Finde die besten Open-Source-Alternativen zu beliebter Software.

BestAlternative hilft dir, selbst gehostete, datenschutzfreundliche, kostenlose und local-first Ersatzlösungen für kostenpflichtige Software zu finden, die wichtigsten Abwägungen zu vergleichen und einen praktikablen Migrationspfad zu planen.

best-notion-alternatives-2026-affine-appflowy-anytype-comparison
Alle Alternativen anzeigen
Bluesky logo

Bluesky

A decentralized social network focused on fostering meaningful interactions and giving users control over their data and experience.

18,190
MIT

Alternative zu: Facebook

Audacity logo

Audacity

Free, open-source audio editor and recorder for all platforms. Record, edit, mix and enhance audio with professional tools. Perfect for music, podcasts, and more.

17,529
Other

Alternative zu: Adobe Audition

Windmill logo

Windmill

Powerful, self-hosted platform for building and running workflows, scripts, and apps with code-first approach and collaborative features.

17,480
Other

Alternative zu: Make

iTerm 2 logo

iTerm 2

Feature-rich terminal replacement for macOS with split panes, search, autocomplete, and extensive customization options for enhanced productivity.

17,478
GPL-2.0

Alternative zu: Warp

Leon logo

Leon

Leon is an AI-powered virtual assistant that lives on your server, automating tasks and managing your digital life with privacy and customization.

17,424
MIT

Alternative zu: ChatGPT

ActivityWatch logo

ActivityWatch

Free open-source time tracker that automatically monitors your device usage. Cross-platform support with local data storage for complete privacy.

17,421
MPL-2.0

Alternative zu: RescueTime

T3 Code logo

T3 Code

Advanced AI coding assistant that enhances development workflow with intelligent code suggestions, automated debugging, and seamless integration.

17,403
MIT

Alternative zu: Claude Code

QuestDB logo

QuestDB

Open-source time-series database offering massive ingestion throughput, millisecond queries, and SQL extensions, designed for optimal performance at any hardware scale.

17,238
Apache-2.0

Alternative zu: MongoDB

Turso logo

Turso

Turso provides a simple developer experience with SQLite compatibility, allowing you to build and scale multi-tenant applications with unlimited databases.

17,112
MIT

Alternative zu: Supabase

Maxun logo

Maxun

Train robots in 2 minutes to scrape web data automatically. No coding required. Handles pagination, CAPTCHAs, and layout changes with AI.

17,092
AGPL-3.0

Alternative zu: Octoparse

Ceph logo

Ceph

Ceph provides unified object, block, and file storage from a single cluster built on commodity hardware.

16,908
Other

Alternative zu: Amazon S3

Postal logo

Postal

Self-hosted email delivery platform with powerful features for transactional and bulk emails, offering full control and customization.

16,723
MIT

Alternative zu: Resend

Docs logo

Docs

Transform document collaboration with real-time editing, version control, and secure sharing features that enhance team productivity and communication.

16,712
MIT

Alternative zu: Notion

Weaviate logo

Weaviate

Open-source vector database designed for building powerful, production-ready AI applications with hybrid search capabilities and flexible deployment options.

16,708
BSD-3-Clause

Alternative zu: Supabase

Bolt.new logo

Bolt.new

bolt.new is a platform that enables developers to quickly create, modify, and deploy full-stack web applications using various popular frameworks and technologies.

16,504
MIT

Alternative zu: Lovable

Flarum logo

Flarum

Lightweight, extensible forum platform with a sleek interface, powerful moderation tools, and seamless integration capabilities.

16,368
MIT

Alternative zu: Skool

Trigger logo

Trigger

A developer-friendly platform for building, scheduling, and managing background jobs in your applications with minimal setup.

15,944
Apache-2.0

Alternative zu: Make

Scalar logo

Scalar

Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support.

15,871
MIT

Alternative zu: Mintlify

OpenProject logo

OpenProject

Powerful classic, agile or hybrid project management software with a focus on data privacy and security

15,805
GPL-3.0

Alternative zu: Jira

Spree Commerce logo

Spree Commerce

Headless eCommerce platform with REST API, TypeScript SDK, and Next.js storefront. Handle B2B, multi-vendor marketplaces, and cross-border commerce. Self-hosted, open source, zero fees.

15,606
BSD-3-Clause

Alternative zu: Shopify

Plandex logo

Plandex

Terminal-based AI coding assistant with 2M token context window, diff review sandbox, and smart context management for building production-ready software.

15,577
MIT

Alternative zu: Claude Code

Apache Answer logo

Apache Answer

A versatile, community-driven Q&A platform that fosters collaboration and knowledge exchange within organizations and communities.

15,486
Apache-2.0

Alternative zu: Skool

AITable logo

AITable

AITable.ai offers a visual database platform that simplifies workflow automation and connects to over 6,000 apps through integrations like Zapier and Make.

15,448
AGPL-3.0

Alternative zu: Airtable

SuperTokens logo

SuperTokens

Open-source authentication solution offering flexible, self-hosted user management with advanced features and easy integration.

15,250
Other

Alternative zu: Clerk

Cachet logo

Cachet

Open-source status page platform that helps organizations communicate system status and incidents effectively with customizable components and metrics tracking

15,193
Other

Alternative zu: UptimeRobot

Seafile logo

Seafile

Open source file sync and sharing platform with custom properties, AI automation, collaborative editing, and enterprise-grade security for teams.

15,080
Other

Alternative zu: Google Drive

Organic Maps logo

Organic Maps

Free, open-source offline maps app with detailed trails, turn-by-turn navigation, and zero tracking. Perfect for hikers, cyclists, and travelers seeking privacy.

15,021
Other

Alternative zu: Google Maps

Logstash logo

Logstash

Logstash is a free and open server-side data processing pipeline that ingests data from multiple sources, transforms it, and sends it to your desired destination.

14,914
Other

Alternative zu: DataDog

Shotcut logo

Shotcut

Free, open-source video editor supporting 4K resolution, hundreds of formats, and professional features like Blackmagic Design integration across Windows, Mac, and Linux.

14,879
GPL-3.0

Alternative zu: CapCut

Botpress logo

Botpress

A comprehensive platform for creating AI agents with intuitive tools, extensive integrations, and enterprise-grade features powered by the latest language models.

14,855
MIT

Alternative zu: Voiceflow