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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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Favicon of Midori Browser

Midori Browser

Fast, secure, and privacy-focused web browsing

  • Stars

    390

  • Last commit

    3 days 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 Lua.sh

Lua.sh

Professional link management for modern teams

  • Stars

    340

  • Last commit

    18 hours 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 dDocs

dDocs

End-to-end encrypted collaborative document editor

  • Stars

    403

  • Last commit

    9 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 ClearFlask

ClearFlask

Open-source ideation tool for product feedback management

  • Stars

    451

  • Last commit

    5 days 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 Convertigo

Convertigo

Low-code and no-code platform for business apps

  • Stars

    384

  • Last commit

    23 hours ago

  • License

    Unknown
Full-stack open source platform combining no-code and low-code studios to build, deploy, and integrate web, mobile, and desktop business applications.

Open Source Alternative to:

Favicon of Retool
Retool
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 Hackatime

Hackatime

Track coding time across 70+ editors, completely free

  • Stars

    201

  • Last commit

    8 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

    396

  • Last commit

    16 hours 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 Impler

Impler

Seamless data import for your applications

  • Stars

    290

  • Last commit

    7 days ago

  • License

    MIT
Open-source solution for effortless data importing, mapping, and validation in web applications
Favicon of Orbital

Orbital

Connect APIs, databases, and streams without glue code

  • Stars

    360

  • Last commit

    3 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

    335

  • 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

    257

  • Last commit

    8 hours 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
Favicon of Roomote

Roomote

AI
Self-hosted AI coding agent that opens real PRs

  • Stars

    226

  • Last commit

    9 hours ago

  • License

    FCL-1.0
Source-available, self-hosted AI coding agent that connects to your repo, tools, and chat to investigate issues and open reviewable PRs on your own infrastructure.

Open Source Alternative to:

Favicon of Codex
Codex
Favicon of Darkwrite

Darkwrite

Distraction-free note-taking with powerful features

  • Stars

    314

  • Last commit

    23 hours ago

  • License

    AGPL-3.0
A customizable, offline-first note editor that lets you format text, create lists, add images, and export to HTML - all while maintaining your privacy.

Open Source Alternative to:

Favicon of Notion
Notion
Favicon of Capgo

Capgo

OTA updates for Capacitor apps without app store delays

  • Stars

    205

  • Last commit

    10 hours ago

  • License

    AGPL-3.0
Live update platform for Ionic and Capacitor apps that pushes JavaScript, CSS, and asset changes to devices in minutes, with channels, rollback, and release analytics.

Open Source Alternative to:

Favicon of Capawesome
Capawesome
Favicon of Bookmark It

Bookmark It

Organize, discover, and personalize your bookmarks

  • Stars

    325

  • Last commit

    4 months ago

  • License

    AGPL-3.0
Open-source bookmark manager with timeline view, one-click saving, categorization, and sharing features. Free plan available with pro upgrades.

Open Source Alternative to:

Favicon of Pocket
Pocket
Favicon of Procaptcha

Procaptcha

Decentralized CAPTCHA for enhanced web security

  • Stars

    299

  • Last commit

    7 hours ago

  • License

    Apache-2.0
A blockchain-based CAPTCHA solution offering improved security, user experience, and resistance to bot attacks for web applications.

Open Source Alternative to:

Favicon of reCAPTCHA
reCAPTCHA
Favicon of Firefiles

Firefiles

Bring your own cloud storage, managed in one place

  • Stars

    371

  • Last commit

    10 months ago

  • License

    AGPL-3.0
Firefiles turns S3 buckets and other cloud backends into a unified file manager with browser-based previews, multi-drive support, and a clean light/dark interface.

Open Source Alternative to:

Favicon of Google Drive
Google Drive
Favicon of Changes.Page

Changes.Page

Effortless changelog creation for open-source projects

  • Stars

    284

  • Last commit

    18 days ago

  • License

    AGPL-3.0
Automate and simplify changelog generation from Git commits, ensuring clear and consistent project documentation.

Open Source Alternative to:

Favicon of ProductBoard
ProductBoard
Favicon of ShipShipShip

ShipShipShip

Open-source changelog & roadmap platform for teams

  • Stars

    299

  • Last commit

    7 months ago

  • License

    Apache-2.0
Self-hostable changelog and roadmap platform with community voting, automated newsletters, and kanban boards. Deploy with Docker in minutes.

Open Source Alternative to:

Favicon of Featurebase
Featurebase
Favicon of Ziit

Ziit

Track coding time and boost developer productivity

  • Stars

    252

  • Last commit

    17 days ago

  • License

    AGPL-3.0
Monitor your coding sessions, analyze productivity patterns, and gain insights into your development workflow with comprehensive time tracking statistics.

Open Source Alternative to:

Favicon of WakaTime
WakaTime
Favicon of 0 Finance

0 Finance

AI
Transform idle cash into competitive yield for startups

  • Stars

    249

  • Last commit

    5 months ago

  • License

    MIT
High-yield treasury management for startups earning 8% APY with insurance coverage up to $1M. Open US/EU accounts instantly with full liquidity and no minimums.
Favicon of Zenblog

Zenblog

Effortless blogging for developers and tech enthusiasts

  • Stars

    253

  • Last commit

    7 days ago

  • License

    AGPL-3.0
A minimalist, markdown-based blogging platform designed for developers, featuring syntax highlighting and seamless Git integration.

Open Source Alternative to:

Favicon of WordPress
WordPress
Favicon of UniBee

UniBee

Cut billing costs with open-source subscription management

  • Stars

    230

  • Last commit

    7 months ago

  • License

    AGPL-3.0
Replace expensive billing solutions with open-source software. Automate subscriptions, accept multiple payments including crypto, and gain real-time revenue insights.

Open Source Alternative to:

Favicon of Stripe Billing
Stripe Billing
Favicon of Pagecord

Pagecord

Personal blogging platform that meets you where you write

  • Stars

    188

  • Last commit

    7 hours ago

  • License

    MIT
Publish blog posts by email, from Obsidian, iA Writer, the web editor, CLI, or API. Includes RSS, email subscribers, analytics, custom domains, and full export.

Open Source Alternative to:

Favicon of WordPress
WordPress
Favicon of Private Captcha

Private Captcha

GDPR-compliant bot protection without user friction

  • Stars

    193

  • Last commit

    11 hours ago

  • License

    Unknown
Privacy-first CAPTCHA service that blocks bots while keeping forms accessible. No puzzles, no tracking, no cookies - just invisible cryptographic protection.

Open Source Alternative to:

Favicon of reCAPTCHA
reCAPTCHA
Favicon of OpenPolicy

OpenPolicy

Generate legal policies directly from TypeScript code

  • Stars

    163

  • Last commit

    2 days ago

  • License

    Apache-2.0
Open-source policy-as-code framework that lets developers create privacy policies, terms of service, and legal agreements using TypeScript with built-in GDPR/CCPA compliance.

Open Source Alternative to:

Favicon of Termly
Termly
Favicon of Betterlytics

Betterlytics

Privacy-first, cookieless analytics without consent banners

  • Stars

    176

  • Last commit

    22 hours ago

  • License

    AGPL-3.0
GDPR-compliant web analytics with real-time insights, session replay, and funnel tracking. No cookies, no tracking, no consent banners required.

Open Source Alternative to:

Favicon of Google Analytics
Google Analytics
Favicon of Wraft

Wraft

Scale document creation with automated workflows

  • Stars

    164

  • Last commit

    2 months ago

  • License

    AGPL-3.0
Complete document lifecycle management with automated generation, approval workflows, e-signatures, and branded templates. Create professional documents at scale.

Open Source Alternative to:

Favicon of DocuSign
DocuSign
Favicon of Orgnise

Orgnise

Effortlessly manage tasks, projects, and teams

  • Stars

    247

  • Last commit

    1 year ago

  • License

    AGPL-3.0
A versatile project management platform that combines task organization, team collaboration, and workflow automation in one intuitive interface.

Open Source Alternative to:

Favicon of Notion
Notion
Favicon of Spinifex

Spinifex

AWS-compatible cloud APIs on infrastructure you control

  • Stars

    159

  • Last commit

    8 hours ago

  • License

    AGPL-3.0
Spinifex recreates EC2, S3, EBS, VPC, IAM, and more on your own hardware, so AWS-built software runs unchanged without touching a hyperscaler.

Open Source Alternative to:

Favicon of Amazon Web Services
Amazon Web Services
Favicon of OpenNotas

OpenNotas

Fast, secure, and free personal note-taking app

  • Stars

    178

  • Last commit

    1 month ago

  • License

    Unknown
OpenNotas is a multi-platform, end-to-end encrypted note-taking app that offers simplicity, synchronization, and offline functionality.

Open Source Alternative to:

Favicon of Obsidian
Obsidian
Favicon of Windshift

Windshift

Self-hosted project management with boards and test tracking

  • Stars

    144

  • Last commit

    9 hours ago

  • License

    AGPL-3.0
Self-hosted, open-source project management tool with boards, milestones, portals, time tracking, and test management on your own infrastructure.

Open Source Alternative to:

Favicon of Linear
Linear
Favicon of Twake Chat

Twake Chat

Secure open source messaging for professional teams

  • Stars

    165

  • Last commit

    8 hours ago

  • License

    AGPL-3.0
Free Matrix-based messenger with end-to-end encryption, multi-platform bridges, and on-premise deployment. Connect across 30+ networks securely.

Open Source Alternative to:

Favicon of Slack
Slack
Favicon of SAMA

SAMA

Secure, scalable chat server for modern applications

  • Stars

    158

  • Last commit

    11 days ago

  • License

    GPL-3.0
Open source chat server with end-to-end encryption, clustering support, and comprehensive messaging features for building real-time communication apps

Open Source Alternative to:

Favicon of Discord
Discord
Favicon of Werbot

Werbot

Secure, scalable server access management for DevOps

  • Stars

    169

  • Last commit

    1 month ago

  • License

    BUSL-1.1
Centralized platform for managing SSH access, enhancing security, and streamlining server administration for DevOps teams.
Favicon of Formizee

Formizee

Create and manage forms with ease

  • Stars

    183

  • Last commit

    1 year ago

  • License

    Apache-2.0
Formizee is an open-source platform for designing, building, and analyzing forms, offering an affordable all-in-one solution

Open Source Alternative to:

Favicon of Google Forms
Google Forms
Favicon of Comma

Comma

Launch your personal website in minutes, no coding required

  • Stars

    227

  • Last commit

    4 months ago

  • License

    AGPL-3.0
Free site builder to create a personal website with articles, projects, email capture, and analytics. Open source, fast, and beautifully designed.

Open Source Alternative to:

Favicon of WordPress
WordPress
Favicon of Abby

Abby

Type-safe feature flags and remote config for developers

  • Stars

    166

  • Last commit

    1 year ago

  • License

    AGPL-3.0
Abby offers open-source, fully typed feature flagging and remote configuration for React and Next.js, with multi-environment testing and debugging tools.

Open Source Alternative to:

Favicon of LaunchDarkly
LaunchDarkly
Favicon of xyd

xyd

Transform documentation with developer-focused simplicity

  • Stars

    113

  • Last commit

    4 days ago

  • License

    MIT
Create powerful, interactive documentation with hot reloading, TypeScript support, custom components, and built-in API docs generation.

Open Source Alternative to:

Favicon of Mintlify
Mintlify
Favicon of UserTourKit

UserTourKit

Lightweight, accessible product tours built for React developers

  • Stars

    66

  • Last commit

    7 hours ago

  • License

    MIT
Headless React tour library with WCAG 2.1 AA accessibility, TypeScript support, and pre-styled components. Under 8KB gzipped with full customization control.

Open Source Alternative to:

Favicon of Userflow
Userflow
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