Open-source tools directory

Discover open-source tools worth using.

Browse self-hosted, privacy-friendly, free, and local-first software, then compare project details and repository signals.

Showing 30 of 695 Tools.

Fincept Terminal logo

Fincept Terminal

Comprehensive financial data platform offering economic insights, market analysis, and portfolio management tools

18,611
Other

Alternative to: Bloomberg Terminal

Nuclear logo

Nuclear

Open-source music player that streams from YouTube, SoundCloud, Bandcamp and local files. No ads, no tracking, no data collection - just pure music freedom.

18,576
AGPL-3.0

Alternative to: Spotify

Yaak logo

Yaak

A modern API client offering local-only data storage, Git integration, plugin extensibility, and multi-protocol support for developers.

18,514
MIT

Alternative to: Postman

Cap logo

Cap

Cross-platform screen recording tool with instant sharing, local editing, AI features, and custom S3 storage. Open source alternative to Loom.

18,418
AGPL-3.0

Alternative to: Loom

OpenWorker logo

OpenWorker

OpenWorker is a local-first, open-source AI coworker for macOS and Windows that produces files, works across 25+ integrations and MCP tools, supports hosted or local models, and approval-gates consequential actions.

18,404
MIT

Alternative to: Claude Cowork

Bluesky logo

Bluesky

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

18,320
MIT

Alternative to: Facebook

Parlant logo

Parlant

Conversational AI engine that keeps agents business-aligned and compliant as you scale. Build adaptive agents through feedback-driven development.

18,299
Apache-2.0

Alternative to: Voiceflow

Windmill logo

Windmill

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

18,089
Other

Alternative to: Make

Maxun logo

Maxun

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

17,633
AGPL-3.0

Alternative to: Octoparse

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.

17,553
MIT

Alternative to: ChatGPT

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 to: Warp

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 to: RescueTime

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.

17,408
Apache-2.0

Alternative to: 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.

17,250
MIT

Alternative to: Supabase

Ceph logo

Ceph

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

17,091
Other

Alternative to: Amazon S3

Docs logo

Docs

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

16,891
MIT

Alternative to: Notion

Weaviate logo

Weaviate

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

16,860
BSD-3-Clause

Alternative to: Supabase

Postal logo

Postal

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

16,847
MIT

Alternative to: Resend

Coder logo

Coder

Self-hosted development platform that enables secure, scalable remote coding with automated provisioning, reduced cloud costs, and enterprise-grade security.

16,814
AGPL-3.0

Alternative to: GitHub Codespaces

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.

16,572
MIT

Alternative to: Lovable

Trigger logo

Trigger

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

16,457
Apache-2.0

Alternative to: Make

Flarum logo

Flarum

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

16,409
MIT

Alternative to: Skool

OpenProject logo

OpenProject

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

16,289
GPL-3.0

Alternative to: Jira

Scalar logo

Scalar

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

16,218
MIT

Alternative to: Mintlify

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.

15,738
BSD-3-Clause

Alternative to: 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.

15,688
MIT

Alternative to: Claude Code

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.

15,627
AGPL-3.0

Alternative to: Airtable

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.

15,550
Other

Alternative to: Google Maps

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 to: Skool

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.

15,333
GPL-3.0

Alternative to: CapCut