Open Source Software Alternatives

Geo Activity Playground is a self-hosted data analysis and visualization tool for GPS-tracked outdoor activities. Explore routes, heatmaps, and detailed stats from every device.

Self-hosted automation platform for building agents that monitor and act on your behalf — a hackable, open source alternative to IFTTT and Zapier.

All-in-one open source platform that combines project management, CRM, chat, HR, and wiki as an alternative to Linear, Jira, Slack, and Notion.

Self-hosted open-source web gallery for photos and videos with AI-powered image discovery, face detection, and tagging.

Self-hosted reading server for manga, comics, and ebooks with responsive web readers, smart filters, and an OPDS feed.

A self-hosted dividend portfolio tracker built with Flask that helps long-term investors track passive income, portfolio health, and progress toward financial independence.

Free, open-source screen recorder and video editor with polished demos, captions, zooms, and local AI editing.

Secure and easy self-hosted file sharing platform.

A fast directory-first photo gallery website, with rich UI, optimized for running on low resource servers (especially on Raspberry Pi).

RunnerUp is a free, open source GPS run tracker for Android with audio cues, interval workouts, heart rate zones — no accounts or ads.

A self-hosted financial research platform with a Bloomberg-style interface for SEC filings, stock prices, and AI-powered analysis.

Lightweight client/server network backup and restore tool with librsync deduplication, TLS client authentication, and Windows and Unix clients.

A PDF viewer that seamlessly integrates with any JavaScript project

A full-stack TypeScript CMS built on Astro and Cloudflare, reimagining WordPress with serverless, type-safe foundations.

Element Call delivers end-to-end encrypted group video and voice calls built on the open Matrix protocol. No accounts, no tracking, fully self-hostable, and ready for serious team use.

Privacy-respecting mobile book tracker for iOS and Android, built with Flutter — your library lives on your device.

Online image editor with layers, filters, and effects that runs entirely in the browser. An open source Photoshop alternative with no ads or account required.

Lightweight, self-hosted personal finance and bookkeeping app with a mobile-friendly UI — an open alternative to Mint and YNAB.

The best and simplest open-source tool for website change detection, page monitoring, and alerts. Self-hostable with Docker or use the SaaS plan.

Minimalist, federated blogging platform for writers who want a clean, distraction-free space to publish.

A simple, yet powerful CI/CD engine with great extensibility. Self-hosted with minimal resource requirements.

Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.

The easiest way to run a self-hosted WireGuard VPN with a web-based admin UI, automatic client management, and one-liner deployment.

Simple golang utility helping to discover large files and folders.

GNU Image Manipulation Program — the venerable free, open source image editor and Adobe Photoshop alternative.

Developer-first open source Typeform alternative (formerly Blocks.md) with Markdown-defined forms and native Google Sheets integration.

Open source customer feedback platform to collect, organize, and prioritize feature requests from users.

Free open-source self-hosted bookmark manager with customizable nested tags, fast search, and local data storage.

Free, open source CRM for managing leads, contacts, sales pipelines, email campaigns, and customer support on your own servers.

Privacy-focused, open-source note-taking and to-do app with end-to-end encryption and multi-device sync.

KeePassXC is a cross-platform, community-driven port of KeePass Password Safe. Store credentials locally in an encrypted database, with no cloud required and full data control.

Self-hosted notes and checklists with markdown files, Kanban task projects, SSO, PGP encryption, and a REST API.

Dev-first open source alternative to Jira and Linear for issue tracking, sprint planning, and product development.

Open source Typeform and Google Forms alternative for building beautiful conversational forms and surveys.

End-to-end encrypted, open source notes app that is a privacy-focused alternative to Evernote, Notion, and Apple Notes.

Free, self-hostable meeting scheduler built on Google Apps Script — a Cal.com and Calendly alternative for Gmail users.

Modern, open source time-tracking app for freelancers and teams with project, client, task, and reporting features.

The fastest growing-team knowledge base — beautiful, realtime collaborative, feature packed, and markdown compatible Notion and Confluence alternative.

Lightweight, Google-searchable open source Slack and Discord alternative designed for online communities.

Open source help desk and issue management platform — a self-hostable alternative to Zendesk and Jira for support teams.

Open source time-tracking application for freelancers, teams, and organisations, with timesheets, invoicing, and detailed reports.

Self-hostable, Dockerized mail server bundle that combines Postfix, Dovecot, and a polished web UI — a Gmail and Microsoft 365 alternative for organisations.

Privacy-first, open source knowledge management and note-taking platform that is a powerful Roam Research and Obsidian alternative.

Open source project management system for non-project managers, built with ADHD, autism, and dyslexia in mind — an Asana and Monday.com alternative.

Free, open source digital painting and illustration application that is a popular alternative to Photoshop and Procreate.

Modern, open source Trello alternative with kanban boards, lists, cards, and collaborative project tracking.

Free, open source vector graphics editor for illustrations, logos, icons, and technical drawings — a strong alternative to Adobe Illustrator.

Open source LLM engineering platform for tracing, evaluating, monitoring, and managing prompts as an alternative to LangSmith and Helicone.

Open-source, security-first password manager designed for teams. End-to-end encryption, granular access control, and self-hostable.

Open source React-based Typeform alternative for building conversational multi-step forms, surveys, and quizzes.

Open-source social media scheduler. Self-hosted Buffer alternative with AI agents, native publishing to 12 networks, and first-class MCP support.