Find the best open-source alternatives to popular software.

Cross-platform note-taking app with end-to-end encryption, offline access, and powerful organization features for privacy-conscious users.

BleachBit frees disk space & protects privacy by deleting cache, cookies, history & temp files from Firefox, Chrome & more. Open source for Linux/Windows.

Open-source online editor for documents, spreadsheets, presentations, and PDFs. Features real-time collaboration, AI integration, and accessibility tools.

CloudQuery is an open-source ELT platform that enables easy data integration from hundreds of cloud and security tools to any destination.

Powerful feature management platform for seamless software releases, A/B testing, and personalized user experiences.

Free, open-source image editor with professional tools for photo manipulation, digital art creation, and graphic design. Cross-platform support.

Open source password manager focused on security, collaboration and privacy for organizations

Self-serve analytics platform that transforms dbt models into interactive dashboards, enabling data-driven decisions across organizations.

Complete self-hosting solution with automated maintenance, Smart-Shield protection, anti-DDoS, SSO authentication, and VPN access for secure private cloud management.

Open-source authorization service for implementing fine-grained access controls. Centralized, scalable solution supporting RBAC, ABAC and ReBAC with Google Zanzibar-inspired architecture.

All-in-one analytics platform for mobile, web, and desktop apps. Track user behavior, monitor performance, and optimize your product.

Web-based continuous localization platform with version control integration, quality checks, and clean interface. Used by 2,500+ projects in 165+ countries.

OctoBot is an open-source platform for automated cryptocurrency trading, offering customizable strategies and easy integration with exchanges.

Zammad is an open-source helpdesk software that centralizes customer communications and helps deliver great service experiences efficiently.

Open-source infrastructure for long-lived, in-memory processes called Actors. Combines state and compute with sub-millisecond latency, realtime capabilities, and horizontal scaling.

Enterprise-grade file management solution offering intuitive collaboration, seamless integration, and comprehensive security with full GDPR compliance.

Open-source web and product analytics platform combining Mixpanel's power with Plausible's simplicity. Cookie-less tracking, real-time data, and full data ownership.

Comprehensive offline navigation app with detailed maps, turn-by-turn guidance, and specialized routing for hiking, cycling, and walking worldwide.

Simplify backend processes with event-driven functions, seamless integrations, and powerful debugging tools for developers.

Open-source, Pusher-compatible WebSockets server that's simple, fast, and resilient for building real-time applications.

Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.

Fast, modern e-commerce with instant setup and full customization. Powered by Stripe for seamless transactions.

Create customizable virtual workspaces for remote teams to interact naturally, host events, and collaborate through spontaneous conversations and scheduled meetings.

Streamline API authentication with UnKey's powerful, developer-friendly platform for creating, revoking, and monitoring API keys.

Transform your app into a global product with AI-powered localization that integrates directly into your development workflow. Supports 83+ languages with Git-native automation.

Plunk unifies marketing, transactional, and broadcast emails into a single, complete solution for businesses of all sizes.

Orchestrate multiple coding agents in parallel for seamless development. Isolated Git worktrees ensure organized workflows.

Cross-platform desktop AI assistant supporting multiple providers, local knowledge base, and custom prompts. Integrates MCP protocol for enhanced AI tool capabilities.

Open-source eCommerce platform offering customization, scalability and enterprise-grade features for brands of all sizes

Free kanban project management with unlimited boards, lists, and cards. Import Trello boards, collaborate with teams, and self-host for complete control.