10+ Best GPL-3.0 Licensed Open Source Software in 2026

NetData

Real-time monitoring for systems and applications

Stars
78,551
Forks
6,417
Last commit
8 hours ago

Powerful, efficient, and user-friendly monitoring solution for servers, containers, and applications with instant insights and alerts.

Open Source Alternative to:

DataDog

Paperless-home

Effortlessly organize your digital documents

Stars
39,714
Forks
2,567
Last commit
7 hours ago

A powerful open-source solution for managing, organizing, and searching your digital documents with ease and efficiency.

Open Source Alternative to:

Google Workspace

1Panel

Manage Linux servers with ease through a modern web interface

Stars
35,107
Forks
3,109
Last commit
2 hours ago

Comprehensive web-based tool for Linux server administration with integrated website, database, container, and LLM management capabilities.

Open Source Alternative to:

Plesk

ERPNext

Comprehensive business management, tailored for you

Stars
33,096
Forks
10,999
Last commit
2 hours ago

Open-source ERP solution offering modules for accounting, inventory, HR, CRM, and more. Customizable and scalable for businesses of all sizes.

Open Source Alternative to:

HubSpot

ShareX

Powerful screen capture and file sharing tool for Windows

Stars
36,210
Forks
3,647
Last commit
1 day ago

ShareX is a free, open-source program that captures or records any area of your screen and shares it with a single keypress, supporting various file types and destinations.

Open Source Alternative to:

Screen Studio

Hey

Decentralized social networking for the Web3 era

Stars
29,455
Forks
1,807
Last commit
2 months ago

A blockchain-powered social platform offering censorship-resistant content sharing, user-owned data, and innovative monetization options.

Open Source Alternative to:

X (Twitter)

JumpServer

Secure access management for modern IT infrastructure

Stars
30,330
Forks
5,703
Last commit
7 hours ago

Open-source privileged access management solution offering secure, browser-based access to SSH, RDP, Kubernetes, databases and remote applications.

Open Source Alternative to:

Teleport

Kitty

GPU-accelerated terminal built for power users

Stars
32,521
Forks
1,351
Last commit
6 hours ago

High-performance terminal emulator with GPU acceleration, graphics support, and advanced scripting capabilities for developers and system administrators.

Open Source Alternative to:

Warp

MaxKB

AI assistant that enhances enterprise knowledge management

Stars
20,791
Forks
2,790
Last commit
2 hours ago

Open-source AI solution combining RAG pipelines, workflow automation, and multi-model support for intelligent enterprise knowledge management and customer service.

Typesense

Lightning-fast, typo-tolerant search engine for all

Stars
25,652
Forks
877
Last commit
19 hours ago

Open-source search solution offering blazing speed, typo tolerance, and effortless scalability for developers and businesses.

Open Source Alternative to:

Pinecone

Matomo

Empower your digital strategy with actionable insights

Stars
21,441
Forks
2,839
Last commit
2 hours ago

Comprehensive web analytics platform offering full data ownership, privacy protection, and customizable insights for data-driven decision making.

Open Source Alternative to:

Google Analytics

Navidrome

Stream your music collection anywhere with modern web UI

Stars
20,602
Forks
1,465
Last commit
7 hours ago

Self-hosted music streaming server that makes your personal collection accessible through web interface and mobile apps. Fast, lightweight, handles large libraries.

Open Source Alternative to:

Spotify

Screenity

Free, private screen recording for Chrome

Stars
18,131
Forks
1,459
Last commit
13 days ago

Capture, annotate, and edit screen recordings with no limits or sign-up required. Completely private and open source.

Open Source Alternative to:

Screen Studio

Helium

Privacy-first browser with no ads, trackers, or bloat

Stars
13,903
Forks
307
Last commit
14 hours ago

Open-source Chromium-based browser offering best-in-class privacy protection, unbiased ad-blocking, split view, native !bangs, and zero bloat by default.

Open Source Alternative to:

Firefox

OpenProject

Open source project management for teams

Stars
14,886
Forks
3,201
Last commit
2 hours ago

Powerful classic, agile or hybrid project management software with a focus on data privacy and security

Open Source Alternative to:

Linear

Notesnook

Secure, private note-taking for the digital age

Stars
13,955
Forks
940
Last commit
3 hours ago

End-to-end encrypted note-taking app with cross-platform sync, rich text editing, and offline support for ultimate privacy and productivity.

Open Source Alternative to:

Notion

Blinko

AI-Powered Note Taking App

Stars
10,101
Forks
710
Last commit
7 days ago

The next generation of open-source AI-powered card notes designed to help you quickly capture and organize inspiration so that ideas never run out.

Open Source Alternative to:

Notion

Shotcut

A free, open source, cross-platform video editor

Stars
13,773
Forks
1,334
Last commit
7 hours ago

Free, open-source video editor supporting 4K resolution, hundreds of formats, and professional features like Blackmagic Design integration across Windows, Mac, and Linux.

Open Source Alternative to:

CapCut

Darktable

Professional RAW photo editing and workflow management

Stars
12,291
Forks
1,304
Last commit
7 hours ago

Open source photography workflow application for RAW development. Non-destructive editing, professional color management, and GPU acceleration for photographers.

Open Source Alternative to:

Adobe Lightroom

Manticore Search

Lightning-fast open source search engine for big data

Stars
11,759
Forks
624
Last commit
11 hours ago

Open source search database delivering 2.83x faster performance than Elasticsearch. Features vector search, SQL interface, and full-text capabilities.

Open Source Alternative to:

Algolia

Hyprnote

AI-powered notepad that transforms meeting notes into clear summaries

Stars
8,304
Forks
586
Last commit
8 hours ago

An intelligent note-taking assistant that combines your quick notes with meeting transcripts to create comprehensive, organized meeting summaries automatically.

Open Source Alternative to:

Granola

PairDrop

Instant file sharing across devices without setup

Stars
10,147
Forks
600
Last commit
1 year ago

Share files instantly between devices using peer-to-peer technology. No registration, installation, or configuration required. Works cross-platform.

Open Source Alternative to:

WeTransfer

Krita

Professional digital painting made accessible to everyone

Stars
9,644
Forks
768
Last commit
5 hours ago

Free and open source painting program built by artists for artists. Features professional brushes, layers, animation tools, and drawing assistants for all skill levels.

Open Source Alternative to:

Photoshop

Tuta

Secure email, calendar and contacts with end-to-end encryption

Stars
7,490
Forks
611
Last commit
16 hours ago

Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.

Open Source Alternative to:

Gmail

OctoBot

Automate crypto trading with open-source strategies

Stars
5,748
Forks
1,148
Last commit
11 hours ago

OctoBot is an open-source platform for automated cryptocurrency trading, offering customizable strategies and easy integration with exchanges.

Open Source Alternative to:

3Commas

Weblate

Continuous web-based localization for global reach

Stars
5,836
Forks
1,270
Last commit
6 hours ago

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:

Crowdin

Mathesar

Spreadsheet-like interface for PostgreSQL databases

Stars
4,931
Forks
471
Last commit
9 hours ago

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:

Airtable

Easy!Appointments

Free open-source appointment booking for any business

Stars
4,157
Forks
1,516
Last commit
7 days ago

Self-hosted appointment scheduling solution with Google Calendar sync, customizable workflows, and no monthly fees. Perfect for healthcare, salons, and service businesses.

Open Source Alternative to:

Calendly

Kdenlive

Professional video editing without the price tag

Stars
4,924
Forks
404
Last commit
5 hours ago

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:

CapCut

Flipt

Git-native feature management for developers

Stars
4,778
Forks
281
Last commit
3 hours ago

A feature flag platform that integrates with Git workflows, enabling developers to manage features directly in their codebase.

Open Source Alternative to:

LaunchDarkly

BleachBit

Clean your system and free disk space

Stars
4,769
Forks
338
Last commit
4 hours ago

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:

CCleaner

LibreOffice

Free office suite with Microsoft compatibility

Stars
3,868
Forks
817
Last commit
2 hours ago

Complete free office suite compatible with Microsoft formats (.doc, .docx, .xls, .xlsx, .ppt, .pptx). Open source alternative with regular updates.

Open Source Alternative to:

Microsoft 365

RawTherapee

Professional raw photo processing made free and powerful

Stars
3,906
Forks
386
Last commit
4 days ago

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:

Adobe Lightroom

Ryot

Track your life, your way

Stars
3,240
Forks
110
Last commit
19 hours ago

Ryot is a versatile platform for effortlessly tracking media, fitness, and more, replacing manual methods like spreadsheets.

Open Source Alternative to:

Notion

Financial Freedom

Open-source personal finance management tool

Stars
2,841
Forks
219
Last commit
14 days ago

Self-hosted alternative to Mint and YNAB for budgeting and building wealth while maintaining full control of your financial data.

Open Source Alternative to:

YNAB

Quant-UX

Design, prototype, and test user experiences with ease

Stars
2,509
Forks
264
Last commit
4 days ago

Quant-UX is an open-source tool for creating interactive prototypes, conducting user tests, and analyzing results to improve UX design.

Open Source Alternative to:

Miro

Icinga

Open source monitoring for complex IT infrastructure

Stars
2,194
Forks
602
Last commit
4 hours ago

Monitor networks, servers, and cloud environments with flexible open-source solution. Custom checks, fast alerts, and complete infrastructure control.

Open Source Alternative to:

DataDog

Wire

Secure collaboration platform with end-to-end encryption

Stars
2,534
Forks
179
Last commit
4 months ago

A comprehensive collaboration platform offering end-to-end encrypted messaging, file sharing, and video calls with enterprise-grade security and compliance features.

Open Source Alternative to:

Discord

Kanri

Simplify your workflow with offline Kanban boards

Stars
1,867
Forks
147
Last commit
17 hours ago

Kanri is a free, open-source personal Kanban app that works offline, offering a modern and simple experience while respecting your privacy.

Open Source Alternative to:

Monday

Nightingale

Transform any song into karaoke with AI-powered vocals

Stars
1,013
Forks
67
Last commit
14 days ago

AI-powered karaoke software that separates vocals from any song, transcribes lyrics with word-level sync, scores your pitch in real-time, and includes dynamic backgrounds.

Open Source Alternative to:

Smule

Flow

Fast, secure browsing with powerful organization features

Stars
959
Forks
56
Last commit
14 hours ago

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:

Firefox

TimeScribe

Transform your time tracking into actionable insights

Stars
802
Forks
72
Last commit
3 days ago

Advanced time tracking and productivity analytics tool that captures detailed work patterns, generates comprehensive reports, and helps optimize workflow efficiency.

Open Source Alternative to:

Toggl

OpenAlternative Ads

Weekly advertisement packages now available. Connect with an audience of professional tech enthusiasts.

Book in under 5 mins

YNS

Commerce rebuilt for the agentic future; a Lovable-like platform where AI builds real Stripe-powered stores.

Launch your store

Sevalla

Deploy your app before your coffee gets cold. It’s that easy. Try Sevalla with $50 free credit.

Visit Sevalla

NetData

Real-time monitoring for systems and applications

Stars
78,551
Forks
6,417
Last commit
8 hours ago

Powerful, efficient, and user-friendly monitoring solution for servers, containers, and applications with instant insights and alerts.

Open Source Alternative to:

DataDog

Paperless-home

Effortlessly organize your digital documents

Stars
39,714
Forks
2,567
Last commit
7 hours ago

A powerful open-source solution for managing, organizing, and searching your digital documents with ease and efficiency.

Open Source Alternative to:

Google Workspace

1Panel

Manage Linux servers with ease through a modern web interface

Stars
35,107
Forks
3,109
Last commit
2 hours ago

Comprehensive web-based tool for Linux server administration with integrated website, database, container, and LLM management capabilities.

Open Source Alternative to:

Plesk

ERPNext

Comprehensive business management, tailored for you

Stars
33,096
Forks
10,999
Last commit
2 hours ago

Open-source ERP solution offering modules for accounting, inventory, HR, CRM, and more. Customizable and scalable for businesses of all sizes.

Open Source Alternative to:

HubSpot

ShareX

Powerful screen capture and file sharing tool for Windows

Stars
36,210
Forks
3,647
Last commit
1 day ago

ShareX is a free, open-source program that captures or records any area of your screen and shares it with a single keypress, supporting various file types and destinations.

Open Source Alternative to:

Screen Studio

Hey

Decentralized social networking for the Web3 era

Stars
29,455
Forks
1,807
Last commit
2 months ago

A blockchain-powered social platform offering censorship-resistant content sharing, user-owned data, and innovative monetization options.

Open Source Alternative to:

X (Twitter)

JumpServer

Secure access management for modern IT infrastructure

Stars
30,330
Forks
5,703
Last commit
7 hours ago

Open-source privileged access management solution offering secure, browser-based access to SSH, RDP, Kubernetes, databases and remote applications.

Open Source Alternative to:

Teleport

Kitty

GPU-accelerated terminal built for power users

Stars
32,521
Forks
1,351
Last commit
6 hours ago

High-performance terminal emulator with GPU acceleration, graphics support, and advanced scripting capabilities for developers and system administrators.

Open Source Alternative to:

Warp

MaxKB

AI assistant that enhances enterprise knowledge management

Stars
20,791
Forks
2,790
Last commit
2 hours ago

Open-source AI solution combining RAG pipelines, workflow automation, and multi-model support for intelligent enterprise knowledge management and customer service.

Typesense

Lightning-fast, typo-tolerant search engine for all

Stars
25,652
Forks
877
Last commit
19 hours ago

Open-source search solution offering blazing speed, typo tolerance, and effortless scalability for developers and businesses.

Open Source Alternative to:

Pinecone

Matomo

Empower your digital strategy with actionable insights

Stars
21,441
Forks
2,839
Last commit
2 hours ago

Comprehensive web analytics platform offering full data ownership, privacy protection, and customizable insights for data-driven decision making.

Open Source Alternative to:

Google Analytics

Navidrome

Stream your music collection anywhere with modern web UI

Stars
20,602
Forks
1,465
Last commit
7 hours ago

Self-hosted music streaming server that makes your personal collection accessible through web interface and mobile apps. Fast, lightweight, handles large libraries.

Open Source Alternative to:

Spotify

Screenity

Free, private screen recording for Chrome

Stars
18,131
Forks
1,459
Last commit
13 days ago

Capture, annotate, and edit screen recordings with no limits or sign-up required. Completely private and open source.

Open Source Alternative to:

Screen Studio

Helium

Privacy-first browser with no ads, trackers, or bloat

Stars
13,903
Forks
307
Last commit
14 hours ago

Open-source Chromium-based browser offering best-in-class privacy protection, unbiased ad-blocking, split view, native !bangs, and zero bloat by default.

Open Source Alternative to:

Firefox

OpenProject

Open source project management for teams

Stars
14,886
Forks
3,201
Last commit
2 hours ago

Powerful classic, agile or hybrid project management software with a focus on data privacy and security

Open Source Alternative to:

Linear

Notesnook

Secure, private note-taking for the digital age

Stars
13,955
Forks
940
Last commit
3 hours ago

End-to-end encrypted note-taking app with cross-platform sync, rich text editing, and offline support for ultimate privacy and productivity.

Open Source Alternative to:

Notion

Blinko

AI-Powered Note Taking App

Stars
10,101
Forks
710
Last commit
7 days ago

The next generation of open-source AI-powered card notes designed to help you quickly capture and organize inspiration so that ideas never run out.

Open Source Alternative to:

Notion

Shotcut

A free, open source, cross-platform video editor

Stars
13,773
Forks
1,334
Last commit
7 hours ago

Free, open-source video editor supporting 4K resolution, hundreds of formats, and professional features like Blackmagic Design integration across Windows, Mac, and Linux.

Open Source Alternative to:

CapCut

Darktable

Professional RAW photo editing and workflow management

Stars
12,291
Forks
1,304
Last commit
7 hours ago

Open source photography workflow application for RAW development. Non-destructive editing, professional color management, and GPU acceleration for photographers.

Open Source Alternative to:

Adobe Lightroom

Manticore Search

Lightning-fast open source search engine for big data

Stars
11,759
Forks
624
Last commit
11 hours ago

Open source search database delivering 2.83x faster performance than Elasticsearch. Features vector search, SQL interface, and full-text capabilities.

Open Source Alternative to:

Algolia

Hyprnote

AI-powered notepad that transforms meeting notes into clear summaries

Stars
8,304
Forks
586
Last commit
8 hours ago

An intelligent note-taking assistant that combines your quick notes with meeting transcripts to create comprehensive, organized meeting summaries automatically.

Open Source Alternative to:

Granola

PairDrop

Instant file sharing across devices without setup

Stars
10,147
Forks
600
Last commit
1 year ago

Share files instantly between devices using peer-to-peer technology. No registration, installation, or configuration required. Works cross-platform.

Open Source Alternative to:

WeTransfer

Krita

Professional digital painting made accessible to everyone

Stars
9,644
Forks
768
Last commit
5 hours ago

Free and open source painting program built by artists for artists. Features professional brushes, layers, animation tools, and drawing assistants for all skill levels.

Open Source Alternative to:

Photoshop

Tuta

Secure email, calendar and contacts with end-to-end encryption

Stars
7,490
Forks
611
Last commit
16 hours ago

Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.

Open Source Alternative to:

Gmail

OctoBot

Automate crypto trading with open-source strategies

Stars
5,748
Forks
1,148
Last commit
11 hours ago

OctoBot is an open-source platform for automated cryptocurrency trading, offering customizable strategies and easy integration with exchanges.

Open Source Alternative to:

3Commas

Weblate

Continuous web-based localization for global reach

Stars
5,836
Forks
1,270
Last commit
6 hours ago

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:

Crowdin

Mathesar

Spreadsheet-like interface for PostgreSQL databases

Stars
4,931
Forks
471
Last commit
9 hours ago

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:

Airtable

Easy!Appointments

Free open-source appointment booking for any business

Stars
4,157
Forks
1,516
Last commit
7 days ago

Self-hosted appointment scheduling solution with Google Calendar sync, customizable workflows, and no monthly fees. Perfect for healthcare, salons, and service businesses.

Open Source Alternative to:

Calendly

Kdenlive

Professional video editing without the price tag

Stars
4,924
Forks
404
Last commit
5 hours ago

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:

CapCut

Flipt

Git-native feature management for developers

Stars
4,778
Forks
281
Last commit
3 hours ago

A feature flag platform that integrates with Git workflows, enabling developers to manage features directly in their codebase.

Open Source Alternative to:

LaunchDarkly

BleachBit

Clean your system and free disk space

Stars
4,769
Forks
338
Last commit
4 hours ago

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:

CCleaner

LibreOffice

Free office suite with Microsoft compatibility

Stars
3,868
Forks
817
Last commit
2 hours ago

Complete free office suite compatible with Microsoft formats (.doc, .docx, .xls, .xlsx, .ppt, .pptx). Open source alternative with regular updates.

Open Source Alternative to:

Microsoft 365

RawTherapee

Professional raw photo processing made free and powerful

Stars
3,906
Forks
386
Last commit
4 days ago

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:

Adobe Lightroom

Ryot

Track your life, your way

Stars
3,240
Forks
110
Last commit
19 hours ago

Ryot is a versatile platform for effortlessly tracking media, fitness, and more, replacing manual methods like spreadsheets.

Open Source Alternative to:

Notion

Financial Freedom

Open-source personal finance management tool

Stars
2,841
Forks
219
Last commit
14 days ago

Self-hosted alternative to Mint and YNAB for budgeting and building wealth while maintaining full control of your financial data.

Open Source Alternative to:

YNAB

Quant-UX

Design, prototype, and test user experiences with ease

Stars
2,509
Forks
264
Last commit
4 days ago

Quant-UX is an open-source tool for creating interactive prototypes, conducting user tests, and analyzing results to improve UX design.

Open Source Alternative to:

Miro

Icinga

Open source monitoring for complex IT infrastructure

Stars
2,194
Forks
602
Last commit
4 hours ago

Monitor networks, servers, and cloud environments with flexible open-source solution. Custom checks, fast alerts, and complete infrastructure control.

Open Source Alternative to:

DataDog

Wire

Secure collaboration platform with end-to-end encryption

Stars
2,534
Forks
179
Last commit
4 months ago

A comprehensive collaboration platform offering end-to-end encrypted messaging, file sharing, and video calls with enterprise-grade security and compliance features.

Open Source Alternative to:

Discord

Kanri

Simplify your workflow with offline Kanban boards

Stars
1,867
Forks
147
Last commit
17 hours ago

Kanri is a free, open-source personal Kanban app that works offline, offering a modern and simple experience while respecting your privacy.

Open Source Alternative to:

Monday

Nightingale

Transform any song into karaoke with AI-powered vocals

Stars
1,013
Forks
67
Last commit
14 days ago

AI-powered karaoke software that separates vocals from any song, transcribes lyrics with word-level sync, scores your pitch in real-time, and includes dynamic backgrounds.

Open Source Alternative to:

Smule

Flow

Fast, secure browsing with powerful organization features

Stars
959
Forks
56
Last commit
14 hours ago

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:

Firefox

TimeScribe

Transform your time tracking into actionable insights

Stars
802
Forks
72
Last commit
3 days ago

Advanced time tracking and productivity analytics tool that captures detailed work patterns, generates comprehensive reports, and helps optimize workflow efficiency.

Open Source Alternative to:

Toggl

OpenAlternative Ads

Weekly advertisement packages now available. Connect with an audience of professional tech enthusiasts.

Book in under 5 mins

YNS

Commerce rebuilt for the agentic future; a Lovable-like platform where AI builds real Stripe-powered stores.

Launch your store

Sevalla

Deploy your app before your coffee gets cold. It’s that easy. Try Sevalla with $50 free credit.

Visit Sevalla

GPL-3.0 Licensed Open Source Software

A curated collection of the 47 best open source software licensed under GPL-3.0.