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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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CodeRabbit
Favicon of Structr

Structr

Build complete web apps with integrated graph database

  • Stars

    828

  • Last commit

    19 days ago

  • License

    Unknown
Open-source low-code platform combining Neo4j graph database, visual schema editor, automatic REST APIs, and page rendering in one self-hosted environment.
Favicon of Contentport

Contentport

Your content engine for growing on Twitter at scale

  • Stars

    764

  • Last commit

    9 months ago

  • License

    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:

Favicon of Post Bridge
Post Bridge
Favicon of Statusnook

Statusnook

Monitor, manage, and communicate service status effortlessly

  • Stars

    975

  • Last commit

    2 years ago

  • License

    MIT
A powerful open-source status page system for real-time incident tracking, maintenance updates, and transparent communication with users.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of Monetr

Monetr

Take control of your finances, paycheck by paycheck

  • Stars

    679

  • Last commit

    9 hours ago

  • License

    FSL-1.1-MIT
Manage your money confidently with monetr, putting aside what you need and spending what you want

Open Source Alternative to:

Favicon of Quickbooks
Quickbooks
Favicon of PearPass

PearPass

Complete password control, zero cloud dependency

  • Stars

    532

  • Last commit

    15 days ago

  • License

    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:

Favicon of LastPass
LastPass
Favicon of OpenComputer

OpenComputer

AI
Persistent cloud VMs that hibernate and wake in seconds

  • Stars

    503

  • Last commit

    1 day ago

  • License

    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:

Favicon of Daytona
Daytona
Favicon of Marble

Marble

Real-time fraud detection and AML compliance engine

  • Stars

    588

  • Last commit

    5 days ago

  • License

    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:

Favicon of Seon
Seon
Favicon of Ycode

Ycode

Visual website builder and CMS you can self-host

  • Stars

    287

  • Last commit

    1 day ago

  • License

    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:

Favicon of Framer
Framer
Favicon of Giselle

Giselle

AI
Build and deploy AI agents through visual workflows

  • Stars

    553

  • Last commit

    26 days ago

  • License

    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.
Favicon of Tonkatsu Box

Tonkatsu Box

Track games, movies, anime, manga, and books in one place

  • Stars

    518

  • Last commit

    9 days ago

  • License

    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:

Favicon of TV Time
TV Time
Favicon of Alarik

Alarik

S3-compatible object storage built with Swift

  • Stars

    519

  • Last commit

    10 days ago

  • License

    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:

Favicon of Amazon S3
Amazon S3
Favicon of Twake Mail

Twake Mail

Secure open source email with advanced encryption & AI

  • Stars

    649

  • Last commit

    20 hours ago

  • License

    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:

Favicon of Gmail
Gmail
Favicon of Ethora

Ethora

Messaging SDK with AI agents for web, iOS, and Android

  • Stars

    544

  • Last commit

    13 hours ago

  • License

    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:

Favicon of Stream
Stream
Favicon of Operately

Operately

Open source company management for high-performance startups

  • Stars

    545

  • Last commit

    10 hours ago

  • License

    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:

Favicon of Linear
Linear
Favicon of Ever Teams

Ever Teams

Real-time work and project management platform

  • Stars

    545

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Ever Teams offers an all-in-one solution for work management, time tracking, and team collaboration with integrations for popular tools.

Open Source Alternative to:

Favicon of Linear
Linear
Favicon of Browser Operator

Browser Operator

AI
Open-source AI browser for intelligent web automation

  • Stars

    501

  • Last commit

    5 months ago

  • License

    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:

Favicon of Comet Browser
Comet Browser
Favicon of Typemill

Typemill

Open-source CMS for text-driven websites

  • Stars

    615

  • Last commit

    5 days ago

  • License

    MIT
Create manuals, documentation, and websites with this markdown-based content management system, with options for ebook conversion.

Open Source Alternative to:

Favicon of Confluence
Confluence
Favicon of Argos

Argos

Visual regression testing for seamless UI development

  • Stars

    616

  • Last commit

    6 hours ago

  • License

    MIT
Automate visual testing, catch UI bugs early, and collaborate effortlessly with your team to maintain pixel-perfect interfaces.

Open Source Alternative to:

Favicon of Chromatic
Chromatic
Favicon of Nordcraft

Nordcraft

Craft AAA web apps that delight your users

  • Stars

    487

  • Last commit

    1 day ago

  • License

    Apache-2.0
Visual web development engine combining design and development tools. Build immersive, interactive web experiences with component-based framework, real-time collaboration, and powerful visual editor.

Open Source Alternative to:

Favicon of Framer
Framer
Favicon of Formance

Formance

Open source financial infrastructure for modern businesses

  • Stars

    520

  • Last commit

    13 hours ago

  • License

    MIT
Build custom financial flows and integrate with any provider using Formance's agnostic platform

Open Source Alternative to:

Favicon of Stripe Billing
Stripe Billing
Favicon of Loops

Loops

Federated short videos without corporate control

  • Stars

    444

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Open-source, decentralized short-video platform that gives creators control. No ads, no lock-in, built on ActivityPub for true community ownership.

Open Source Alternative to:

Favicon of YouTube
YouTube
Favicon of Hive

Hive

Open-source GraphQL federation platform

  • Stars

    485

  • Last commit

    23 hours ago

  • License

    MIT
A fully open-source schema registry, analytics, and gateway for GraphQL federation and APIs

Open Source Alternative to:

Favicon of Apollo GraphQL
Apollo GraphQL
Favicon of Workbench

Workbench

Inspect, debug, and replay BullMQ queues visually

  • Stars

    432

  • Last commit

    3 months ago

  • License

    MIT
Desktop app and embeddable dashboard for BullMQ that shows live queue metrics, job runs, FlowProducer graphs, and scheduler status without touching Redis directly.

Open Source Alternative to:

Favicon of bull-board
bull-board
Favicon of Openinary

Openinary

Self-hostable image and video delivery with URL transforms

  • Stars

    386

  • Last commit

    18 hours ago

  • License

    AGPL-3.0
Upload, transform, and deliver images and videos via a REST API and URL parameters, using your own S3-compatible storage. Cloudinary-compatible syntax, no vendor lock-in.

Open Source Alternative to:

Favicon of Orange Logic
Orange Logic
Favicon of Shelve

Shelve

Simplify project management for developers

  • Stars

    451

  • Last commit

    12 days ago

  • License

    Apache-2.0
Shelve is a comprehensive project management tool designed to streamline workflows and enhance collaboration for developers and teams.

Open Source Alternative to:

Favicon of Keeper
Keeper
Favicon of Sigle

Sigle

Web3 writing platform for content creators and crypto enthusiasts

  • Stars

    490

  • Last commit

    7 days ago

  • License

    MIT
Sigle is a secure, open-source platform for Web3 writers to create, publish, and monetize content on the Bitcoin blockchain.

Open Source Alternative to:

Favicon of Substack
Substack
Favicon of VerifyWise

VerifyWise

AI
AI governance made simple, secure, and compliant

  • Stars

    341

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Open-source AI governance platform helping teams meet regulatory standards like EU AI Act and ISO 42001. Monitor model performance, manage risks, and maintain compliance with enterprise-grade security.

Open Source Alternative to:

Favicon of Vanta
Vanta
Favicon of Operational

Operational

Real-time event tracking and response for tech products

  • Stars

    476

  • Last commit

    1 month ago

  • License

    AGPL-3.0
Track critical events, receive instant notifications, and respond to product activities with customizable webhooks and action buttons

Open Source Alternative to:

Favicon of Opsgenie
Opsgenie
Favicon of Vemetric

Vemetric

Simple, powerful web & product analytics for user insights

  • Stars

    385

  • Last commit

    8 days ago

  • License

    AGPL-3.0
Privacy-focused analytics platform combining web and product insights. Track user journeys, create funnels, and understand behavior with GDPR compliance and no cookies by default.

Open Source Alternative to:

Favicon of Google Analytics
Google Analytics
Favicon of Marble CMS

Marble CMS

Simple content management for modern sites

  • Stars

    382

  • Last commit

    7 days ago

  • License

    AGPL-3.0
A headless CMS designed for blogs, changelogs, and articles. Features intuitive editor, team collaboration, media management, and API integration.

Open Source Alternative to:

Favicon of WordPress
WordPress
Favicon of Gravitee

Gravitee

Unified API, event, and AI agent management platform

  • Stars

    445

  • Last commit

    6 hours ago

  • License

    Apache-2.0
Full-lifecycle API management platform that unifies synchronous and asynchronous ecosystems. Manage APIs, event streams, and AI agents with enterprise security and 4x faster gateway performance.

Open Source Alternative to:

Favicon of Postman
Postman
Favicon of ClearFlask

ClearFlask

Open-source ideation tool for product feedback management

  • Stars

    451

  • Last commit

    17 hours ago

  • License

    Apache-2.0
ClearFlask is an open-source platform for collecting, analyzing, and acting on customer feedback to drive product development.

Open Source Alternative to:

Favicon of Featurebase
Featurebase
Favicon of Midori Browser

Midori Browser

Fast, secure, and privacy-focused web browsing

  • Stars

    384

  • Last commit

    12 hours ago

  • License

    MPL-2.0
Midori Browser is a lightweight, fast, and secure browser that protects users' privacy, available for Windows, Linux, and Android.

Open Source Alternative to:

Favicon of Firefox
Firefox
Favicon of dDocs

dDocs

End-to-end encrypted collaborative document editor

  • Stars

    398

  • Last commit

    22 hours ago

  • License

    AGPL-3.0
Write, organize, and collaborate in real-time with complete privacy and security. This app is an open-source, online/offline compatible, and AI-free alternative to Google Docs.

Open Source Alternative to:

Favicon of Microsoft Word
Microsoft Word
Favicon of Ikiform

Ikiform

Create stunning forms with AI-powered builder and analytics

  • Stars

    356

  • Last commit

    4 months ago

  • License

    MIT
Build beautiful, interactive forms with AI assistance. Open-source alternative to Google Forms with unlimited submissions, advanced analytics, and seamless integrations.

Open Source Alternative to:

Favicon of Google Forms
Google Forms
Favicon of Lua.sh

Lua.sh

Professional link management for modern teams

  • Stars

    338

  • Last commit

    5 months ago

  • License

    AGPL-3.0
Open-source platform for creating shortened URLs with advanced analytics, custom domains, and API integration for marketing and development teams.

Open Source Alternative to:

Favicon of TinyURL
TinyURL
Favicon of Hackatime

Hackatime

Track coding time across 70+ editors, completely free

  • Stars

    194

  • Last commit

    6 hours ago

  • License

    MIT
Free, open-source coding time tracker compatible with VS Code, JetBrains IDEs, vim, emacs and more. No limits, no paywalls - your data stays yours forever.

Open Source Alternative to:

Favicon of WakaTime
WakaTime
Favicon of Valour

Valour

Community-driven platform built for transparency

  • Stars

    393

  • Last commit

    3 days ago

  • License

    AGPL-3.0
Open-source communication platform with multi-window chat, economy systems, and privacy-first approach. Built by communities for superior performance.

Open Source Alternative to:

Favicon of Discord
Discord
Favicon of mlop

mlop

AI
Experiment tracking platform for ML teams

  • Stars

    392

  • Last commit

    6 months ago

  • License

    Apache-2.0
Open source ML experiment tracking platform with parameter and gradient logging, media tracking, real-time alerts, and full Weights & Biases API compatibility.

Open Source Alternative to:

Favicon of Weights and Biases
Weights and Biases
Favicon of Orbital

Orbital

Connect APIs, databases, and streams without glue code

  • Stars

    361

  • Last commit

    2 months ago

  • License

    Unknown
Automated data integration platform that connects APIs, databases, and event streams using semantic schemas. Deploy secure integrations in minutes with Git-based workflows.

Open Source Alternative to:

Favicon of Kong
Kong
Favicon of Storyden

Storyden

Build lasting communities with modern forum technology

  • Stars

    333

  • Last commit

    2 days ago

  • License

    MPL-2.0
Create permanent, discoverable communities with modern forum features. Combines discussion, curation, and wiki functionality in one platform.

Open Source Alternative to:

Favicon of Skool
Skool
Favicon of Stormkit

Stormkit

Deploy web apps with automated CI/CD and full infrastructure control

  • Stars

    255

  • Last commit

    1 day ago

  • License

    GPL-3.0
Self-hosted platform for web applications offering automated CI/CD pipelines, multiple environments, and Git integration - with 47% infrastructure cost savings.

Open Source Alternative to:

Favicon of Vercel
Vercel
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