Open Source Projects using npm
A curated collection of the 316 best open source software using npm. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.
Feature flags and remote config for rapid deployment
Stars
6,524Last commit
14 hours agoLicense
BSD-3-Clause
Powerful feature management platform for seamless software releases, A/B testing, and personalized user experiences.
Open Source Alternative to:
Distributed OLAP database for real-time analytics at scale
Stars
6,122Last commit
4 hours agoLicense
Apache-2.0
Sub-second SQL queries on fresh streaming data at petabyte scale, built for high-concurrency user-facing apps and AI agent backends.
Open Source Alternative to:
Build scalable authorization in minutes, not months
Stars
5,937Last commit
1 day agoLicense
AGPL-3.0
Open-source authorization service for implementing fine-grained access controls. Centralized, scalable solution supporting RBAC, ABAC and ReBAC with Google Zanzibar-inspired architecture.
Open Source Alternative to:
Open source metering and billing infrastructure for any pricing model
Stars
4,357Last commit
18 hours agoLicense
AGPL-3.0
A flexible billing platform that handles usage-based metering, credit management, and subscription billing, giving developers full control over pricing models.
Open Source Alternative to:
Deploy a professional status page in minutes, no coding required
Stars
5,120Last commit
18 hours agoLicense
MIT
Free, open-source status page and uptime monitor with Docker deployment. Track 11 service types, manage incidents, schedule maintenance, and notify subscribers instantly.
Open Source Alternative to:
Effortless event-driven workflows for modern applications
Stars
5,751Last commit
3 hours agoLicense
SSPL-1.0
Simplify backend processes with event-driven functions, seamless integrations, and powerful debugging tools for developers.
Open Source Alternative to:
Lightweight self-hosted bookkeeping with AI receipt scanning
Stars
5,436Last commit
7 hours agoLicense
MIT
A privacy-first personal finance app with two-level accounts, multi-currency support, AI receipt recognition, and broad data import from formats like GnuCash and Firefly III.
Open Source Alternative to:
Secure password management for teams
Stars
6,081Last commit
17 hours agoLicense
AGPL-3.0
Open source password manager focused on security, collaboration and privacy for organizations
Open Source Alternative to:
Build reliable AI agents with unified tool integration
Stars
4,883Last commit
3 months agoLicense
Apache-2.0
Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server
Open Source Alternative to:
Build reliable LLM apps with integrated workflows
Stars
4,504Last commit
9 hours agoLicense
MIT
Open-source LLMOps platform providing prompt management, evaluation, and observability tools for building robust AI applications with team collaboration.
Open Source Alternative to:
Comprehensive analytics for data-driven decisions
Stars
5,888Last commit
7 hours agoLicense
Unknown
All-in-one analytics platform for mobile, web, and desktop apps. Track user behavior, monitor performance, and optimize your product.
Open Source Alternative to:
Spreadsheet-like interface for PostgreSQL databases
Stars
5,099Last commit
9 hours agoLicense
GPL-3.0
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:
Enterprise workplace AI with data you own and control
Stars
3,665Last commit
3 hours agoLicense
Apache-2.0
Self-hostable enterprise AI platform that unifies business data across apps, powers a knowledge graph for cited answers, and lets teams build AI agents across their stack.
Open Source Alternative to:
Powerful observability made simple for developers
Stars
4,431Last commit
3 hours agoLicense
MIT
Logfire offers intuitive observability tools for Python applications, combining logs, profiling, and telemetry in one platform.
Open Source Alternative to:
Self-hosted team workspace with chat, docs, and databases
Stars
5,021Last commit
5 months agoLicense
Apache-2.0
Local-first collaboration platform combining real-time chat, rich text pages, databases, and file management in a single self-hostable workspace.
Open Source Alternative to:
Free open-source appointment booking for any business
Stars
4,332Last commit
2 days agoLicense
GPL-3.0
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:
Craft flexible, powerful websites with ease
Stars
4,874Last commit
13 hours agoLicense
Unknown
A flat-file CMS that combines simplicity and flexibility, empowering developers to build custom websites without database complexity.
Open Source Alternative to:
A spreadsheet engine you can embed, self-host, or run in the browser
Stars
4,112Last commit
19 hours agoLicense
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:
System-wide ad-blocking and privacy protection, no extensions needed
Stars
4,135Last commit
7 days agoLicense
MIT
Free, open-source desktop app that blocks ads, trackers, and surveillance scripts across all browsers and apps on Windows, macOS, and Linux.
Open Source Alternative to:
Secure, policy-based access control for modern applications
Stars
4,547Last commit
3 days agoLicense
Apache-2.0
A scalable authorization layer that provides fine-grained access control through externalized policies, enabling secure and flexible permissions management.
Open Source Alternative to:
Git-native feature management for developers
Stars
4,873Last commit
5 hours agoLicense
GPL-3.0
A feature flag platform that integrates with Git workflows, enabling developers to manage features directly in their codebase.
Open Source Alternative to:
Open source observability platform for modern applications
Stars
4,265Last commit
8 days agoLicense
AGPL-3.0
Uptrace is an OpenTelemetry-based platform that integrates traces, metrics, and logs to help monitor and optimize complex distributed systems.
Open Source Alternative to:
Create powerful forms with ease and flexibility
Stars
3,619Last commit
15 hours agoLicense
AGPL-3.0
A versatile open-source form builder for collecting data, managing submissions, and integrating with your favorite tools.
Open Source Alternative to:
Self-hosted photo management with full control
Stars
4,262Last commit
14 hours agoLicense
MIT
Free photo management tool that runs on your server. Upload, organize, and share photos with beautiful interface, EXIF support, and complete privacy control.
Open Source Alternative to:
Secure and elegant Matrix client for seamless conversations
Stars
3,853Last commit
7 days agoLicense
AGPL-3.0
Cinny offers a simple, elegant, and secure interface for Matrix-based conversations, protected by end-to-end encryption.
Open Source Alternative to:
Quick access to apps and files with keyboard shortcuts
Stars
4,583Last commit
20 hours agoLicense
MIT
A keyboard-driven launcher that helps you quickly find and open applications, files, and bookmarks across Windows, macOS, and Linux
Open Source Alternative to:
Next-gen WebSockets server for real-time apps
Stars
5,633Last commit
1 year agoLicense
AGPL-3.0
Open-source, Pusher-compatible WebSockets server that's simple, fast, and resilient for building real-time applications.
Open Source Alternative to:
Create stunning data visualizations with ease
Stars
4,043Last commit
2 days agoLicense
MIT
A powerful, open-source platform for building interactive dashboards and charts from multiple data sources without coding.
Open Source Alternative to:
Feature-rich backend that runs anywhere you need it
Stars
3,750Last commit
5 months agoLicense
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:
Your digital identity, beautifully organized
Stars
3,812Last commit
1 month agoLicense
AGPL-3.0
A free, open-source link management platform for creating customizable, self-hosted link pages to showcase your online presence.
Open Source Alternative to:
Craft flexible, beautiful digital experiences with ease
Stars
3,975Last commit
21 days agoLicense
Apache-2.0
A powerful, open-source CMS for Laravel that simplifies content management with a modular approach and intuitive admin panel.
Open Source Alternative to:
Open source ecommerce platform for modern businesses
Stars
3,408Last commit
3 hours agoLicense
MIT
A flexible and customizable ecommerce solution that enables businesses to build responsive online stores with advanced features and automation capabilities.
Open Source Alternative to:
Effortlessly split expenses with friends and roommates
Stars
2,872Last commit
23 hours agoLicense
MIT
A user-friendly app for tracking shared expenses, settling debts, and managing group finances with ease and transparency.
Open Source Alternative to:
Open source agency management tool for streamlined success
Stars
3,147Last commit
10 days agoLicense
AGPL-3.0
Worklenz is a comprehensive project management platform that helps agencies organize tasks, track resources, and boost productivity.
Open Source Alternative to:
Complete customer relationship management made simple
Stars
3,269Last commit
16 hours agoLicense
AGPL-3.0
Open-source CRM software for managing customers, companies, projects and opportunities. Intuitive interface with cloud and self-hosted options available.
Open Source Alternative to:
Flexible CMS for custom digital experiences
Stars
3,601Last commit
3 hours agoLicense
Unknown
Build custom websites with a user-friendly CMS that puts content first. Features flexible architecture, GraphQL API, and powerful ecommerce capabilities.
Open Source Alternative to:
Transform any TV into professional digital signage
Stars
3,649Last commit
18 hours agoLicense
Unknown
Free open-source digital signage software that turns Raspberry Pi or old PCs into powerful display solutions. Manage images, videos, and web content easily.
Open Source Alternative to:
Effortless inventory management for modern businesses
Stars
2,982Last commit
18 hours agoLicense
AGPL-3.0
Simplify asset tracking, boost productivity, and gain real-time insights with our user-friendly, open-source inventory solution.
Self-hosted social media management without limits
Stars
3,524Last commit
5 months agoLicense
MIT
Create, schedule, and manage social media content from your own server with no subscription fees or usage restrictions.
Open Source Alternative to:
Stripe payments, usage tracking, and paywalls in 3 functions
Stars
2,648Last commit
12 hours agoLicense
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:
Monitor, debug, and scale LLM applications with ease
Stars
2,708Last commit
1 day agoLicense
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:
Secure, decentralized cloud storage for your data
Stars
3,276Last commit
2 days agoLicense
AGPL-3.0
Storj offers a distributed cloud storage platform with enhanced security, global performance, and significant cost savings compared to traditional providers.
Open Source Alternative to:
InfluxDB – The purpose-built time series platform for high-velocity ingestion and real-time queries at scale.
Openlane
CodeRabbit
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