Dev tools · alternatives · 2026

Jam API is a developer tool that converts any website into a JSON API by using CSS selectors to extract data. Launched in 2016, it allows developers to quickly access structured data from web pages without building… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. Jam API, turn any site into a JSON api using CSS selectors launched in 2016; newer entries below may have overtaken it.

1. 1
   Jam API▲116

   Parse web pages using CSS query selectors

   2016 · github.com · its alternatives →

2. 2
   Jam▲461

   Collaboratively work on your website right from the page.

   2020 · jam.dev · its alternatives →

3. 3
   Jam API▲7

   Turn any site into a JSON accessible API

   2016 · jamapi.xyz · its alternatives →

4. 4
   Tabstack Dev Tools▲319

   Ditch your scraper. Make one API call with any tool.

   Jun 2026 · tabstack.ai · its alternatives →

5. 5
   Turn any website into an API (for those who miss Kimono)free tier, from $19/mo▲332

   Web scraping made simple — extract data with our free Chrome extension and powerful cloud platform. Turn websites into structured data at scale, via dashboard or API.

   2019 · simplescraper.io · its alternatives →

6. 6
   Jam Edit▲405

   Edit your website, right from the page.

   2021 · jam.dev · its alternatives →

7. 7TA
   Turn any website into an API HackMIT 2013▲36

   Select anything on a website. If it is part of a table or a list, you get a URL which you can GET for a JSON representation of that list or table. Basically we are making an API for every website whether they like it or not.

   2013 · ec2-54-211-79-18.compute-1.amazonaws.com · its alternatives →

8. 8
   Simple Scraper▲556

   Turn any website into an API in just a few seconds.

   2019 · simplescraper.io · its alternatives →

9. 9
   Jampack – Optimizes static websites as a post-processing step▲328

   Hi! Jampack is a post-processing tool that takes the output of your Static Site Generator (aka SSG) and optimizes it for best user experience and best Core Web Vitals scores. As of today it can: - Optimize local images, CDN images or external images - Optimize above-the-fold vs below-the-fold - Limit images max width - Inline critical CSS - Prefetch links on scroll - Improve browser compatibility - Auto-fixes HTML issues - Warn for HTML accessibility issues - Compress all assets in the end It processes directly the static output so it's compatible with any SSG or framework. We are…

   2024 · github.com · its alternatives →

10. 10JB
    JSON Browse – Fetch, filter and manipulate your JSON inside the browser▲138

    2017 · jsonbrowse.com · its alternatives →

11. 11
    JSON Api▲175

    Hosted API's to develop your app for free 🙌

    2020 · jsonapi.co · its alternatives →

12. 12
    Wibbly▲84

    Browser automation API

    2021 · its alternatives →

13. 13JI
    JSON.is▲100

    2016 · json.is · its alternatives →

14. 14
    JSONverify▲92

    A web tool that validates and format JSON objects

    2021 · jsonverify.com · its alternatives →

15. 15
    JSONBason▲15

    I've been at it again, just sharing my simple JSON data inspection tool, love webdev and single page apps, this one took 4 days and was a lot of fun. The code is not obfuscated so you can inspect it and see how it works (very simple, server side is even more simple) Pretty much just do a POST of your JSON data from within your code and it will convert it into a basic table for instant search and sort. Made with love for the fun of it, no ads, no paid anything, it's totally free. Please only send in sanitized/test data only, this is meant to help make webdev a bit easier and more fun.…

    2025 · jsonbason.com · its alternatives →

16. 16
    JSON Master▲82

    Format, repair, convert, and visualize JSON, XML, YAML, CSV, and TOML. Free developer platform with advanced visualizers and AI-powered syntax repair.

    2020 · jsonmaster.com · its alternatives →

17. 17AP
    AllOrigins – Pull content from any page as JSON via API▲46

    2016 · allorigins.pw · its alternatives →

18. 18JE
    JSONP - enable cross-domain requests to any JSON API (w/ AJAX)▲51

    2012 · jsonp.jit.su · its alternatives →

19. 19
    ApiFrom▲9

    Point, click, and get an API from any website. Instantly.

    2025 · apifrom.com · its alternatives →

20. 20CJ
    Chunkify.js – A functional API to unblock your JavaScript thread▲29

    2015 · yangmillstheory.github.io · its alternatives →

21. 21
    JSON-to-JSON mapping done easily▲14

    2019 · github.com · its alternatives →

22. 22BD
    Browser debugging tool an ex-Cloudflare team has been building for 4yrs▲12

    Hey HN, I wanted to show you a product a small team and I have been working on for 4 years. It’s called Jam (jam.dev) and it prevents product managers (like I used to be) from being able to create completely vague and un-reproducible bug tickets (like I used to create). It’s actually really hard as a non-engineer to file useful bug tickets for engineers. I used to write in the ticket that something didn’t work— only to lead to a ton of confusion by the engineer what I meant by “didn’t work”. Was the button unresponsive? Did the page crash? Did it return an error? Or like sometimes I thought…

    2024 · its alternatives →

23. 23
    PDFtoJson.dev▲21

    Parse PDF to Json with AI and BYO-JSON-Schema

    2025 · pdftojson.dev · its alternatives →

24. 24
    jss, a jq-like CL tool for manipulating JSON files using CSS selectors▲10

    JSON processing command line tool based on JSONSelect (CSS-like selectors for JSON) - danvk/jss

    2014 · 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 →