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Browse Trending Open Source Tools This Month

Open source tools gaining GitHub stars fastest over the last 30 days. Ranked by growth rate rather than raw star count, so genuine breakouts surface above established projects.

Favicon of Campfire

Campfire

Self-hosted group chat without recurring subscription fees

  • Stars

    4,772

  • Last commit

    4 days ago

  • License

    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:

Favicon of Microsoft Teams
Microsoft Teams
Favicon of ProjectDiscovery

ProjectDiscovery

AI
Advanced vulnerability detection and management platform

  • Stars

    31,986

  • Last commit

    10 hours ago

  • License

    MIT
Monitor infrastructure for exploitable vulnerabilities with real-time detection, automated workflows, and zero false positives.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of OpnForm

OpnForm

Create powerful forms with ease and flexibility

  • Stars

    3,826

  • Last commit

    6 days ago

  • License

    AGPL-3.0
A versatile open-source form builder for collecting data, managing submissions, and integrating with your favorite tools.

Open Source Alternative to:

Favicon of Google Forms
Google Forms
Favicon of Opengrep

Opengrep

Open-source code security engine for developers

  • Stars

    3,174

  • Last commit

    12 hours ago

  • License

    LGPL-2.1
Opengrep is a community-driven fork of SemgrepCE, providing accessible static code analysis and security scanning for developers.
Favicon of Chatwoot

Chatwoot

Omnichannel customer support with a built-in AI assistant

  • Stars

    37,745

  • Last commit

    7 hours ago

  • License

    MIT
Manage customer conversations across live chat, email, WhatsApp, Instagram, and more from one inbox, with an AI assistant that suggests replies and automates common questions.

Open Source Alternative to:

Favicon of LiveChat
LiveChat
Favicon of OctoBot

OctoBot

Automate crypto trading with open-source strategies

  • Stars

    6,761

  • Last commit

    18 hours ago

  • License

    GPL-3.0
OctoBot is an open-source platform for automated cryptocurrency trading, offering customizable strategies and easy integration with exchanges.

Open Source Alternative to:

Favicon of 3Commas
3Commas
Favicon of BleachBit

BleachBit

Clean your system and free disk space

  • Stars

    7,097

  • Last commit

    9 hours ago

  • License

    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:

Favicon of CCleaner
CCleaner
Favicon of c15t

c15t

Build privacy-compliant cookie banners with full control

  • Stars

    1,959

  • Last commit

    7 hours ago

  • License

    Apache-2.0
Open source consent management framework for modern web apps. Framework-agnostic, fully customizable, and performance-first with no vendor lock-in.

Open Source Alternative to:

Favicon of Cookie Control
Cookie Control
Favicon of Kdenlive

Kdenlive

Professional video editing without the price tag

  • Stars

    5,846

  • Last commit

    12 hours ago

  • License

    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:

Favicon of CapCut
CapCut
Favicon of Donetick

Donetick

Smart task management for individuals and families

  • Stars

    2,639

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Organize tasks and chores with intelligent scheduling, fair assignment, and collaboration features. Perfect for families and teams with smart notifications.

Open Source Alternative to:

Favicon of Todoist
Todoist
Favicon of Navidrome

Navidrome

Self-hosted music streaming for your personal collection

  • Stars

    24,136

  • Last commit

    20 hours ago

  • License

    GPL-3.0
Open source music server that streams your personal library via a web player or any Subsonic-compatible mobile app on iOS and Android.

Open Source Alternative to:

Favicon of Spotify
Spotify
Favicon of Fluxer

Fluxer

Open source messaging with privacy and community focus

  • Stars

    10,567

  • Last commit

    11 hours ago

  • License

    AGPL-3.0
Free, open-source instant messaging and VoIP platform with full Markdown support, voice/video calls, moderation tools, and self-hosting options for communities.

Open Source Alternative to:

Favicon of Discord
Discord
Favicon of Documenso

Documenso

Secure, open-source document signing for everyone

  • Stars

    15,402

  • Last commit

    8 hours ago

  • License

    AGPL-3.0
Streamline your document workflows with a powerful, privacy-focused e-signature platform that puts you in control of your data.

Open Source Alternative to:

Favicon of DocuSign
DocuSign
Favicon of GoRules

GoRules

Business rules engine with AI, visual flows, and audit trails

  • Stars

    2,058

  • Last commit

    19 hours ago

  • License

    MIT
Model business logic in decision tables, visual flows, and natural-language rules. Change rules without deploys, test every path, and run the same engine anywhere.

Open Source Alternative to:

Favicon of Drools
Drools
Favicon of Netbird

Netbird

Zero Trust networking with WireGuard-based secure connectivity

  • Stars

    29,915

  • Last commit

    7 hours ago

  • License

    Unknown
Open source platform combining WireGuard overlay networks with Zero Trust access controls. Features SSO, MFA, device posture checks, and granular policies for secure remote connectivity.

Open Source Alternative to:

Favicon of Zerotier
Zerotier
Favicon of OpenObserve

OpenObserve

Petabyte-scale observability, without the massive bill.

  • Stars

    22,334

  • Last commit

    7 hours ago

  • License

    AGPL-3.0
Monitor logs, metrics, and traces with an open-source observability platform. Achieve petabyte scale with 140x lower storage costs and high performance.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of Comp AI

Comp AI

Get audit-ready for SOC 2, ISO 27001, HIPAA, and GDPR

  • Stars

    2,028

  • Last commit

    4 days ago

  • License

    AGPL-3.0
AI-driven compliance platform that automates evidence collection, policy generation, and continuous monitoring across 580+ integrations for SOC 2, ISO 27001, HIPAA, and GDPR.

Open Source Alternative to:

Favicon of Scrut
Scrut
Favicon of Frappe Builder

Frappe Builder

Visual website builder for effortless web design

  • Stars

    2,431

  • Last commit

    14 hours ago

  • License

    MIT
Frappe Builder is an open-source, low-code website builder that enables users to create beautiful, responsive websites with an intuitive visual interface.

Open Source Alternative to:

Favicon of WordPress
WordPress
Favicon of Actual

Actual

Local-first envelope budgeting with full data ownership

  • Stars

    29,467

  • Last commit

    17 hours ago

  • License

    MIT
Privacy-focused personal finance app using envelope budgeting, multi-device sync, optional end-to-end encryption, and bank sync for US, EU, and UK users.

Open Source Alternative to:

Favicon of YNAB
YNAB
Favicon of Forgejo

Forgejo

Self-hosted Git forge that's lightweight and secure

  • Stars

    5,636

  • Last commit

    13 hours ago

  • License

    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:

Favicon of GitHub
GitHub
Favicon of ActivePieces

ActivePieces

Automate workflows with no-code integration platform

  • Stars

    25,029

  • Last commit

    7 hours ago

  • License

    MIT
Open-source integration platform for seamless workflow automation. Connect apps, automate tasks, and boost productivity effortlessly.

Open Source Alternative to:

Favicon of n8n
n8n
Favicon of Mixpost

Mixpost

Self-hosted social media management without limits

  • Stars

    3,806

  • Last commit

    7 months ago

  • License

    MIT
Create, schedule, and manage social media content from your own server with no subscription fees or usage restrictions.

Open Source Alternative to:

Favicon of Post Bridge
Post Bridge
Favicon of Plane

Plane

Project management for teams and AI agents

  • Stars

    60,746

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Open source project management platform combining issues, wikis, and AI agents in one workspace. Available on cloud, self-hosted, and air-gapped deployments.

Open Source Alternative to:

Favicon of Linear
Linear
Favicon of LiveKit

LiveKit

AI
Full-stack platform for voice, video, and physical AI agents

  • Stars

    21,401

  • Last commit

    17 hours ago

  • License

    Apache-2.0
Build, test, deploy, and scale voice and video AI agents with an open source framework, inference gateway, telephony integrations, and full observability.

Open Source Alternative to:

Favicon of Voiceflow
Voiceflow
Favicon of Vaultwarden

Vaultwarden

Self-hosted Bitwarden server that runs lean on your hardware

  • Stars

    68,945

  • Last commit

    3 days ago

  • License

    AGPL-3.0
Unofficial Bitwarden-compatible server written in Rust, built for self-hosting on low-resource hardware without sacrificing client compatibility.

Open Source Alternative to:

Favicon of LastPass
LastPass
Favicon of Databuddy

Databuddy

Privacy-first analytics without cookies or tracking

  • Stars

    1,202

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Get powerful web analytics with zero cookies, 100% GDPR compliance, and full data ownership. Lightweight 3KB script delivers real-time insights without compromising user privacy.

Open Source Alternative to:

Favicon of Google Analytics
Google Analytics
Favicon of Open WebUI

Open WebUI

AI
One interface for every AI model you run or connect

  • Stars

    155,375

  • Last commit

    16 hours ago

  • License

    BSD-3-Clause
Self-hosted AI platform that connects local and cloud models, extends with Python, and keeps your data under your control.

Open Source Alternative to:

Favicon of Claude
Claude
Favicon of Ever Teams

Ever Teams

Real-time work and project management platform

  • Stars

    589

  • Last commit

    15 hours 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 ERPNext

ERPNext

Comprehensive business management, tailored for you

  • Stars

    40,089

  • Last commit

    7 hours ago

  • License

    GPL-3.0
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:

Favicon of SAP
SAP
Favicon of Grok Build

Grok Build

AI
AI coding agent and CLI for complex terminal workflows

  • Stars

    27,340

  • Last commit

    14 days ago

  • License

    Apache-2.0
Terminal-based coding agent powered by Grok 4.5 that plans, builds, tests, and deploys across any codebase with parallel subagents and plugin support.

Open Source Alternative to:

Favicon of Claude Code
Claude Code
Favicon of Mautic

Mautic

Open source marketing automation for everyone

  • Stars

    10,754

  • Last commit

    8 hours ago

  • License

    Unknown
Mautic is a free and open source marketing automation platform that helps businesses manage leads, create campaigns, and analyze results.

Open Source Alternative to:

Favicon of HubSpot
HubSpot
Favicon of llama.cpp

llama.cpp

AI
Run LLMs locally with minimal setup, maximum hardware support

  • Stars

    130,990

  • Last commit

    7 hours ago

  • License

    MIT
C/C++ inference engine for large language models, supporting quantization, multi-GPU, Apple Silicon, and an OpenAI-compatible server across a wide range of hardware.

Open Source Alternative to:

Favicon of LM Studio
LM Studio
Favicon of OpenLIT

OpenLIT

AI
Monitor, debug, and scale LLM applications with ease

  • Stars

    2,845

  • Last commit

    7 hours ago

  • License

    Apache-2.0
Open-source observability platform for GenAI and LLM applications. Real-time monitoring, distributed tracing, prompt management, and AI model evaluation built on OpenTelemetry.

Open Source Alternative to:

Favicon of LangSmith
LangSmith
Favicon of OpenWork

OpenWork

AI
Multi-model AI workspace with org-wide skill sharing

  • Stars

    24,055

  • Last commit

    7 hours ago

  • License

    MIT
Desktop app for teams to run AI agents across 50+ LLMs, share skills and MCP servers org-wide, and automate browser tasks with your own keys.

Open Source Alternative to:

Favicon of Grok Bot
Grok Bot
Favicon of Jean

Jean

AI
Parallel AI agent workspaces with Git and project context

  • Stars

    1,323

  • Last commit

    22 hours ago

  • License

    Apache-2.0
Run multiple AI coding agents in isolated Git worktrees, with cross-repo context, GitHub/Linear integrations, and support for Claude, Codex, Cursor, and more.

Open Source Alternative to:

Favicon of Claude Code
Claude Code
Favicon of Rivet

Rivet

Build stateful backends with in-memory actors

  • Stars

    6,280

  • Last commit

    11 hours ago

  • License

    Apache-2.0
Open-source infrastructure for long-lived, in-memory processes called Actors. Combines state and compute with sub-millisecond latency, realtime capabilities, and horizontal scaling.

Open Source Alternative to:

Favicon of Cloudflare Workers
Cloudflare Workers
Favicon of OpenPanel

OpenPanel

Cookie-free web and product analytics, self-hostable

  • Stars

    7,131

  • Last commit

    18 hours ago

  • License

    AGPL-3.0
Open-source analytics platform covering web traffic, custom events, funnels, retention, session replay, and revenue tracking. GDPR-compliant with optional self-hosting.

Open Source Alternative to:

Favicon of Google Analytics
Google Analytics
Favicon of dDocs

dDocs

End-to-end encrypted collaborative document editor

  • Stars

    441

  • Last commit

    7 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 Supabase

Supabase

Postgres-powered backend platform for production apps

  • Stars

    111,453

  • Last commit

    7 hours ago

  • License

    Apache-2.0
Provides a full backend stack built on Postgres: authentication, auto-generated APIs, edge functions, realtime subscriptions, file storage, and vector search.

Open Source Alternative to:

Favicon of Firebase
Firebase
Favicon of Hummingbot

Hummingbot

Open-source crypto trading bot for market making

  • Stars

    20,427

  • Last commit

    8 days ago

  • License

    Apache-2.0
Automate crypto trading strategies with a powerful, customizable platform. Connect to multiple exchanges and optimize your market making.

Open Source Alternative to:

Favicon of 3Commas
3Commas
Favicon of Mike

Mike

AI
Open-source legal AI that law firms control and extend

  • Stars

    4,328

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Self-hostable alternative to Harvey and Legora with document analysis, contract drafting, tabular review, and reusable workflows. Zero licensing costs, full data control.

Open Source Alternative to:

Favicon of Harvey
Harvey
Favicon of Hoodik

Hoodik

Secure self-hosted cloud storage with end-to-end encryption

  • Stars

    1,523

  • Last commit

    9 hours ago

  • License

    Unknown
Lightweight, self-hosted cloud storage built with Rust and Vue.js. Features end-to-end encryption, file sharing, search capabilities, and Docker deployment.

Open Source Alternative to:

Favicon of Mega
Mega
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