Find the best open-source alternatives to popular software.

BestAlternative helps you find self-hosted, privacy-friendly, free, and local-first replacements for paid software, compare the tradeoffs, and plan a practical migration path.

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OpenClaw logo

OpenClaw

Personal AI assistant that clears inboxes, sends emails, manages calendars, and checks in for flights. Works through WhatsApp, Telegram, and other chat apps.

379,772
MIT

Alternative to: Zo Computer

n8n logo

n8n

A flexible automation platform combining AI capabilities with business process automation, offering both code-based and no-code options for technical teams.

193,440
Other

Alternative to: Make

OpenCode logo

OpenCode

Native terminal UI AI coding agent with LSP support, multi-session capability, shareable links, and compatibility with 75+ LLM providers including Claude Pro.

152,984
MIT

Alternative to: Claude Code

Langflow logo

Langflow

Low-code platform for building agentic and RAG applications with drag-and-drop components, Python customization, and support for any LLM or vector database.

149,902
MIT

Alternative to: Voiceflow

Dify logo

Dify

Create, deploy, and manage AI-native apps effortlessly with a user-friendly platform that combines LLMs and your data

146,035
Other

Alternative to: Humanloop

Open WebUI logo

Open WebUI

A customizable interface for AI that works offline, supporting Ollama and OpenAI-compatible APIs while adapting to your specific workflow needs.

142,501
BSD-3-Clause

Alternative to: Grok

Excalidraw logo

Excalidraw

Excalidraw is a virtual whiteboard tool that allows teams to easily create and share sketches with a unique hand-drawn aesthetic.

125,824
MIT

Alternative to: Miro

RustDesk logo

RustDesk

Cross-platform remote desktop solution offering seamless control, file transfer, and screen sharing with robust security and customization options.

116,595
AGPL-3.0

Alternative to: AnyDesk

Firecrawl logo

Firecrawl

Efficient, scalable web crawler built on Rust. Extract data, monitor sites, and automate web tasks with ease and speed.

113,782
AGPL-3.0

Alternative to: Browserbase

Godot logo

Godot

Free, open-source game engine for 2D/3D development with cross-platform support, visual scripting, and comprehensive tools for indie developers.

112,863
MIT

Alternative to: Unreal Engine

Supabase logo

Supabase

A powerful, scalable backend platform offering real-time databases, authentication, storage, and serverless functions for rapid development.

104,594
Apache-2.0

Alternative to: Firebase

Immich logo

Immich

Immich is an open-source, privacy-focused platform for managing and storing your personal photos and videos.

104,015
AGPL-3.0

Alternative to: Google Photos

Browser Use logo

Browser Use

Enables AI agents to interact with websites by extracting interactive elements and automating browser actions for more efficient web automation

99,860
MIT

Alternative to: Browserbase

Uptime Kuma logo

Uptime Kuma

A user-friendly, open-source uptime monitoring solution for tracking website and service availability

88,273
MIT

Alternative to: Opsgenie

Home Assistant logo

Home Assistant

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

87,888
Apache-2.0

Alternative to: HomeKit

Zed logo

Zed

High-performance code editor built in Rust with native AI integration, real-time collaboration, and lightning-fast performance across multiple platforms.

85,680
Other

Alternative to: Claude Code

LocalSend logo

LocalSend

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

83,847
Apache-2.0

Alternative to: Apple AirDrop

Hoppscotch logo

Hoppscotch

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

79,595
MIT

Alternative to: Postman

NetData logo

NetData

Powerful, efficient, and user-friendly monitoring solution for servers, containers, and applications with instant insights and alerts.

79,337
GPL-3.0

Alternative to: DataDog

Elasticsearch logo

Elasticsearch

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

77,078
Other

Alternative to: Algolia

LobeChat logo

LobeChat

LobeChat is an open-source AI chat platform that provides a customizable and feature-rich experience for interacting with AI assistants.

75,922
Other

Alternative to: Grok

Grafana logo

Grafana

Grafana is a multi-platform open source analytics and interactive visualization web application that provides charts, graphs, and alerts for the web.

74,560
AGPL-3.0

Alternative to: Power BI

Apache Superset logo

Apache Superset

Open-source solution for fast, intuitive data exploration and visualization, supporting various databases and skill levels.

73,413
Apache-2.0

Alternative to: Power BI

OBS Studio logo

OBS Studio

OBS Studio offers high-quality video recording and live streaming capabilities, supporting multiple platforms and providers.

73,338
GPL-2.0

Alternative to: Loom

OpenHands logo

OpenHands

Build and deploy autonomous coding agents at scale with model-agnostic, secure platform. Automate code reviews, testing, documentation, and complex refactoring tasks.

72,468
MIT

Alternative to: Claude Code

Strapi logo

Strapi

A powerful headless CMS that enables developers to build, deploy, and manage content-rich applications with customizable APIs and a user-friendly admin panel.

72,421
Other

Alternative to: Sanity

Daytona logo

Daytona

Execute AI-generated code safely with 90ms sandbox creation, isolated environments, and enterprise-grade security. Perfect for AI agents and development workflows.

72,381
AGPL-3.0

Alternative to: Modal

AppFlowy logo

AppFlowy

An open-source alternative to Notion, offering powerful note-taking, task management, and database features in a customizable interface.

70,156
AGPL-3.0

Alternative to: Notion

Affine logo

Affine

All-in-one workspace for note-taking, whiteboarding, and task management with real-time collaboration and local-first architecture.

69,620
Other

Alternative to: Notion

OpenBB logo

OpenBB

Integrate, visualize, and analyze data in one place with OpenBB's AI-driven platform for financial research and analytics.

69,495
Other

Alternative to: Power BI