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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Self-hosted cloud platform with automated security
Stars
6,201Last commit
1 day agoLicense
Unknown
Complete self-hosting solution with automated maintenance, Smart-Shield protection, anti-DDoS, SSO authentication, and VPN access for secure private cloud management.
Open Source Alternative to:
Open-source BI for modern data teams
Stars
6,230Last commit
5 hours agoLicense
MIT
Self-serve analytics platform that transforms dbt models into interactive dashboards, enabling data-driven decisions across organizations.
Open Source Alternative to:
AI-powered embedded AR/AP automation for platforms
Stars
8,366Last commit
2 years agoLicense
AGPL-3.0
Crater offers AI-driven invoicing workflows, payments, and working capital tools to enhance your platform with minimal technical effort.
Open Source Alternative to:
Self-hosted group chat without recurring subscription fees
Stars
4,831Last commit
6 hours agoLicense
MIT
Install your own group chat system with @mentions, DMs, and mobile support. One-time purchase, no monthly fees. Includes full source code for customization.
Open Source Alternative to:
Clean your system and free disk space
Stars
Stars growing over the last 30 days7,479Last commit
1 day agoLicense
GPL-3.0
BleachBit frees disk space & protects privacy by deleting cache, cookies, history & temp files from Firefox, Chrome & more. Open source for Linux/Windows.
Open Source Alternative to:
The open-source, affordable email platform
Stars
5,605Last commit
15 hours agoLicense
AGPL-3.0
Plunk unifies marketing, transactional, and broadcast emails into a single, complete solution for businesses of all sizes.
Open Source Alternative to:
Smart desktop AI assistant with powerful local knowledge features
Stars
5,369Last commit
9 days agoLicense
Unknown
Cross-platform desktop AI assistant supporting multiple providers, local knowledge base, and custom prompts. Integrates MCP protocol for enhanced AI tool capabilities.
Open Source Alternative to:
Organize, collaborate, and conquer your tasks
Stars
Stars growing over the last 30 days6,041Last commit
8 hours agoLicense
AGPL-3.0
A powerful, open-source task management platform for teams and individuals, offering customizable workflows and seamless integration.
Open Source Alternative to:
Enterprise monitoring for networks, apps, and infrastructure
Stars
6,568Last commit
6 hours agoLicense
AGPL-3.0
Monitors networks, servers, cloud services, IoT, and OT environments with no per-device licensing fees, available self-hosted or as a managed SaaS platform.
Open Source Alternative to:
Self-hosted Git forge that's lightweight and secure
Stars
Stars growing over the last 30 days5,823Last commit
10 hours agoLicense
Unknown
Self-hosted software forge offering GitHub-like features with minimal resources. Easy installation, low maintenance, and 100% free software for secure project management.
Open Source Alternative to:
Intercept, modify, and debug HTTP(S) requests effortlessly
Stars
6,766Last commit
15 hours agoLicense
AGPL-3.0
A powerful browser extension and desktop app for developers to manipulate network requests, debug APIs, and improve web app testing
Open Source Alternative to:
Free, cross-platform video editor that's easy to learn
Stars
6,779Last commit
7 hours agoLicense
GPL-3.0
A free, open-source video editor for Linux, Mac, and Windows with animation, effects, multi-track editing, and 3D title rendering.
Open Source Alternative to:
Lightweight self-hosted bookkeeping with AI receipt scanning
Stars
Stars growing over the last 30 days6,068Last commit
10 hours agoLicense
MIT
A privacy-first personal finance app with two-level accounts, multi-currency support, AI receipt recognition, and broad data import from formats like GnuCash and Firefly III.
Open Source Alternative to:
Open source cloud infrastructure trusted at massive scale
Stars
6,077Last commit
6 hours agoLicense
Apache-2.0
OpenStack manages compute, storage, and networking across VMs, bare metal, and containers via APIs or a dashboard. Trusted by Walmart, China Mobile, and more.
Open Source Alternative to:
Secure, scalable API key management for developers
Stars
5,482Last commit
5 days agoLicense
AGPL-3.0
Streamline API authentication with UnKey's powerful, developer-friendly platform for creating, revoking, and monitoring API keys.
Open Source Alternative to:
Secure, encrypted notes for your digital life
Stars
6,716Last commit
1 day agoLicense
AGPL-3.0
Cross-platform note-taking app with end-to-end encryption, offline access, and powerful organization features for privacy-conscious users.
Open Source Alternative to:
Distributed OLAP database for real-time analytics at scale
Stars
6,176Last commit
9 hours agoLicense
Apache-2.0
Sub-second SQL queries on fresh streaming data at petabyte scale, built for high-concurrency user-facing apps and AI agent backends.
Open Source Alternative to:
Build scalable authorization in minutes, not months
Stars
5,972Last commit
1 day agoLicense
AGPL-3.0
Open-source authorization service for implementing fine-grained access controls. Centralized, scalable solution supporting RBAC, ABAC and ReBAC with Google Zanzibar-inspired architecture.
Open Source Alternative to:
Own your data with open-source personal cloud OS
Stars
5,361Last commit
6 hours agoLicense
AGPL-3.0
Self-hosted personal AI cloud operating system that puts you in control of your data. Deploy apps, run AI tools locally, and access everything from anywhere.
Open Source Alternative to:
Effortless event-driven workflows for modern applications
Stars
6,034Last commit
5 hours agoLicense
SSPL-1.0
Simplify backend processes with event-driven functions, seamless integrations, and powerful debugging tools for developers.
Open Source Alternative to:
Continuous web-based localization for global reach
Stars
6,167Last commit
6 hours agoLicense
GPL-3.0
Web-based continuous localization platform with version control integration, quality checks, and clean interface. Used by 2,500+ projects in 165+ countries.
Open Source Alternative to:
Build, automate, and improve AI agents with your team
Stars
4,906Last commit
10 hours agoLicense
MIT
Open-source workspace for building and running AI agents: chat-driven development, scheduling, human-in-the-loop approvals, versioning, and tracing. Self-host or use the cloud.
Open Source Alternative to:
Open-source CRM that puts simplicity and control first
Stars
Stars growing over the last 30 days3,971Last commit
8 hours agoLicense
AGPL-3.0
A flexible and customizable CRM platform for managing contacts, deals, and customer relationships without the complexity or user-based pricing of traditional solutions.
Open Source Alternative to:
Professional image editing without the price tag
Stars
6,584Last commit
5 hours agoLicense
Unknown
Free, open-source image editor with professional tools for photo manipulation, digital art creation, and graphic design. Cross-platform support.
Open Source Alternative to:
Deploy a professional status page in minutes, no coding required
Stars
5,245Last commit
5 days agoLicense
MIT
Free, open-source status page and uptime monitor with Docker deployment. Track 11 service types, manage incidents, schedule maintenance, and notify subscribers instantly.
Open Source Alternative to:
Pay per email sent, not for contact storage
Stars
4,804Last commit
1 day agoLicense
AGPL-3.0
Open source email platform for transactional and marketing emails. Self-host or use cloud service with transparent pricing - pay only for emails sent.
Open Source Alternative to:
Privacy-focused analytics without the complexity
Stars
8,035Last commit
8 months agoLicense
MIT
A simple, privacy-first analytics platform that provides valuable website insights without compromising visitor data or requiring cookie consent banners.
Open Source Alternative to:
Simulation-based testing and evaluation for AI agents
Stars
5,029Last commit
6 hours agoLicense
Apache-2.0
Tests AI agents through multi-turn simulations, LLM-based scoring, and production tracing so teams can ship reliable agents with confidence.
Open Source Alternative to:
Secure password management for teams
Stars
6,237Last commit
2 days agoLicense
AGPL-3.0
Open source password manager focused on security, collaboration and privacy for organizations
Open Source Alternative to:
Full observability for AI agents in production
Stars
4,753Last commit
5 days agoLicense
MIT
Open-source platform for monitoring AI agents: captures traces, surfaces failure patterns, alerts on issues, and helps you verify fixes with automated evals.
Open Source Alternative to:
Enterprise workplace AI with data you own and control
Stars
Stars growing over the last 30 days4,106Last commit
6 hours agoLicense
Apache-2.0
Self-hostable enterprise AI platform that unifies business data across apps, powers a knowledge graph for cited answers, and lets teams build AI agents across their stack.
Open Source Alternative to:
Powerful helpdesk solution for streamlined customer service
Stars
6,114Last commit
9 hours agoLicense
AGPL-3.0
Zammad is an open-source helpdesk software that centralizes customer communications and helps deliver great service experiences efficiently.
Open Source Alternative to:
Build reliable AI agents with unified tool integration
Stars
4,936Last commit
12 days agoLicense
Apache-2.0
Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server
Open Source Alternative to:
Open source modular logistics platform for faster app development
Stars
Stars growing over the last 30 days4,637Last commit
5 days agoLicense
AGPL-3.0
Fleetbase is a comprehensive open source logistics suite offering API, TMS, driver and customer apps for streamlined operations and development.
Open Source Alternative to:
Terraform automation with pull request workflows
Stars
5,072Last commit
14 days agoLicense
MIT
Open-source CI/CD orchestrator for Terraform with pull request automation, drift detection, and enterprise-grade security. Self-hostable with private runners.
Open Source Alternative to:
Deploy apps instantly with git push - open source alternative
Stars
4,832Last commit
12 days agoLicense
MIT
Open source deployment platform that deploys apps directly from GitHub with zero-downtime, real-time logs, preview URLs, and support for Python, Node.js frameworks.
Open Source Alternative to:
Flexible eCommerce platform for brands that stand out
Stars
5,350Last commit
1 day agoLicense
BSD-3-Clause
Open-source eCommerce platform offering customization, scalability and enterprise-grade features for brands of all sizes
Open Source Alternative to:
Professional video editing without the price tag
Stars
Stars growing over the last 30 days6,102Last commit
11 hours agoLicense
GPL-3.0
Cross-platform non-linear video editor offering professional features for free. Edit videos on Linux, Windows, macOS, and BSD with advanced tools and effects.
Open Source Alternative to:
Comprehensive analytics for data-driven decisions
Stars
5,930Last commit
8 hours agoLicense
Other
All-in-one analytics platform for mobile, web, and desktop apps. Track user behavior, monitor performance, and optimize your product.
Open Source Alternative to:
Privacy-first browser built for power users
Stars
6,378Last commit
7 days agoLicense
Unknown
Firefox-based browser with built-in ad blocking, oblivious DNS, zero telemetry, tree-style tabs, and no AI features sending your data anywhere.
Open Source Alternative to:
Navigate anywhere with detailed offline maps and GPS
Stars
6,141Last commit
5 hours agoLicense
Unknown
Comprehensive offline navigation app with detailed maps, turn-by-turn guidance, and specialized routing for hiking, cycling, and walking worldwide.
Open Source Alternative to:
Spreadsheet-like interface for PostgreSQL databases
Stars
5,178Last commit
1 day agoLicense
GPL-3.0
A self-hosted tool that provides an intuitive, spreadsheet-style interface for viewing, editing, and querying PostgreSQL databases without technical expertise.
Open Source Alternative to:
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c15t – Open-source cookie banner, built for control and lightening fast modern web apps.
InfluxDB
Sent
Postiz