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.

382,534
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.

196,004
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.

151,607
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

148,459
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.

145,016
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.

127,179
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.

118,027
AGPL-3.0

Alternative to: AnyDesk

Godot logo

Godot

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

113,928
MIT

Alternative to: Unreal Engine

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

Immich logo

Immich

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

107,254
AGPL-3.0

Alternative to: Google Photos

Supabase logo

Supabase

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

106,134
Apache-2.0

Alternative to: Firebase

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

104,164
MIT

Alternative to: Browserbase

Uptime Kuma logo

Uptime Kuma

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

88,999
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.

88,387
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.

86,782
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.

84,979
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.

79,775
MIT

Alternative to: Postman

NetData logo

NetData

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

79,591
GPL-3.0

Alternative to: DataDog

Elasticsearch logo

Elasticsearch

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

77,566
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.

75,503
AGPL-3.0

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.

73,787
GPL-2.0

Alternative to: Loom

Apache Superset logo

Apache Superset

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

73,775
Apache-2.0

Alternative to: Power BI

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.

72,641
Other

Alternative to: Sanity

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

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

Crawl4AI logo

Crawl4AI

Fast, AI-ready web crawler that generates clean markdown for RAG pipelines. Features adaptive crawling, structured extraction, and advanced browser control.

72,277
Apache-2.0

Alternative to: Browserbase

OpenBB logo

OpenBB

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

70,429
Other

Alternative to: Power BI

Affine logo

Affine

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

70,306
Other

Alternative to: Notion