Life & fun · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Valib.js - validation library for the browser and Node.js launched in 2014; newer entries below may have overtaken it.

1. 1
   Valibot▲37

   The 1 kB schema library for TypeScript

   2025 · valibot.dev · its alternatives →

2. 2TW
   This website is valid JSON▲604

   2020 · webdatarender.com · its alternatives →

3. 3VJ
   validate.js - lightweight JavaScript form validation library▲102

   2011 · rickharrison.github.com · its alternatives →

4. 4
   Form-validation.js – JavaScript form validation library▲29

   The most customizable validation framework for JavaScript. - soc221b/form-validation.js

   2020 · github.com · its alternatives →

5. 5
   a small jQuery Form Validation library▲47

   Got bored of using other ones, so made my own. Contribute to jackfranklin/jQuery-Form-Validator development by creating an account on GitHub.

   2012 · github.com · its alternatives →

6. 6
   Atomus▲68

   A utility library for testing client-side code in Node.js

   2014 · github.com · its alternatives →

7. 7
   A new validation library for JavaScript (React, Backbone integration)▲8

   Validation library based on type combinators. Contribute to gcanti/tcomb-validation development by creating an account on GitHub.

   2014 · github.com · its alternatives →

8. 8SW
   site-wide HTML5 and CSS3 validator▲5

   2012 · markupvalidator.com · its alternatives →

9. 9
   Rust built open-sourced CLI tool for API specification validation▲23

   Stop half-done APIs! Cherrybomb is a CLI tool that helps you avoid undefined user behaviour by auditing your API specifications, validating them and running API security tests. - blst-security/cherrybomb

   2022 · github.com · its alternatives →

10. 10
    val – An arbitrary precision calculator language▲34

    Wrote this to learn more about the `chumsky` parser combinator library, rustyline, and the `ariadne` error reporting crate. Such a nice DX combo for writing new languages. Still a work in progress, but I thought I'd share :)

    2025 · github.com · its alternatives →

11. 11
    A lightweight fullstack boilerplate based on VueJS and Node.js▲24

    A lightweight boilerplate for a universal webapp based on koa, mongodb, node, vue, and webpack - yunhan0/koa-vue-fullstack

    2018 · github.com · its alternatives →

12. 12
    Legalize.js – object validation for node and the browser▲7

    JavaScript object validation for browsers + node. Contribute to paypal/legalize.js development by creating an account on GitHub.

    2015 · github.com · its alternatives →

13. 13OJ
    Objection.js – Yet another ORM for Node.js hit 1.0.0 today▲9

    An SQL friendly ORM for node.js

    2018 · vincit.github.io · its alternatives →

14. 14
    Deep Type - validate JavaScript objects and arrays using GraphQL▲8

    Validate JS objects and arrays using graphql-esque syntax - bsteephenson/Deep-Type

    2015 · github.com · its alternatives →

15. 15
    Xtypejs – Efficient data-validating pseudo types for JavaScript▲10

    Elegant, highly efficient data validation for JavaScript. - lucono/xtypejs

    2015 · github.com · its alternatives →

16. 16BV
    Bootstrap Validator▲9

    2014 · bootstrapvalidator.com · its alternatives →

17. 17
    Validator.dart – String validation and sanitization library for Dart▲6

    2014 · github.com · its alternatives →

18. 18
    An opinionated approach to have type safety in native JavaScript▲19

    Post about Avocado, a small library and pattern guide to help you with type safety and data validation in native JavaScript.

    2015 · rafelsberger.at · its alternatives →

19. 19JV
    JsDiff – Visually compare JavaScript libraries▲8

    2020 · jsdiff.dev · its alternatives →

20. 20
    V4 forms▲4

    validation

    2019 · v4f.js.org · its alternatives →

21. 21AP
    AllJS – Popular JavaScript libraries ready for tinkering▲6

    2015 · alljs.net · its alternatives →

22. 22
    Bless your JavaScript code▲19

    A Node.js package for invoking divine blessings for one's Javascript code. - rudimk/dua.js

    2017 · github.com · its alternatives →

23. 23
    A formally verified native Delta Lake implementation in Rust▲8

    A native Rust library for Delta Lake, with bindings into Python - delta-io/delta-rs

    2022 · github.com · its alternatives →

24. 24
    Vers, a tool to version data models instead of APIs▲7

    Effortless data model versioning for Javascript and Node.js - TomFrost/Vers

    2015 · github.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →