JavaScript Libraries and Tools Page 15 of 17

Browse 404 JavaScript Libraries and Tools on AlternativeTo.

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  1. TanStack icon
     Like

    Headless, type-safe, composable tools for building modern web applications that work naturally for developers and reliably for agents.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • JavaScript
    • Typescript
    • npm
    TanStack screenshot 1
  2. Rslib icon
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    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
    Rslib screenshot 1
    2 alternatives
  3.  Like

    Vivus is a lightweight JavaScript class (with no dependencies) that allows you to animate SVGs, giving them the appearance of being drawn. There are a variety of different animations available, as well as the option to create a custom script to draw your SVG in whatever way you...

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Self-Hosted
    • JavaScript
    11 alternatives
  4. MCPFinder icon
     Like

    MCP server that finds MCP servers. Discovers, evaluates, and installs 25K+ MCP servers across Official Registry, Glama, and Smithery for any AI client (Claude, Cursor, Cline, Windsurf).

    Cost / License

    Platforms

    • Claude Code
    • Cursor
    • Windsurf
    • JavaScript
    • Typescript
    • npm
    MCPFinder screenshot 1
    8 alternatives
  5. APIdoc icon
     Like

    Inline Documentation for RESTful web APIs.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted
    • JavaScript
    APIdoc screenshot 1
    APIdoc screenshot 1
    5 alternatives
  6. Threlte icon
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    Threlte is a Svelte library that simplifies creating 3D apps for the web. It provides a declarative, type-safe, reactive and interactive API out-of-the-box.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Self-Hosted
    • JavaScript
    Threlte screenshot 1
    15 alternatives
  7. OpenUI5 icon
     1 like

    OpenUI5 is an open source JavaScript UI library, maintained by SAP and available under the Apache 2.0 license. OpenUI5 lets you build enterprise-ready web applications, responsive to all devices, running on almost any browser of your choice.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Self-Hosted
    • JSON
    • JavaScript
    • jQuery
    Shopping cart demo application
    Bulletin board demo application
    8 alternatives
  8.  Like

    A lightweight dependency-free select box replacement written in vanilla JavaScript. Similar to Select2 and Chosen without the dependencies.

    Cost / License

    • Free
    • Open Source (MIT)

    Alerts

    • Discontinued

    Platforms

    • Online
    • JavaScript
    7 alternatives
  9. Vezlo icon
     Like

    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
  10. Material design calendar and date picker. React, Vue and plain JS components that make scheduling simple and elegant in your web project.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Self-Hosted
    • React
    • JavaScript
    • Vue.js
    Schedule-X screenshot 1
    2 alternatives
  11. A lightweight Markdown editor library with perfect WYSIWYG alignment using an invisible textarea overlay technique. Includes optional toolbar. ~45KB minified with all features.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Self-Hosted
    • JavaScript
    • React
    • Vue.js
    OverType Markdown Editor screenshot 1
    OverType Markdown Editor screenshot 1
    2 alternatives
  12.  Like

    Tiny experiment which generates a particle Sphere on HTML5 canvas .

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • JavaScript
    • Debian
    Sphere screenshot 1
    Sphere screenshot 1
    Sphere screenshot 2
    +1
    Sphere screenshot 3
  13. Skrun icon
     Like

    Turn any Agent Skill (SKILL.md) into a callable API via POST /run. Multi-model, stateful, open source.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • JavaScript
    • Typescript
    • npm
    Skrun screenshot 1
    1 alternatives
  14. Vault CMS icon
     Like

    Vault CMS Is an open-source headless content management system that turns Obsidian into a publishing platform for Astro.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Self-Hosted
    • JavaScript
    Vault CMS screenshot 1
    Vault CMS screenshot 1
    Vault CMS screenshot 2
    +1
    Vault CMS screenshot 3
    6 alternatives
  15. Gleap icon
     Like

    Your all-in-one customer feedback tool for apps and websites. Fix bugs 10x faster with flawless reports, connect with your users one-on-one, discover what your users really want with feature requests and ratings.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Android
    • iPhone
    • React
    • JavaScript
    • AngularJS
    • Software as a Service (SaaS)
    • React Native
    • Vue.js
    • Flutter
    Gleap provides developers with all the tools they need to reproduce bugs 10x faster.
    Have your team and users vote on feature requests with your very own roadmap board.
    Get an overall indication of how happy your users are with your website or app.
    7 alternatives
  16. js-dos icon
     Like

    The best API for running dos programs in browser.

    Cost / License

    • Free
    • Open Source

    Platforms

    • JavaScript
    • Typescript
    • Self-Hosted
    • npm
  17. JavaScript library to draw smooth curves and straight lines with your mouse, finger or any pointing device.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Self-Hosted
    • JavaScript
    • Typescript
    Lazy Brush screenshot 1
  18. Rollout icon
     Like

    Free static site hosting for developers. Deploy static sites with a single command. Powered by Cloudflare's Global CDN.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • JavaScript
    • Node.JS
    • npm
    • Self-Hosted
    Rollout screenshot 1
  19. A simple but powerful deobfuscator to remove common JavaScript obfuscation techniques

    Cost / License

    Platforms

    • JavaScript
    • Online
    deobfuscate.io screenshot 1