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Browse 153 npm Packages on AlternativeTo.
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- Open Source
Rslib is a library development tool that leverages the well-designed configurations and plugins of Rsbuild, empowering library developers to take advantage of the extensive knowledge and ecosystem of webpack and Rspack.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Self-Hosted
- Typescript
- JavaScript
- npm
- Node.JS

Are you tired of spending endless hours coding and maintaining custom APIs for your applications? Try GraphJin, a totally new way to building complex database backed apps 100X faster.
Cost / License
- Free
- Open Source (Apache-2.0)
Platforms
- Go (Programming Language)
- Node.JS
- npm
- Self-Hosted
- Mac
- Linux
- Homebrew
Vezlo is an open-source AI Assistant SDK for SaaS applications. It transforms your codebase into an intelligent knowledge base with auto-generated documentation, semantic search, and a production-ready API server.
Cost / License
- Free Personal
- Open Source
Platforms
- Self-Hosted
- JavaScript
- npm
dmux is a tool for running multiple coding agents (Claude Code, Codex, or OpenCode) in parallel using tmux and git worktrees. It provides hooks to automate every portion of the worktree lifecycle, supports multiple projects in the same session, as well as multiple worktrees...


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Cost / License
- Free
- Open Source
Platforms
- JavaScript
- Typescript
- Self-Hosted
- npm
VoltAgent is an open-source TypeScript framework that acts as this essential toolkit. It simplifies the development of AI agent applications by providing modular building blocks, standardized patterns, and abstractions.


Objection.js is an ORM for Node.js that aims to stay out of your way and make it as easy as possible to use the full power of SQL and the underlying database engine while still making the common stuff easy and enjoyable.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Node.JS
- Self-Hosted
- npm


Per-component Internationalisation solution for JS application focusing on scalability. Type-Safe. Translate with AI. Edit Visually.
Cost / License
- Free
- Open Source (Apache-2.0)
Platforms
- Self-Hosted
- JavaScript
- Typescript
- npm
- Visual Studio Code



Eta is a lightweight, embedded, pluggable, and super-fast JS template engine. Developed as an alternative to EJS, Eta is more lightweight, faster, and solves several parsing problems (like closing delimiters inside strings, multi-line comments, and left whitespace trimming) with...
Cost / License
- Free
- Open Source (MIT)
Platforms
- Online
- JavaScript
- Node.JS
- npm

Sharing your work in progress shouldn't require setting up a Vercel project or pushing to a branch for a preview deploy. sher is a CLI that builds your frontend project and gives you a live preview URL in seconds, so you can just send a link instead. It works with Vite, Next.
Cost / License
- Freemium
- Open Source (AGPL-3.0)
Platforms
- npm
- Self-Hosted

Chat with Codebuff to edit your codebase. It's a coding agent that can iterate and run terminal commands, just like a real engineer! We are going up-market from Cursor, starting at a $49/mo price point.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Mac
- Windows
- Linux
- npm
- JavaScript
Tamagui lets you share more code between web and native apps without sacrificing the two things that typically suffer when you do: performance and code quality.



This package is an open source version of GitHub’s closed-source PrettyLights project (more on that later). It supports 600+ grammars and its extremely high quality. It uses TextMate grammars which are also used in popular editors (SublimeText, Atom, VS Code, &c).
Cost / License
- Free
- Open Source (MIT)
Platforms
- Self-Hosted
- npm

Drop one web component into your SaaS and give users a full drag-and-drop email editor. Framework-agnostic, white-label ready.
Cost / License
- Freemium
- Proprietary
Platforms
- JavaScript
- Typescript
- npm
- Self-Hosted

µJS intercepts links and form submissions, fetches pages via AJAX, and swaps fragments of the DOM. Single <script> tag, one call to mu.init(). No build step, no dependencies.







































































