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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Open source security automation platform for builders
Stars
3,824Last commit
10 hours agoLicense
AGPL-3.0
Tracecat is a scalable, self-hostable platform for automating security workflows and playbooks without limits.
Open Source Alternative to:
Browser and notebook combined with local-first AI
Stars
3,593Last commit
1 month agoLicense
Apache-2.0
A browser that doubles as a personal notebook, letting you research, summarize, and take notes on web pages, PDFs, and videos without switching apps.
Open Source Alternative to:
Secure, policy-based access control for modern applications
Stars
4,616Last commit
1 day agoLicense
Apache-2.0
A scalable authorization layer that provides fine-grained access control through externalized policies, enabling secure and flexible permissions management.
Open Source Alternative to:
YAML-defined workflow orchestration, no database required
Stars
4,289Last commit
5 hours agoLicense
GPL-3.0
Single-binary workflow orchestrator that runs scheduled DAGs locally or over SSH, with retries, human tasks, a built-in Web UI, and file-based state storage.
Open Source Alternative to:
Open-source ticketing system for streamlined support
Stars
3,422Last commit
16 hours agoLicense
AGPL-3.0
Frappe Helpdesk consolidates customer issues, automates workflows, and empowers self-service to boost agent productivity and customer satisfaction.
Open Source Alternative to:
Git-native feature management for developers
Stars
4,914Last commit
13 hours agoLicense
GPL-3.0
A feature flag platform that integrates with Git workflows, enabling developers to manage features directly in their codebase.
Open Source Alternative to:
Free office suite with Microsoft compatibility
Stars
4,461Last commit
5 hours agoLicense
GPL-3.0
Complete free office suite compatible with Microsoft formats (.doc, .docx, .xls, .xlsx, .ppt, .pptx). Open source alternative with regular updates.
Open Source Alternative to:
High-performance graph computing for scalable data analysis
Stars
4,598Last commit
5 hours agoLicense
Unknown
Memgraph is a scalable, in-memory graph database solution offering high-performance computing and Neo4j compatibility.
Open Source Alternative to:
Track coding time effortlessly, gain insights instantly
Stars
4,445Last commit
3 days agoLicense
MIT
Open-source, self-hosted time tracking solution for developers. Analyze coding habits, improve productivity, and visualize progress.
Open Source Alternative to:
Self-hosted photo management with full control
Stars
4,306Last commit
19 hours agoLicense
MIT
Free photo management tool that runs on your server. Upload, organize, and share photos with beautiful interface, EXIF support, and complete privacy control.
Open Source Alternative to:
Secure and elegant Matrix client for seamless conversations
Stars
3,920Last commit
2 days agoLicense
AGPL-3.0
Cinny offers a simple, elegant, and secure interface for Matrix-based conversations, protected by end-to-end encryption.
Open Source Alternative to:
Create powerful forms with ease and flexibility
Stars
3,789Last commit
1 day agoLicense
AGPL-3.0
A versatile open-source form builder for collecting data, managing submissions, and integrating with your favorite tools.
Open Source Alternative to:
Your digital identity, beautifully organized
Stars
3,890Last commit
3 days agoLicense
AGPL-3.0
A free, open-source link management platform for creating customizable, self-hosted link pages to showcase your online presence.
Open Source Alternative to:
Automate financial processes for smarter business decisions
Stars
3,923Last commit
3 days agoLicense
AGPL-3.0
Cloud-based accounting software that streamlines bookkeeping, generates intelligent reports, and offers multi-currency support for efficient financial management.
Open Source Alternative to:
Open source observability platform for modern applications
Stars
4,298Last commit
2 months agoLicense
AGPL-3.0
Uptrace is an OpenTelemetry-based platform that integrates traces, metrics, and logs to help monitor and optimize complex distributed systems.
Open Source Alternative to:
Scalable SQL database for real-time analytics
Stars
4,444Last commit
5 hours agoLicense
Apache-2.0
Distributed SQL database designed for high-speed ingestion and complex queries on massive datasets, ideal for IoT and time-series data.
Open Source Alternative to:
Next-gen WebSockets server for real-time apps
Stars
5,634Last commit
2 years agoLicense
AGPL-3.0
Open-source, Pusher-compatible WebSockets server that's simple, fast, and resilient for building real-time applications.
Open Source Alternative to:
Quick access to apps and files with keyboard shortcuts
Stars
4,601Last commit
25 days agoLicense
MIT
A keyboard-driven launcher that helps you quickly find and open applications, files, and bookmarks across Windows, macOS, and Linux
Open Source Alternative to:
AI-powered platform for engineering LLM products
Stars
3,354Last commit
17 hours agoLicense
Apache-2.0
Laminar is an open-source platform that helps collect, understand, and utilize data for building high-quality LLM applications.
Open Source Alternative to:
Embedded storage engine built on object storage
Stars
3,469Last commit
8 hours agoLicense
Apache-2.0
SlateDB is an embedded storage engine that leverages object storage for durability, scalability, and simplified replication without the need for disk management.
Open Source Alternative to:
Create stunning data visualizations with ease
Stars
4,062Last commit
10 hours agoLicense
MIT
A powerful, open-source platform for building interactive dashboards and charts from multiple data sources without coding.
Open Source Alternative to:
Effortlessly split expenses with friends and roommates
Stars
2,979Last commit
9 hours agoLicense
MIT
A user-friendly app for tracking shared expenses, settling debts, and managing group finances with ease and transparency.
Open Source Alternative to:
Create your own link-in-bio page with 100+ branded buttons
Stars
3,094Last commit
2 months agoLicense
MIT
Open source DIY alternative to Linktree with 100+ branded buttons, multiple themes, and optimized performance. No frameworks or JavaScript required.
Open Source Alternative to:
Open-source code security engine for developers
Stars
3,147Last commit
6 hours agoLicense
LGPL-2.1
Opengrep is a community-driven fork of SemgrepCE, providing accessible static code analysis and security scanning for developers.
Convert wearable data into actionable health insights with open algorithms
Stars
2,610Last commit
5 hours agoLicense
MIT
Self-hosted health intelligence platform with open algorithms, AI reasoning engine, and zero per-user fees. Connect Apple Health, Whoop, Garmin, Oura, and more.
Open Source Alternative to:
Create engaging surveys and gather valuable insights
Stars
3,746Last commit
6 hours agoLicense
Unknown
LimeSurvey is a powerful open-source tool for creating customizable online surveys, polls, and questionnaires.
Open Source Alternative to:
Craft flexible, beautiful digital experiences with ease
Stars
3,976Last commit
28 days agoLicense
Apache-2.0
A powerful, open-source CMS for Laravel that simplifies content management with a modular approach and intuitive admin panel.
Open Source Alternative to:
Open-source document editing suite for secure collaboration
Stars
3,366Last commit
24 hours agoLicense
Unknown
Powerful online document editor with Microsoft Office compatibility. Integrate into your infrastructure or use trusted hosting partners for secure team collaboration.
Open Source Alternative to:
Lightweight code editor with agents, Git, and terminal built in
Stars
3,095Last commit
13 hours agoLicense
Unknown
Open-source code editor for macOS, Windows, and Linux that puts coding agents, terminal, Git, and GitHub in a single window.
Open Source Alternative to:
Open source agency management tool for streamlined success
Stars
3,199Last commit
5 hours agoLicense
AGPL-3.0
Worklenz is a comprehensive project management platform that helps agencies organize tasks, track resources, and boost productivity.
Open Source Alternative to:
Track your life, your way
Stars
3,624Last commit
23 hours agoLicense
GPL-3.0
Ryot is a versatile platform for effortlessly tracking media, fitness, and more, replacing manual methods like spreadsheets.
Open Source Alternative to:
Open source ecommerce platform for modern businesses
Stars
3,441Last commit
5 hours agoLicense
MIT
A flexible and customizable ecommerce solution that enables businesses to build responsive online stores with advanced features and automation capabilities.
Open Source Alternative to:
Complete customer relationship management made simple
Stars
3,443Last commit
16 hours agoLicense
AGPL-3.0
Open-source CRM software for managing customers, companies, projects and opportunities. Intuitive interface with cloud and self-hosted options available.
Open Source Alternative to:
Python, SQL, and AI in a collaborative data notebook
Stars
3,015Last commit
13 hours agoLicense
Apache-2.0
Deepnote is an open-source collaborative notebook for data analysts and scientists, combining Python, SQL, AI assistance, and live sharing in one cloud platform.
Open Source Alternative to:
Professional raw photo processing made free and powerful
Stars
4,211Last commit
5 hours agoLicense
GPL-3.0
Free, cross-platform raw image processor with 32-bit floating point engine, advanced demosaicing algorithms, and professional-grade editing tools for photographers.
Open Source Alternative to:
Webhook delivery platform with retries, security, and a portal
Stars
3,438Last commit
5 hours agoLicense
MIT
Add customer-facing webhooks to your product without building the infrastructure. Handles retries, signatures, multi-tenancy, filtering, and monitoring at scale.
Open Source Alternative to:
Flexible CMS for custom digital experiences
Stars
3,611Last commit
5 hours agoLicense
Unknown
Build custom websites with a user-friendly CMS that puts content first. Features flexible architecture, GraphQL API, and powerful ecommerce capabilities.
Open Source Alternative to:
Group chat for friends and communities, without the baggage
Stars
3,379Last commit
7 hours agoLicense
Unknown
Self-hostable group chat with servers, channels, voice, and moderation tools. No ads, no data mining, built under EU privacy law.
Open Source Alternative to:
Self-hosted social media management without limits
Stars
3,783Last commit
7 months agoLicense
MIT
Create, schedule, and manage social media content from your own server with no subscription fees or usage restrictions.
Open Source Alternative to:
Transform any TV into professional digital signage
Stars
3,687Last commit
1 day agoLicense
Unknown
Free open-source digital signage software that turns Raspberry Pi or old PCs into powerful display solutions. Manage images, videos, and web content easily.
Open Source Alternative to:
Organize thousands of photos with ease
Stars
3,866Last commit
4 days agoLicense
GPL-2.0
Open source photo management software for organizing, sharing and managing large photo libraries. Perfect for teams, organizations and individuals.
Open Source Alternative to:
Stripe payments, usage tracking, and paywalls in 3 functions
Stars
2,790Last commit
5 hours agoLicense
Apache-2.0
Simplify Stripe integration for AI startups with 3 functions, 0 webhooks. Build pricing plans in 30 minutes with usage tracking, credits, and feature controls.
Open Source Alternative to:
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Stellar Hosted – Managed Open Source software hosting in the EU: secure, compliant, fast.
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