17 hours ago

API for AI agents to search, scrape, crawl, and interact with the live web, returning clean Markdown, structured JSON, or screenshots from any page.

Open Source Alternative to:

Browserbase

Excalidraw

Collaborative whiteboard with a hand-drawn aesthetic

Stars
125,272
Forks
14,006
Last commit
19 hours ago

Virtual whiteboard for sketching diagrams, flowcharts, and wireframes with a distinctive hand-drawn look. Real-time collaboration built in.

Open Source Alternative to:

Microsoft Visio

Browser Use

Let AI agents control any browser, at scale

Stars
98,716
Forks
11,014
Last commit
19 hours ago

Python library that lets AI agents browse the web by giving them real browser control, DOM access, and the ability to interact with any website.

Open Source Alternative to:

Browserbase

RustDesk

Self-hosted remote desktop you fully control

Stars
116,113
Forks
17,561
Last commit
11 hours ago

Cross-platform remote desktop software that runs on your own servers, giving you full data control as a direct alternative to TeamViewer and AnyDesk.

Open Source Alternative to:

AnyDesk

Godot

Free 2D and 3D game engine for cross-platform projects

Stars
112,493
Forks
25,643
Last commit
2 days ago

Build 2D, 3D, and XR games with a full-featured engine that includes its own scripting language, scene editor, and export tools for multiple platforms.

Open Source Alternative to:

Unreal Engine

Supabase

Postgres-powered backend platform for production apps

Stars
104,162
Forks
12,724
Last commit
15 hours ago

Provides a full backend stack built on Postgres: authentication, auto-generated APIs, edge functions, realtime subscriptions, file storage, and vector search.

Open Source Alternative to:

Firebase

Immich

Self-hosted photo and video backup for your own server

Stars
103,274
Forks
5,844
Last commit
11 hours ago

Back up, organize, search, and browse your personal photo and video library on your own server, with no third-party cloud access.

Open Source Alternative to:

Google Photos

Home Assistant

Local control smart home automation with privacy first

Stars
87,711
Forks
37,669
Last commit
13 hours ago

Open source home automation platform supporting 1000+ devices with local control, powerful automations, custom dashboards, and voice assistant. No cloud required.

Open Source Alternative to:

Amazon Alexa

LobeChat

Manage, build, and run AI agent teams around the clock

Stars
78,625
Forks
15,417
Last commit
11 hours ago

A collaborative platform to create, schedule, and operate AI agents that handle long-running tasks, team workflows, and automated jobs without constant oversight.

Open Source Alternative to:

Claude

Uptime Kuma

Self-hosted uptime monitoring with a clean dashboard

Stars
87,982
Forks
7,987
Last commit
16 hours ago

Monitors websites, APIs, and services with real-time alerts, a status page, and support for dozens of notification channels. Self-hosted and Docker-friendly.

Open Source Alternative to:

Opsgenie

OpenHands

Autonomous coding agents that complete real engineering tasks

Stars
76,941
Forks
9,772
Last commit
12 hours ago

AI agent platform that runs autonomous coding agents to plan, write, and ship changes across codebases end-to-end, with support for any model and self-hosted deployment.

Open Source Alternative to:

Claude Code

Zed

High-performance code editor built for speed and AI

Stars
85,204
Forks
9,069
Last commit
16 hours ago

A Rust-built code editor from the creators of Atom and Tree-sitter, combining native performance with multiplayer collaboration and deep AI integration.

Open Source Alternative to:

Claude Code

LocalSend

Share files securely across all devices without servers

Stars
83,292
Forks
4,528
Last commit
9 days ago

Free, open-source file sharing tool for nearby devices. Cross-platform support with end-to-end encryption, no registration required, automatic device discovery.

Open Source Alternative to:

Apple AirDrop

pi

Minimal terminal coding agent you can fully customize

Stars
62,391
Forks
7,557
Last commit
11 hours ago

Terminal-based coding agent with a minimal core, 15+ LLM providers, tree-structured session history, and a TypeScript extension system for building your own workflows.

Open Source Alternative to:

Claude Code

Daytona

Isolated sandboxes for executing AI-generated code safely

Stars
72,435
Forks
5,611
Last commit
2 days ago

Elastic sandbox infrastructure for running AI-generated code with sub-90ms environment creation, stateful operations, and isolated execution across Python, TypeScript, Go, and more.

Open Source Alternative to:

Together Sandbox