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Open Source Projects using Preact

A curated collection of the 16 best open source software using Preact. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

Hanko

Passkeys, SSO, and MFA without vendor lock-in

  • Stars

    9,066

  • Last commit

    14 hours ago

  • License

    AGPL-3.0
Open source authentication platform supporting passkeys, 2FA, SSO, and social login. Self-host or use Hanko Cloud, with full control over your data and no lock-in.

Open Source Alternative to:

Auth0

Rocket.Chat

Self-hosted team messaging with voice, video, and AI

  • Stars

    46,372

  • Last commit

    5 hours ago

  • License

    MIT
Open source communication platform combining messaging, voice, video, and AI for organizations that need full data control, air-gapped deployments, and zero-trust security.

Open Source Alternative to:

Discord

Tailscale

Zero-config VPN with WireGuard for secure networking

  • Stars

    Stars growing over the last 30 days38,664

  • Last commit

    8 hours ago

  • License

    BSD-3-Clause
Deploy a modern WireGuard-based VPN with zero configuration. Connect devices securely across clouds, VPCs, and on-premises networks without firewall rules.

Open Source Alternative to:

Zerotier

Happy

AI
Desktop and phone app for your Claude, Codex and Grok sessions

  • Stars

    24,493

  • Last commit

    7 hours ago

  • License

    MIT
Orchestrates Claude Code, Codex, and Grok through a single desktop and mobile app, reusing the AI subscriptions you already pay for.

Open Source Alternative to:

Conductor

Bluesky

Social media reimagined for community and connection

  • Stars

    18,373

  • Last commit

    11 hours ago

  • License

    MIT
A decentralized social network focused on fostering meaningful interactions and giving users control over their data and experience.

Open Source Alternative to:

Facebook

VictoriaMetrics

High-performance time series database for metrics and logs

  • Stars

    18,017

  • Last commit

    7 hours ago

  • License

    Apache-2.0
Time series database and monitoring platform compatible with Prometheus, handling billions of metrics with lower resource usage than most alternatives.

Open Source Alternative to:

DataDog

WooCommerce

Open-source ecommerce platform for WordPress

  • Stars

    10,583

  • Last commit

    5 hours ago

  • License

    GPL-2.0
Build and manage online stores with customizable features, extensions, and themes for businesses of all sizes.

Open Source Alternative to:

Shopify

Formbricks

Privacy-first survey and experience management platform

  • Stars

    13,217

  • Last commit

    5 hours ago

  • License

    AGPL-3.0
Collect feedback across websites, apps, and emails with targeted surveys, user segmentation, and GDPR-compliant data handling. Self-host or use the cloud.

Open Source Alternative to:

Google Forms

Botpress

AI
Build powerful AI agents with cutting-edge LLM technology

  • Stars

    14,980

  • Last commit

    13 hours ago

  • License

    MIT
A comprehensive platform for creating AI agents with intuitive tools, extensive integrations, and enterprise-grade features powered by the latest language models.

Open Source Alternative to:

Manychat

Builder

Visual development platform for modern web experiences

  • Stars

    8,884

  • Last commit

    24 hours ago

  • License

    MIT
Drag-and-drop interface for creating and optimizing digital experiences, with headless CMS and powerful integrations.

Open Source Alternative to:

WordPress

Plasmic

Visual app builder that integrates with your existing codebase

  • Stars

    7,148

  • Last commit

    6 hours ago

  • License

    MIT
Open-source visual editor for building websites and web apps. Connect to any data source, design custom UIs, and ship production React code without leaving your stack.

Open Source Alternative to:

Webflow

Silverbullet

Programmable notes with queries, Lua scripting, and wiki links

  • Stars

    Stars growing over the last 30 days6,460

  • Last commit

    16 hours ago

  • License

    MIT
A self-hosted, browser-based note-taking system that turns plain Markdown pages into a queryable, scriptable knowledge base you control.

Open Source Alternative to:

Notion

Gladys Assistant

Self-hosted home automation without the cloud

  • Stars

    3,269

  • Last commit

    7 hours ago

  • License

    Apache-2.0
Privacy-first home automation platform that runs locally on your hardware, supports Zigbee, Matter, and MQTT, and lets you automate your home without coding.

Open Source Alternative to:

Google Assistant

CourseLit

Create, sell, and manage online courses with ease

  • Stars

    1,295

  • Last commit

    9 hours ago

  • License

    AGPL-3.0
An open-source platform for building and selling online courses, featuring customizable themes, integrated payments, and user management.

Open Source Alternative to:

Udemy

Midori Browser

Fast, secure, and privacy-focused web browsing

  • Stars

    413

  • Last commit

    11 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:

Firefox

BugPin

Self-hosted visual bug reporting with screenshot annotation

  • Stars

    48

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Embeds a lightweight widget into web apps so users can capture screenshots, annotate issues, and submit reports with console logs and browser metadata included.

Open Source Alternative to:

Markup
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