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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Task manager with time tracking, focus mode, and deep work tools
Stars
Stars growing over the last 30 days23,164Last commit
10 hours agoLicense
MIT
Privacy-first task manager combining task lists, Kanban, Pomodoro timers, time tracking, and integrations with GitHub, GitLab, and Jira. No account required, works offline.
Open Source Alternative to:
Serverless Postgres for modern applications
Stars
23,261Last commit
2 months agoLicense
Apache-2.0
Cloud-native, auto-scaling Postgres with instant branching, bottomless storage, and pay-per-use pricing
Open Source Alternative to:
Fast, secure, offline API client with Git integration
Stars
19,364Last commit
13 hours agoLicense
MIT
A modern API client offering local-only data storage, Git integration, plugin extensibility, and multi-protocol support for developers.
Open Source Alternative to:
Time-series database built on top of PostgreSQL
Stars
23,761Last commit
10 hours agoLicense
Unknown
PostgreSQL extension for time-series data with automatic partitioning, up to 95% columnar compression, continuous aggregates, and ~200 native SQL functions.
Open Source Alternative to:
Legally binding document signing for individuals and teams
Stars
18,798Last commit
18 hours agoLicense
AGPL-3.0
Self-hostable e-signature platform for creating, sending, and signing PDF forms with automatic digital signatures, a REST API, and embeddable components.
Open Source Alternative to:
Social media reimagined for community and connection
Stars
18,353Last commit
9 hours agoLicense
MIT
A decentralized social network focused on fostering meaningful interactions and giving users control over their data and experience.
Open Source Alternative to:
Collaborative bookmark manager for teams and individuals
Stars
20,223Last commit
1 day agoLicense
AGPL-3.0
Open-source platform to collect, organize, and preserve webpages with powerful collaboration features
Open Source Alternative to:
Unify data models and metrics across your entire stack
Stars
21,080Last commit
9 hours agoLicense
Unknown
Cube is a universal semantic layer that connects data sources to analytics tools, providing consistent definitions and fast queries.
Open Source Alternative to:
Desktop multi-agent workforce for automating real tasks
Stars
15,666Last commit
9 hours agoLicense
Apache-2.0
Self-hostable desktop app that runs a coordinated team of AI agents to browse the web, manage files, execute terminal commands, and complete complex workflows.
Open Source Alternative to:
Free, private screen recording for Chrome
Stars
18,806Last commit
2 days agoLicense
GPL-3.0
Capture, annotate, and edit screen recordings with no limits or sign-up required. Completely private and open source.
Open Source Alternative to:
No-code web scraping, crawling, and extraction platform
Stars
18,049Last commit
12 hours agoLicense
AGPL-3.0
Turn any website into structured data using a visual recorder, natural language prompts, or API. Includes proxy rotation, scheduling, and webhook integrations.
Open Source Alternative to:
Visual project management with complete data control
Stars
21,142Last commit
15 hours agoLicense
MIT
Open-source Kanban board solution offering visual task management, self-hosting capabilities, and robust security features for teams and individuals.
Open Source Alternative to:
Empower your digital strategy with actionable insights
Stars
21,984Last commit
9 hours agoLicense
GPL-3.0
Comprehensive web analytics platform offering full data ownership, privacy protection, and customizable insights for data-driven decision making.
Open Source Alternative to:
Privacy-first knowledge base with any AI model you choose
Stars
16,609Last commit
9 hours agoLicense
Apache-2.0
Self-hostable NotebookLM alternative that lets teams build searchable knowledge bases from diverse sources, with support for any LLM and no data limits.
Open Source Alternative to:
Run dozens of AI coding agents in parallel on your machine
Stars
Stars growing over the last 30 days15,583Last commit
10 hours agoLicense
Elastic-2.0
macOS app that orchestrates multiple AI coding agents simultaneously, each in its own isolated Git worktree, so you can work on many tasks at once.
Open Source Alternative to:
Secure, open-source document signing for everyone
Stars
15,577Last commit
19 hours agoLicense
AGPL-3.0
Streamline your document workflows with a powerful, privacy-focused e-signature platform that puts you in control of your data.
Open Source Alternative to:
Build AI agents and RPA workflows without writing code
Stars
21,678Last commit
8 months agoLicense
Unknown
No-code platform for building AI agents and RPA workflows that automate repetitive business tasks across finance, HR, sales, and operations.
Open Source Alternative to:
Open-source workflow automation for developers
Stars
18,276Last commit
9 hours agoLicense
Unknown
Powerful, self-hosted platform for building and running workflows, scripts, and apps with code-first approach and collaborative features.
Open Source Alternative to:
Create, edit and share documents with real-time collaboration
Stars
16,948Last commit
13 hours agoLicense
MIT
Transform document collaboration with real-time editing, version control, and secure sharing features that enhance team productivity and communication.
Open Source Alternative to:
Scalable open-source distributed storage system
Stars
17,170Last commit
9 hours agoLicense
Unknown
Ceph provides unified object, block, and file storage from a single cluster built on commodity hardware.
Open Source Alternative to:
Secure password management for individuals and businesses
Stars
20,486Last commit
9 hours agoLicense
AGPL-3.0
Bitwarden is an open source password manager that securely stores, shares, and autofills passwords across unlimited devices.
Open Source Alternative to:
Run long-running AI tasks without timeouts or servers
Stars
16,621Last commit
11 hours agoLicense
Apache-2.0
Open source TypeScript platform for building and deploying AI agents and background workflows with retries, queues, observability, and elastic scaling.
Open Source Alternative to:
Fast, secure cloud development environments on your infrastructure
Stars
17,188Last commit
9 hours agoLicense
AGPL-3.0
Self-hosted development platform that enables secure, scalable remote coding with automated provisioning, reduced cloud costs, and enterprise-grade security.
Open Source Alternative to:
Fast grammar checking that respects your privacy
Stars
Stars growing over the last 30 days17,147Last commit
9 hours agoLicense
Apache-2.0
Open source grammar checker that analyzes your writing quickly while keeping your data completely private and secure on your device.
Open Source Alternative to:
High-performance API gateway with built-in LLM support
Stars
17,254Last commit
18 hours agoLicense
Apache-2.0
Apache APISIX is an open-source API gateway built on NGINX and etcd, offering dynamic routing, 100+ plugins, load balancing, authentication, and traffic management for APIs and LLM workloads.
Open Source Alternative to:
Free offline machine translation API you can host yourself
Stars
17,185Last commit
1 day agoLicense
AGPL-3.0
Self-hosted machine translation API that works offline. Download, setup, and run your own translation server in minutes with complete privacy control.
Open Source Alternative to:
Open-source mail server with unlimited sending & AI tools
Stars
15,955Last commit
5 months agoLicense
AGPL-3.0
Self-hosted email marketing platform with unlimited sending, AI-powered email creation, real-time analytics, and no monthly fees. Complete SMTP solution.
Open Source Alternative to:
Professional audio editing made simple and free
Stars
18,841Last commit
14 hours agoLicense
Unknown
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.
Open Source Alternative to:
Ad-free music player that streams from multiple sources
Stars
18,788Last commit
15 hours agoLicense
AGPL-3.0
Open-source desktop music player for Windows, macOS, and Linux. Search artists and tracks across multiple sources, build playlists, and listen without ads or tracking.
Open Source Alternative to:
AI agent runtime with encrypted enclaves for your secrets
Stars
12,678Last commit
1 day agoLicense
Apache-2.0
Runs AI agents inside Trusted Execution Environments on NEAR AI Cloud, keeping credentials encrypted and invisible to the model at all times.
Open Source Alternative to:
Open-source API documentation and testing platform
Stars
16,322Last commit
9 hours agoLicense
MIT
Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support.
Open Source Alternative to:
High-performance time series database for metrics and logs
Stars
17,910Last commit
12 hours agoLicense
Apache-2.0
Time series database and monitoring platform compatible with Prometheus, handling billions of metrics with lower resource usage than most alternatives.
Open Source Alternative to:
SQLite-compatible database for scalable multi-tenant applications
Stars
17,295Last commit
10 days agoLicense
MIT
Turso provides a simple developer experience with SQLite compatibility, allowing you to build and scale multi-tenant applications with unlimited databases.
Open Source Alternative to:
Open source headless commerce with REST API, no platform fees, built for B2B and marketplaces
Stars
15,778Last commit
9 hours agoLicense
BSD-3-Clause
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.
Open Source Alternative to:
Track time automatically with privacy-first design
Stars
19,376Last commit
11 hours agoLicense
MPL-2.0
Free open-source time tracker that automatically monitors your device usage. Cross-platform support with local data storage for complete privacy.
Open Source Alternative to:
Your open-source personal assistant for server automation
Stars
17,608Last commit
16 hours agoLicense
MIT
Leon is an AI-powered virtual assistant that lives on your server, automating tasks and managing your digital life with privacy and customization.
Open Source Alternative to:
Open-source ecommerce platform for WordPress
Stars
10,569Last commit
9 hours agoLicense
GPL-2.0
Build and manage online stores with customizable features, extensions, and themes for businesses of all sizes.
Open Source Alternative to:
Understand your audience with privacy-first analytics.
Stars
13,164Last commit
1 day agoLicense
AGPL-3.0
Get next-gen, open-source, and cookieless web analytics. Understand user behavior with session replays, real-time data, and web vitals. GDPR/CCPA compliant.
Open Source Alternative to:
Open-source Q&A platform for knowledge sharing
Stars
15,700Last commit
6 days agoLicense
Apache-2.0
A versatile, community-driven Q&A platform that fosters collaboration and knowledge exchange within organizations and communities.
Open Source Alternative to:
Classic, agile, or hybrid project management, self-hosted
Stars
16,696Last commit
9 hours agoLicense
GPL-3.0
Full-featured project management platform with Gantt charts, agile boards, time tracking, and team collaboration. Self-host or use managed cloud hosting.
Open Source Alternative to:
Privacy-first survey and experience management platform
Stars
13,162Last commit
12 hours agoLicense
AGPL-3.0
Collect feedback across websites, apps, and emails with targeted surveys, user segmentation, and GDPR-compliant data handling. Self-host or use the cloud.
Open Source Alternative to:
Secure, customizable identity infrastructure for developers
Stars
15,442Last commit
9 hours agoLicense
AGPL-3.0
ZITADEL provides a comprehensive identity management solution with easy APIs, customizable workflows, and serverless deployment options.
Open Source Alternative to:
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