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 email API with enterprise deliverability
Stars
923Last commit
15 hours agoLicense
AGPL-3.0
Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.
Open Source Alternative to:
Fast, secure browsing with powerful organization features
Stars
1,102Last commit
6 months agoLicense
GPL-3.0
A modern browser combining minimalist design with smart features like profiles, spaces, and command palette. Full Chrome extension support and privacy-focused browsing.
Open Source Alternative to:
Agile project management for cross-functional teams
Stars
857Last commit
11 days agoLicense
MPL-2.0
Self-hostable agile project management tool with Kanban and Scrum boards, sprint planning, issue tracking, and reporting for teams of any size.
Open Source Alternative to:
AI assistant that searches and answers across all your work tools
Stars
823Last commit
4 days agoLicense
Apache-2.0
Open-source AI assistant connecting 15+ work tools with instant answers, code execution, and task automation. Self-hosted on your infrastructure with full permission inheritance.
Open Source Alternative to:
Secure, deploy, and manage application secrets effortlessly
Stars
949Last commit
15 hours agoLicense
MIT
Open source platform for engineering teams to manage secrets and environment variables from development to production, with powerful integrations.
Open Source Alternative to:
Offline voice dictation that types into any app
Stars
747Last commit
2 days agoLicense
AGPL-3.0
Dictate into any app on Mac or Windows using on-device AI models. One-time purchase, 99+ languages, no subscription required.
Open Source Alternative to:
Your personal workspace organizer for maximum productivity
Stars
1,032Last commit
6 months agoLicense
GPL-3.0
Organize projects, tasks, and resources in customizable workspaces. Boost productivity with a unified interface for all your work.
Open Source Alternative to:
Fast, minimal VPN built on modern cryptography
Stars
742Last commit
3 days agoLicense
GPL-2.0
VPN protocol that runs inside the Linux kernel, using public-key cryptography to create encrypted tunnels across UDP with minimal configuration.
Open Source Alternative to:
Dictate faster and control your Mac with voice
Stars
Stars growing over the last 30 days673Last commit
2 months agoLicense
MIT
Free, open-source macOS voice assistant that transcribes speech, applies AI transformations, and controls apps hands-free. No subscription, no training required.
Open Source Alternative to:
A delightfully rich and dynamic link-in-bio.
Stars
799Last commit
25 days agoLicense
MIT
Build a dynamic link-in-bio page with a drag-and-drop editor. Integrate platforms to showcase live content and connect with your audience.
Open Source Alternative to:
Simplify server management with an intuitive interface
Stars
773Last commit
6 hours agoLicense
MIT
A user-friendly, open-source control panel for effortless server administration, designed for both beginners and experts.
Open Source Alternative to:
TypeScript framework for building autonomous AI agents
Stars
688Last commit
5 hours agoLicense
Apache-2.0
Open-source TypeScript runtime for autonomous AI agents with cognitive memory, multi-agent orchestration, runtime tool generation, and support for 21 LLM providers.
Privacy-focused translation with offline capabilities
Stars
1,084Last commit
2 months agoLicense
BSD-3-Clause
Full-featured browser extension for translating web pages, text, and subtitles with offline mode, personal dictionary, and custom translator support.
Open Source Alternative to:
Secure open source file storage with end-to-end encryption
Stars
996Last commit
10 hours agoLicense
AGPL-3.0
Open source encrypted data storage solution offering secure file sharing, collaboration tools, and on-premises deployment for professional teams.
Open Source Alternative to:
Visual regression testing made effortless
Stars
1,678Last commit
7 months agoLicense
MIT
Automated visual testing tool that detects UI changes, ensures consistency, and accelerates development workflows.
Open Source Alternative to:
Revolutionizing data processing with Compute Over Data
Stars
877Last commit
6 days agoLicense
Apache-2.0
Bacalhau is an open-source platform for fast, cost-effective, and secure distributed computing, seamlessly integrating with Docker and WebAssembly workflows.
Free open-source control panel for VPS and dedicated servers
Stars
Stars declining quickly over the last 30 days748Last commit
18 days agoLicense
MIT
Self-hosted alternative to cPanel and Plesk. Manage websites, databases, SSL certificates, and server resources with an intuitive interface. No license fees.
Open Source Alternative to:
Low-latency code-pairing made by developers
Stars
Stars growing over the last 30 days739Last commit
4 days agoLicense
AGPL-3.0
Open-source remote pair programming tool with HD screen sharing, noise-cancelling audio and low-latency remote control. Built specifically for developers.
Open Source Alternative to:
Team chat with native GitHub and Linear integrations
Stars
736Last commit
1 day agoLicense
FSL-1.1-ALv2
Team chat for developers with threads, full-text search, keyboard-first navigation, GitHub and Linear previews, desktop apps, and message sync with Slack and Discord.
Open Source Alternative to:
AI-native support infrastructure for modern SaaS
Stars
740Last commit
2 months agoLicense
AGPL-3.0
Open-source support platform combining AI and human agents. React components with shadcn/ui design philosophy, styled with Tailwind CSS for NextJS apps.
Open Source Alternative to:
AI coding agent that sees your live app and edits code
Stars
723Last commit
5 hours agoLicense
Apache-2.0
Open-source AI coding agent that runs in your browser, sees your live DOM and app state, and makes real code edits from plain English descriptions.
Open Source Alternative to:
Persistent cloud VMs that hibernate and wake in seconds
Stars
Stars growing over the last 30 days599Last commit
7 hours agoLicense
Apache-2.0
Provides always-on virtual machines for AI agents with full OS access, persistent state, elastic CPU/memory resizing, and instant checkpoints.
Open Source Alternative to:
Fast, secure, offline API client for REST and gRPC
Stars
732Last commit
9 days agoLicense
BSD-3-Clause
Cross-platform API client offering fast, secure, and offline testing for REST and gRPC services. Available on macOS, Windows, and Linux with intuitive design.
Open Source Alternative to:
Self-hosted AI visibility tracking for your brand
Stars
Stars growing quickly over the last 30 days598Last commit
21 hours agoLicense
MIT
Tracks how ChatGPT, Gemini, Claude, Perplexity, and other AI engines mention your brand, which competitors appear, and which sources get cited.
Open Source Alternative to:
Feature management with GitOps for developers
Stars
815Last commit
9 days agoLicense
MIT
Featurevisor is an open-source tool for managing feature flags, experiments, and remote configuration directly from your Git repository.
Open Source Alternative to:
Beautiful Kanban boards with seamless payment integration
Stars
662Last commit
3 months agoLicense
MIT
Organize projects with intuitive Kanban boards, powered by Supabase backend and Stripe payment processing for complete project management workflow.
Open Source Alternative to:
Visual website builder and CMS you can self-host
Stars
Stars growing over the last 30 days338Last commit
7 hours agoLicense
MIT
Build, manage, and host custom websites with a visual drag-and-drop builder and CMS. Self-host free or use managed cloud hosting.
Open Source Alternative to:
Self-hosted time tracking with complete data control
Stars
642Last commit
9 hours agoLicense
GPL-3.0
Free open-source time tracking software with 120+ features. Track time, manage projects, generate invoices. Complete data control with Docker deployment.
Open Source Alternative to:
Self-hosted screen recording for seamless collaboration
Stars
1,014Last commit
2 years agoLicense
AGPL-3.0
Effortlessly create, share, and collaborate with screen recordings. Control your data with self-hosting or our secure cloud option.
Open Source Alternative to:
Build complete web apps with integrated graph database
Stars
830Last commit
3 days agoLicense
Unknown
Open-source low-code platform combining Neo4j graph database, visual schema editor, automatic REST APIs, and page rendering in one self-hosted environment.
Track games, movies, anime, manga, and books in one place
Stars
Stars growing over the last 30 days606Last commit
7 hours agoLicense
MIT
Cross-platform collection manager for retro games, movies, TV shows, anime, manga, visual novels, and books with tier lists, visual boards, and import/export.
Open Source Alternative to:
Your content engine for growing on Twitter at scale
Stars
775Last commit
11 months agoLicense
AGPL-3.0
Create, schedule & manage Twitter content at scale with AI assistance, beautiful visuals, and multi-account support. Perfect for busy founders.
Open Source Alternative to:
Real-time fraud detection and AML compliance engine
Stars
624Last commit
10 days agoLicense
Elastic-2.0
An open-source platform that enables fintech companies to monitor transactions and user activity, detect suspicious behaviors, and automate fraud prevention in real-time.
Open Source Alternative to:
Monitor, manage, and communicate service status effortlessly
Stars
990Last commit
2 years agoLicense
MIT
A powerful open-source status page system for real-time incident tracking, maintenance updates, and transparent communication with users.
Open Source Alternative to:
Take control of your finances, paycheck by paycheck
Stars
693Last commit
5 hours agoLicense
FSL-1.1-MIT
Manage your money confidently with monetr, putting aside what you need and spending what you want
Open Source Alternative to:
Build and deploy AI agents through visual workflows
Stars
559Last commit
2 days agoLicense
Apache-2.0
Create powerful AI agents using an intuitive node-based interface that connects multiple LLMs and data sources for automated documentation and development workflows.
Open Source Alternative to:
S3-compatible object storage built with Swift
Stars
Stars growing over the last 30 days583Last commit
2 months agoLicense
Apache-2.0
Self-hostable, Apache 2.0-licensed object storage with S3 compatibility, a built-in web console, and horizontal scaling from single node to sharded cluster.
Open Source Alternative to:
Open source company management for high-performance startups
Stars
Stars growing over the last 30 days620Last commit
5 hours agoLicense
Apache-2.0
Operately is an open source platform that centralizes projects, goals, and processes, helping startups run efficiently without a COO.
Open Source Alternative to:
Open-source AI browser for intelligent web automation
Stars
513Last commit
7 hours agoLicense
BSD-3-Clause
Privacy-focused AI browser with intelligent agents for research, analysis, and workflow automation. Features unified memory, compliance guardrails, and seamless integrations.
Open Source Alternative to:
Complete password control, zero cloud dependency
Stars
542Last commit
3 months agoLicense
Apache-2.0
Open-source password manager with peer-to-peer syncing, local storage, and end-to-end encryption. No cloud servers, complete privacy control across devices.
Open Source Alternative to:
Secure open source email with advanced encryption & AI
Stars
667Last commit
12 hours agoLicense
AGPL-3.0
Open source professional email solution with PGP encryption, JMAP protocol, AI-powered responses, and advanced antispam protection. Control your data privately.
Open Source Alternative to:
Messaging SDK with AI agents for web, iOS, and Android
Stars
553Last commit
2 days agoLicense
Apache-2.0
Build branded chat apps with AI agents, group messaging, document exchange, and digital wallets using React and React Native components.
Open Source Alternative to:
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Postiz – The All-in-One agentic social media scheduling tool
Openlane
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