Dev tools · alternatives · 2026

24 alternatives to v8n

The ultimate JavaScript validation library

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. v8n launched in 2018; newer entries below may have overtaken it.

1. 1VJ
   validate.js - lightweight JavaScript form validation library▲102

   2011 · rickharrison.github.com · its alternatives →

2. 2
   Form-validation.js – JavaScript form validation library▲29

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

   2020 · github.com · its alternatives →

3. 3TW
   This website is valid JSON▲604

   2020 · webdatarender.com · its alternatives →

4. 4
   V8 release v8.0▲107

   Google’s high-performance JavaScript/WebAssembly engine

   2019 · chromium.googlesource.com · its alternatives →

5. 5
   Micron.JS▲214

   A [μ] microInteraction library built with CSS and JavaScript

   2018 · webkul.github.io · its alternatives →

6. 6
   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 →

7. 7
   I finished v5 of a JVM framework I've spent spent half a decade making▲377

   ForewordJavalin is a Java and Kotlin web framework which focuses on simplicity and Java/Kotlin interoperability.It supports WebSockets and HTTP3, and it uses...

   2022 · javalin.io · its alternatives →

8. 8
   Nice-looking Python bindings to V8▲166

   Write Python APIs, then call them from JavaScript using the V8 engine. - tbodt/v8py

   2017 · github.com · its alternatives →

9. 9
   ML5.js▲249

   Friendly machine learning for the web

   2018 · ml5js.org · its alternatives →

10. 10
    ESInfer – Make JavaScript Type-Safe▲83

    Hello, folks. I'm Jiang, the author of ESInfer. I love writing Javascript because it has a prosperous ecosystem and is quick to get my hands dirty. However, sometimes it's painful when the flow is not fast to follow due to the lack of a type system. To solve this, I wrote ESInfer, a statical inference tool, to automatically type check and generate type annotations for Javascript. It works with pure Javascript without any add-ons to the language or user-space code and supports highly dynamic features, such as the modification of prototypes. It is still in the very early stage, which offers…

    2022 · esinfer.com · its alternatives →

11. 11
    v8-riscv — Port of JavaScript V8 engine to RISC-V▲123

    Port of Google v8 engine to RISC-V. Contribute to riscv-collab/v8 development by creating an account on GitHub.

    2021 · github.com · its alternatives →

12. 12
    is.js▲132

    Micro check library for programmers

    2015 · is.js.org · its alternatives →

13. 13AL
    A library to record and intercept JavaScript at runtime▲118

    2017 · maierfelix.github.io · its alternatives →

14. 14
    Monkberry – a JavaScript library for building web user interfaces▲115

    Monkberry is blazingly fast, small 1kb and simple JavaScript library for building web user interfaces.

    2016 · monkberry.js.org · its alternatives →

15. 15
    octaValidate▲69

    A client-side form validation library

    2022 · github.com · its alternatives →

16. 16
    Octavalidate▲61

    A client-side and server-side form validation library

    2022 · octagon-simon.github.io · its alternatives →

17. 17VJ
    Valib.js - validation library for the browser and Node.js▲7

    2014 · sideralis.org · its alternatives →

18. 18
    Typyn - Validation made easier & faster▲6

    Lightweight, Chainable TypeScript Validation

    Oct 2025 · typyn.pages.dev · its alternatives →

19. 19
    V4 forms▲4

    validation

    2019 · v4f.js.org · its alternatives →

20. 20
    Fastn, a JavaScript tool for building user interfaces▲47

    2015 · korynunn.github.io · its alternatives →

21. 21
    Vue-Model – Models with HTTP Actions for Vue.js▲109

    Model component for Vue.js. Contribute to aarondfrancis/vue-model development by creating an account on GitHub.

    2017 · github.com · its alternatives →

22. 22
    a18n – Automated I18n JavaScript Solution▲39

    Automated I18n solution for JavaScript/TypeScript/React - FallenMax/a18n

    2020 · github.com · its alternatives →

23. 23AJ
    A Javascript library to overcomplicate Five▲69

    2014 · jackdcrawford.github.io · its alternatives →

24. 24
    js.spec, a JavaScript implementation of clojure.spec▲96

    clojure.spec for Javascript. Contribute to prayerslayer/js.spec development by creating an account on GitHub.

    2016 · 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 →