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Open Source Projects using Biome JS

A curated collection of the 89 best open source software using Biome JS. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

Favicon of OpenStatus

OpenStatus

Status page and uptime monitoring for growing teams

  • Stars

    9,006

  • Last commit

    11 hours ago

  • License

    AGPL-3.0
Open-source status page and uptime monitor that tracks endpoints from 28 global regions, communicates incidents, and helps satisfy SOC 2 audit requirements.

Open Source Alternative to:

Favicon of incident.io
incident.io
Favicon of Cap

Cap

Privacy-first CAPTCHA alternative with proof-of-work

  • Stars

    7,577

  • Last commit

    9 days ago

  • License

    Apache-2.0
Lightweight open-source CAPTCHA solution using SHA-256 proof-of-work. 250x smaller than hCaptcha, fully customizable, and privacy-focused with zero telemetry.

Open Source Alternative to:

Favicon of reCAPTCHA
reCAPTCHA
Favicon of Your Next Store (YNS)

Your Next Store (YNS)

Launch Your Store in Minutes, No Code Needed

  • Stars

    5,480

  • Last commit

    2 days ago

  • License

    MIT
Fast, modern e-commerce with instant setup and full customization. Powered by Stripe for seamless transactions.

Open Source Alternative to:

Favicon of Shopify
Shopify
Favicon of Rivet

Rivet

Build stateful backends with in-memory actors

  • Stars

    6,078

  • Last commit

    2 days 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 Plunk

Plunk

The open-source, affordable email platform

  • Stars

    5,384

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Plunk unifies marketing, transactional, and broadcast emails into a single, complete solution for businesses of all sizes.

Open Source Alternative to:

Favicon of Resend
Resend
Favicon of UnKey

UnKey

Secure, scalable API key management for developers

  • Stars

    5,421

  • Last commit

    9 hours ago

  • License

    AGPL-3.0
Streamline API authentication with UnKey's powerful, developer-friendly platform for creating, revoking, and monitoring API keys.

Open Source Alternative to:

Favicon of Kong
Kong
Favicon of Weblate

Weblate

Continuous web-based localization for global reach

  • Stars

    6,034

  • Last commit

    6 hours ago

  • License

    GPL-3.0
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:

Favicon of Crowdin
Crowdin
Favicon of Rallly

Rallly

Effortless group scheduling for seamless collaboration

  • Stars

    5,220

  • Last commit

    7 hours ago

  • License

    AGPL-3.0
A user-friendly, open-source tool for coordinating events and meetings without the hassle of back-and-forth emails or messages.

Open Source Alternative to:

Favicon of Calendly
Calendly
Favicon of IronCalc

IronCalc

A spreadsheet engine you can embed, self-host, or run in the browser

  • Stars

    4,115

  • Last commit

    1 day ago

  • License

    Apache-2.0
IronCalc is an open-source, Rust-powered spreadsheet engine with .xlsx support, 300+ functions, and bindings for JavaScript and Python.

Open Source Alternative to:

Favicon of Microsoft Excel
Microsoft Excel
Favicon of Tracecat

Tracecat

AI
Open source security automation platform for builders

  • Stars

    3,776

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Tracecat is a scalable, self-hostable platform for automating security workflows and playbooks without limits.

Open Source Alternative to:

Favicon of Jira
Jira
Favicon of Bknd

Bknd

Feature-rich backend that runs anywhere you need it

  • Stars

    3,751

  • Last commit

    5 months ago

  • License

    Apache-2.0
Lightweight Firebase alternative with database, auth, storage, and workflows. Framework-agnostic backend that integrates with NextJS, Remix, Hono and more.

Open Source Alternative to:

Favicon of Supabase
Supabase
Favicon of Deepnote

Deepnote

Python, SQL, and AI in a collaborative data notebook

  • Stars

    2,999

  • Last commit

    1 day ago

  • License

    Apache-2.0
Deepnote is an open-source collaborative notebook for data analysts and scientists, combining Python, SQL, AI assistance, and live sharing in one cloud platform.

Open Source Alternative to:

Favicon of Snowflake
Snowflake
Favicon of Ryot

Ryot

Track your life, your way

  • Stars

    3,560

  • Last commit

    6 hours ago

  • License

    GPL-3.0
Ryot is a versatile platform for effortlessly tracking media, fitness, and more, replacing manual methods like spreadsheets.

Open Source Alternative to:

Favicon of Notion
Notion
Favicon of Autumn

Autumn

Stripe payments, usage tracking, and paywalls in 3 functions

  • Stars

    2,647

  • Last commit

    9 hours ago

  • License

    Apache-2.0
Simplify Stripe integration for AI startups with 3 functions, 0 webhooks. Build pricing plans in 30 minutes with usage tracking, credits, and feature controls.

Open Source Alternative to:

Favicon of Stripe Billing
Stripe Billing
Favicon of Usertour

Usertour

Create engaging product tours and user onboarding experiences

  • Stars

    2,283

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Open-source platform for building interactive product tours, tooltips, and in-app guides to improve user engagement and feature adoption without complex coding

Open Source Alternative to:

Favicon of Userflow
Userflow
Favicon of c15t

c15t

Build privacy-compliant cookie banners with full control

  • Stars

    1,861

  • Last commit

    6 days 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 Termly
Termly
Favicon of undb

undb

Local-first, offline-first no-code database platform

  • Stars

    2,973

  • Last commit

    1 year ago

  • License

    AGPL-3.0
Build and manage custom databases with ease, create type-safe APIs, and develop applications quickly

Open Source Alternative to:

Favicon of Supabase
Supabase
Favicon of Languine

Languine

Automated localization for modern development teams

  • Stars

    2,030

  • Last commit

    4 months ago

  • License

    MIT
A developer-focused localization platform that automates translation workflows within your existing development pipeline and CI/CD processes.

Open Source Alternative to:

Favicon of Crowdin
Crowdin
Favicon of Flowglad

Flowglad

AI
Cross-system automation and knowledge base for accounting firms

  • Stars

    1,718

  • Last commit

    3 months ago

  • License

    Unknown
Connects client data across tools, automates recurring accounting workflows, and maintains a self-updating knowledge base with human approval controls.
Favicon of Rakazo

Rakazo

AI
Self-hosted AI agents that do real work on your machine

  • Stars

    1,156

  • Last commit

    6 hours ago

  • License

    Apache-2.0
Run persistent AI bots that sign into your tools, complete tasks autonomously, and ask for approval when needed. Your keys, your model, your infrastructure.

Open Source Alternative to:

Favicon of Grok Bot
Grok Bot
Favicon of Databuddy

Databuddy

Privacy-first analytics without cookies or tracking

  • Stars

    1,136

  • Last commit

    9 hours 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 LogChimp

LogChimp

Open-source feedback management for product teams

  • Stars

    1,119

  • Last commit

    11 hours ago

  • License

    Apache-2.0
Collect, organize, and prioritize user feedback to build better products. Self-hosted solution for seamless feature request management.

Open Source Alternative to:

Favicon of Featurebase
Featurebase
Favicon of Cossistant

Cossistant

AI
AI-native support infrastructure for modern SaaS

  • Stars

    714

  • Last commit

    19 days ago

  • License

    AGPL-3.0
Open-source support platform combining AI and human agents. React components with shadcn/ui design philosophy, styled with Tailwind CSS for NextJS apps.

Open Source Alternative to:

Favicon of Zendesk
Zendesk
Favicon of Frontman

Frontman

AI
AI coding agent that sees your live app and edits code

  • Stars

    673

  • Last commit

    8 hours ago

  • License

    Apache-2.0
Open-source AI coding agent that runs in your browser, sees your live DOM and app state, and makes real code edits from plain English descriptions.

Open Source Alternative to:

Favicon of Lovable
Lovable
Favicon of Giselle

Giselle

AI
Build and deploy AI agents through visual workflows

  • Stars

    554

  • Last commit

    21 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 Workbench

Workbench

Inspect, debug, and replay BullMQ queues visually

  • Stars

    434

  • 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 Sigle

Sigle

Web3 writing platform for content creators and crypto enthusiasts

  • Stars

    490

  • Last commit

    1 day 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 Marble CMS

Marble CMS

Simple content management for modern sites

  • Stars

    381

  • Last commit

    1 day 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 Midori Browser

Midori Browser

Fast, secure, and privacy-focused web browsing

  • Stars

    385

  • Last commit

    16 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 Procaptcha

Procaptcha

Decentralized CAPTCHA for enhanced web security

  • Stars

    298

  • Last commit

    2 days 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 OpenPolicy

OpenPolicy

Generate legal policies directly from TypeScript code

  • Stars

    160

  • Last commit

    20 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 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 Abby

Abby

Type-safe feature flags and remote config for developers

  • Stars

    167

  • 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 Windshift

Windshift

Self-hosted project management with boards and test tracking

  • Stars

    103

  • Last commit

    12 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 xyd

xyd

Transform documentation with developer-focused simplicity

  • Stars

    113

  • Last commit

    7 hours 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

    61

  • Last commit

    2 months 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
Favicon of Warpdrive

Warpdrive

Self-hosted CRM for business development teams

  • Stars

    74

  • Last commit

    2 days ago

  • License

    MIT
Pipeline management, deal workspace, contacts, and two-way Gmail for BD teams. Runs on your own infrastructure, MIT licensed, no per-seat fees.

Open Source Alternative to:

Favicon of Attio
Attio
Favicon of MDMA

MDMA

Markdown that mounts real applications

  • Stars

    64

  • Last commit

    14 days ago

  • License

    MIT
Markdown Document with Mounted Applications, the open-source format that turns AI responses into interactive documents. Forms, tables, approval gates and charts render straight from the chat, no custom UI per use case.

Open Source Alternative to:

Favicon of Streamlit
Streamlit
Favicon of Wraps

Wraps

Code-first email platform that deploys to your AWS

  • Stars

    56

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Build email templates as React components and automations in TypeScript. Deploy to your AWS account with SES integration. Marketing teams edit content without code.

Open Source Alternative to:

Favicon of Resend
Resend
Favicon of Manage

Manage

Open-source project management inspired by Basecamp

  • Stars

    68

  • Last commit

    16 days ago

  • License

    AGPL-3.0
A self-hosted project management tool offering task management, file sharing, event tracking, and team collaboration features in an intuitive interface.

Open Source Alternative to:

Favicon of Linear
Linear
Favicon of AgentMail

AgentMail

AI
Email inbox API built for AI agents and workflows

  • Stars

    38

  • Last commit

    5 days ago

  • License

    MIT
Provides AI agents with real email inboxes via REST API. Create inboxes instantly, send and receive messages, search threads, and handle attachments programmatically.
Favicon of Malak

Malak

Streamline investor relations and fundraising management

  • Stars

    61

  • Last commit

    6 months ago

  • License

    AGPL-3.0
Open source platform for managing investor updates, KPIs, fundraising pipeline and data rooms. Keep stakeholders informed and organized.

Open Source Alternative to:

Favicon of Carta
Carta
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