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Open Source Projects using npm

A curated collection of the 344 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.

Zero trust network access that's better than VPN
  • Stars

    23,137
  • Last commit

    4 hours ago
  • License

    AGPL-3.0
Deploy zero trust access to infrastructure, self-hosted apps, and SaaS tools in days. Identity-aware security with seamless user experience.

Open Source Alternative to:

Create 2D and 3D games without coding, powered by AI assistance
  • Stars

    Stars growing over the last 30 days27,766
  • Last commit

    7 hours ago
  • License

    Unknown
Free, open-source game engine with visual event system, AI tutor, and one-click publishing to Steam, iOS, Android, and web platforms.

Open Source Alternative to:

Chromium browser built for sharing with AI agents
  • Stars

    Stars growing quickly over the last 30 days18,122
  • Last commit

    15 hours ago
  • License

    MIT
A Chromium-based browser that lets AI agents like Claude Code and Codex run web automation using your real logged-in sessions, without interrupting your browsing.

Open Source Alternative to:

Agentic AI framework that runs, learns, and self-corrects
  • Stars

    19,524
  • Last commit

    6 days ago
  • License

    MIT
Autonomous AI agent framework that operates on its own sandboxed computer, creates tools dynamically, manages memory, and executes multi-step workflows with full transparency.

Open Source Alternative to:

Petabyte-scale observability, without the massive bill.
  • Stars

    22,444
  • Last commit

    4 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:

Flexible e-commerce platform for modern businesses
  • Stars

    23,460
  • Last commit

    6 hours ago
  • License

    BSD-3-Clause
Headless, API-first e-commerce solution with powerful features for customization, scalability, and seamless integration across channels.

Open Source Alternative to:

Lightning-fast, typo-tolerant search engine for all
  • Stars

    27,014
  • Last commit

    11 hours ago
  • License

    GPL-3.0
Open-source search solution offering blazing speed, typo tolerance, and effortless scalability for developers and businesses.

Open Source Alternative to:

Python-native workflow orchestration for data and ML teams
  • Stars

    24,046
  • Last commit

    3 hours ago
  • License

    Apache-2.0
Orchestrate data pipelines, ML jobs, and agent workflows in plain Python with automatic retries, scheduling, and a unified UI for every run across your infrastructure.

Open Source Alternative to:

Infrastructure as code in your favorite language
  • Stars

    25,799
  • Last commit

    3 hours ago
  • License

    Apache-2.0
Pulumi enables developers to define and manage cloud infrastructure using familiar programming languages instead of domain-specific languages.

Open Source Alternative to:

Cross-platform terminal with AI built in
  • Stars

    22,549
  • Last commit

    3 days ago
  • License

    Apache-2.0
Enhance your terminal with AI, file previews, and web browsing. Available on MacOS, Linux, and Windows.

Open Source Alternative to:

Self-hosted personal finance manager with double-entry bookkeeping
  • Stars

    24,949
  • Last commit

    2 days ago
  • License

    AGPL-3.0
Track transactions, budgets, and accounts with a double-entry system, multi-currency support, rule engine, and REST API. Fully self-hostable.

Open Source Alternative to:

Fast, private browser that puts you first
  • Stars

    23,936
  • Last commit

    7 hours ago
  • License

    MPL-2.0
A secure web browser that blocks ads and trackers, protects privacy, and loads pages faster while saving data and battery life.

Open Source Alternative to:

Collect, transform, and route logs and metrics in one tool
  • Stars

    22,737
  • Last commit

    3 hours ago
  • License

    MPL-2.0
Rust-built observability pipeline tool that collects, transforms, and routes logs and metrics across 47 sources and 62 sinks with no runtime dependencies.

Open Source Alternative to:

Self-hosted music streaming for your personal collection
  • Stars

    24,265
  • Last commit

    13 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:

Serverless Postgres for modern applications
  • Stars

    23,231
  • Last commit

    2 months ago
  • License

    Apache-2.0
Cloud-native, auto-scaling Postgres with instant branching, bottomless storage, and pay-per-use pricing

Open Source Alternative to:

Turn production traffic into regression tests, no code changes
  • Stars

    18,661
  • Last commit

    7 hours ago
  • License

    Apache-2.0
Captures real API traffic and dependency calls via eBPF to generate tests and mocks automatically, then replays them in CI to catch regressions before they ship.

Open Source Alternative to:

Task manager with time tracking, focus mode, and deep work tools
  • Stars

    Stars growing over the last 30 days23,016
  • Last commit

    4 hours ago
  • License

    MIT
Privacy-first task manager combining task lists, Kanban, Pomodoro timers, time tracking, and integrations with GitHub, GitLab, and Jira. No account required, works offline.

Open Source Alternative to:

Fast, secure, offline API client with Git integration
  • Stars

    19,338
  • Last commit

    2 days ago
  • License

    MIT
A modern API client offering local-only data storage, Git integration, plugin extensibility, and multi-protocol support for developers.

Open Source Alternative to:

Free, private screen recording for Chrome
  • Stars

    18,793
  • Last commit

    4 hours ago
  • License

    GPL-3.0
Capture, annotate, and edit screen recordings with no limits or sign-up required. Completely private and open source.

Open Source Alternative to:

Visual project management with complete data control
  • Stars

    21,130
  • Last commit

    8 hours ago
  • License

    MIT
Open-source Kanban board solution offering visual task management, self-hosting capabilities, and robust security features for teams and individuals.

Open Source Alternative to:

Empower your digital strategy with actionable insights
  • Stars

    21,963
  • Last commit

    4 hours ago
  • License

    GPL-3.0
Comprehensive web analytics platform offering full data ownership, privacy protection, and customizable insights for data-driven decision making.

Open Source Alternative to:

Privacy-first knowledge base with any AI model you choose
  • Stars

    16,536
  • Last commit

    1 day ago
  • License

    Apache-2.0
Self-hostable NotebookLM alternative that lets teams build searchable knowledge bases from diverse sources, with support for any LLM and no data limits.

Open Source Alternative to:

Secure, open-source document signing for everyone
  • Stars

    15,489
  • Last commit

    5 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:

Open-source workflow automation for developers
  • Stars

    18,231
  • Last commit

    3 hours ago
  • License

    Unknown
Powerful, self-hosted platform for building and running workflows, scripts, and apps with code-first approach and collaborative features.

Open Source Alternative to:

Scalable open-source distributed storage system
  • Stars

    17,141
  • Last commit

    6 hours ago
  • License

    Unknown
Ceph provides unified object, block, and file storage from a single cluster built on commodity hardware.

Open Source Alternative to:

Secure password management for individuals and businesses
  • Stars

    20,426
  • Last commit

    3 hours ago
  • License

    AGPL-3.0
Bitwarden is an open source password manager that securely stores, shares, and autofills passwords across unlimited devices.

Open Source Alternative to:

AI agent runtime with encrypted enclaves for your secrets
  • Stars

    12,666
  • Last commit

    11 hours ago
  • License

    Apache-2.0
Runs AI agents inside Trusted Execution Environments on NEAR AI Cloud, keeping credentials encrypted and invisible to the model at all times.

Open Source Alternative to:

Ad-free music player that streams from multiple sources
  • Stars

    18,747
  • Last commit

    12 hours ago
  • License

    AGPL-3.0
Open-source desktop music player for Windows, macOS, and Linux. Search artists and tracks across multiple sources, build playlists, and listen without ads or tracking.

Open Source Alternative to:

High-performance time series database for metrics and logs
  • Stars

    17,887
  • Last commit

    4 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:

Open source headless commerce with REST API, no platform fees, built for B2B and marketplaces
  • Stars

    15,764
  • Last commit

    3 hours ago
  • License

    BSD-3-Clause
Headless eCommerce platform with REST API, TypeScript SDK, and Next.js storefront. Handle B2B, multi-vendor marketplaces, and cross-border commerce. Self-hosted, open source, zero fees.

Open Source Alternative to:

Your open-source personal assistant for server automation
  • Stars

    17,595
  • Last commit

    11 hours ago
  • License

    MIT
Leon is an AI-powered virtual assistant that lives on your server, automating tasks and managing your digital life with privacy and customization.

Open Source Alternative to:

Understand your audience with privacy-first analytics.
  • Stars

    13,140
  • Last commit

    8 hours ago
  • License

    AGPL-3.0
Get next-gen, open-source, and cookieless web analytics. Understand user behavior with session replays, real-time data, and web vitals. GDPR/CCPA compliant.

Open Source Alternative to:

Classic, agile, or hybrid project management, self-hosted
  • Stars

    16,518
  • Last commit

    3 hours ago
  • License

    GPL-3.0
Full-featured project management platform with Gantt charts, agile boards, time tracking, and team collaboration. Self-host or use managed cloud hosting.

Open Source Alternative to:

Secure, customizable identity infrastructure for developers
  • Stars

    15,354
  • Last commit

    6 hours ago
  • License

    AGPL-3.0
ZITADEL provides a comprehensive identity management solution with easy APIs, customizable workflows, and serverless deployment options.

Open Source Alternative to:

Visual database for workflow automation across apps
  • Stars

    15,639
  • Last commit

    1 month ago
  • License

    AGPL-3.0
AITable.ai offers a visual database platform that simplifies workflow automation and connects to over 6,000 apps through integrations like Zapier and Make.

Open Source Alternative to:

Common layer for composing and governing AI agents
  • Stars

    Stars growing over the last 30 days10,933
  • Last commit

    3 hours ago
  • License

    Apache-2.0
Meta-harness that sits above Claude Code, Codex, and other AI agents to add policy enforcement, sandboxing, and real-time collaborative sessions.

Open Source Alternative to:

High-performance time-series database for massive data scale
  • Stars

    17,454
  • Last commit

    4 hours ago
  • License

    Apache-2.0
Open-source time-series database offering massive ingestion throughput, millisecond queries, and SQL extensions, designed for optimal performance at any hardware scale.

Open Source Alternative to:

Zero-knowledge encrypted notes that sync across all devices
  • Stars

    14,804
  • Last commit

    5 hours ago
  • License

    GPL-3.0
End-to-end encrypted note-taking app with zero-knowledge architecture, cross-device sync, web clipper, and a self-hostable sync server.

Open Source Alternative to:

Secure, customizable authentication for your applications
  • Stars

    15,337
  • Last commit

    5 hours ago
  • License

    Unknown
Open-source authentication solution offering flexible, self-hosted user management with advanced features and easy integration.

Open Source Alternative to:

Ultra-fast data transformation for AI with lineage
  • Stars

    11,728
  • Last commit

    17 hours ago
  • License

    Apache-2.0
Open-source ETL framework built in Rust for AI workloads. Features incremental processing, data lineage, and observability tools for semantic search and RAG applications.

Open Source Alternative to:

Build full-stack apps with TypeScript and real-time sync
  • Stars

    12,733
  • Last commit

    4 days ago
  • License

    Unknown
Open-source reactive database that keeps your web and mobile apps in sync. Write everything in TypeScript with built-in auth, cron jobs, and AI integration.

Open Source Alternative to:

Real-time analytics database for sub-second OLAP queries
  • Stars

    14,089
  • Last commit

    8 hours ago
  • License

    Apache-2.0
Columnar, time-indexed analytics database built for streaming and batch data at scale, handling billions to trillions of rows with millisecond query response times.

Open Source Alternative to: