Life & fun · alternatives · 2026

24 alternatives to Sonar

A linting tool for the web

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Sonar launched in 2017; newer entries below may have overtaken it.

1. 1
   Squints▲81

   Design tools for the live web

   Sep 2026 · squints.app · its alternatives →

2. 2SA
   Sitestencil, a new way of building websites with flexbox and gutters▲9

   2016 · sitestencil.com · its alternatives →

3. 3
   Windsock.js – A flux inspired library for building web applications▲6

   2016 · github.com · its alternatives →

4. 4
   Web Annotation▲7

   2020 · kontxt.io · its alternatives →

5. 5SI
   Sonar – Instantly evaluate and continuously monitor apps▲9

   2019 · templarbit.com · its alternatives →

6. 6AA
   ANML – A machine-first markup language for the agentic web (IETF Draft)▲7

   May 2026 · anmlfoundation.org · its alternatives →

7. 7
   Matt's DOM Utils—a modular HTML DOM library with wide browser support▲6

   2012 · fortybelow.ca · its alternatives →

8. 8SA
   Schezzle, a flexible website monitoring tool▲5

   2017 · schezzle.com · its alternatives →

9. 9
   Echo▲7

   A fast and unfancy micro web framework for Go

   2016 · labstack.com · its alternatives →

10. 10
    Monkberry▲6

    A JavaScript library for building web user interfaces

    2016 · monkberry.js.org · its alternatives →

11. 11FA
    Flow, a WebRTC/Web Audio HTML5 experiment.▲6

    2012 · trypwire.flow.jit.su · its alternatives →

12. 12SJ
    Siphon.js – A data extraction library built for scale▲8

    2016 · siphonjs.com · its alternatives →

13. 13OA
    Obelix, a simple and extensible static site generator▲8

    2020 · obelix-site-builder.github.io · its alternatives →

14. 14NS
    Not Some Cats – A collection of tools for web devs/designers▲6

    2018 · notsomecats.com · its alternatives →

15. 15MA
    Modus, a Datalog dialect for building Docker/OCI container images▲9

    2022 · modus-continens.com · its alternatives →

16. 16IQ
    Improve quality of CSS and XPath locators for browser testing▲8

    2019 · davertmik.github.io · its alternatives →

17. 17
    A framework for web component frameworks▲8

    A framework for web component frameworks

    2024 · sirpepe.github.io · its alternatives →

18. 18
    Flowstate – A Kind of Copilot for Web App▲5

    2024 · flowstate.so · its alternatives →

19. 19PW
    Progressive Web App “An Easy Programming Language”▲5

    2018 · easyprog.app · its alternatives →

20. 20AB
    Alloy – Boilerplate for building web applications with Go▲7

    2017 · growthmetrics.io · its alternatives →

21. 21DA
    Docbag – an open-source document generation library written in Java▲6

    2014 · docbag.org · its alternatives →

22. 22CW
    Coding WebIDE▲5

    2015 · coding.net · its alternatives →

23. 23FT
    Fast, turnkey static web site recipe (Terraform and Jekyll and AWS)▲6

    2021 · peterkong.com · its alternatives →

24. 24NJ
    Noise – JSON search engine library▲6

    2017 · noisesearch.org · 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 →