Dev tools · alternatives · 2026

24 alternatives to Semantics3's new visual JSON playground

Data needn’t be dry JSON. Visualize product data in RealTime

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. Semantics3's new visual JSON playground launched in 2017; newer entries below may have overtaken it.

1. 1
   JSON For You – Visualize JSON in graph or table views▲211

   After two years of improvement, I think it's time to share it with you all. Here’s a quick overview: - Common features include validation, formatting, minification, and more. - Visualize JSON in a graph or table view. - Structured comparison with fallback to text comparison. - Navigate though JSON using JSON pointer. - Supports jq. Would love to hear the community's questions, thoughts and comments!

   2024 · github.com · its alternatives →

2. 2
   I created a lightweight JavaScript library to visualize JSON as a graph▲62

   Effortlessly visualize JSON structures as dynamic tree diagrams - The-01-Company/jsontr.ee

   2024 · github.com · its alternatives →

3. 3
   The Changelog - #189: JSON API with Yehuda Katz▲66

   Yehuda's start as a programmer and the spec for building API

   2016 · changelog.com · its alternatives →

4. 4
   JSON Visualization▲6

   a tool for json visualization

   2024 · its alternatives →

5. 5
   Datamatic▲156

   Editable data visualizations for the web

   2017 · datamatic.io · its alternatives →

6. 6
   Data Viz with JS (book)▲81

   Free chapters from a book by Stephen A. Thomas

   2014 · jsdatav.is · its alternatives →

7. 7
   Answers by Context.devfree tier, from $25/mo▲198

   Give it a research task + the JSON shape you want back.

   Sep 2026 · docs.context.dev · its alternatives →

8. 8
   Structura▲100

   Visualize and edit JSON like Lego blocks

   2025 · structura-json.netlify.app · its alternatives →

9. 9
   JSON Viewer▲8

   Bells and Whistles for JSON

   2016 · codebeautify.org · its alternatives →

10. 10
    JSON Crack▲70

    Simple visualization tool for your JSON data.

    2022 · jsoncrack.com · its alternatives →

11. 11
    JSON Parser▲8

    Awesome way to view JSON.

    2018 · jsonformatter.org · its alternatives →

12. 12
    JsonTree, a tool for turning JSON data into a collapsible html tree▲9

    A lightweight vanilla Javascript micro-library for making collapsible trees with JSON - MaxLeiter/jsonTree

    2016 · github.com · its alternatives →

13. 13
    Object-visualizer – Chrome-console-like JSON object visualizer in DOM▲45

    Vue JSON inspector with Chrome-like theme. Contribute to soc221b/object-visualizer development by creating an account on GitHub.

    2020 · github.com · its alternatives →

14. 14
    JSONUIView▲14

    Simple API Client and JSON Visualizer

    2025 · jsonuiview.web.app · its alternatives →

15. 15
    JSON For You▲5

    Fastest JSON visualization and processing tool

    2024 · json4u.com · its alternatives →

16. 16
    Victory▲7

    ReactJS library for building interactive data visualizations

    2016 · nearform.com · its alternatives →

17. 17
    jsonbin.org▲13

    A personal JSON store as a RESTful service

    2017 · jsonbin.org · its alternatives →

18. 18
    Searchable compression for JSON – ~99% page skip and sub-ms lookups▲15

    Problem JSON/NDJSON is everywhere in data platforms, but compression usually breaks searchability. You either keep queryable raw stores (high I/O/egress) or compress into gz/zstd blobs (cheap to store, painful to probe). The “cloud tax” shows up as wasted reads. What I built (SEE — Semantic Entropy Encoding) A schema-aware, searchable compression codec for JSON that keeps exists/pos lookups fast while still compressing. Internals: structure-aware delta + dictionaries, a PageDir + mini-index to jump to relevant pages, and a tuned Bloom filter that skips ~99% of pages.…

    2025 · github.com · its alternatives →

19. 19
    JSON Flow▲14

    Transform JSON into interactive graphs in VSCode

    2024 · marketplace.visualstudio.com · its alternatives →

20. 20
    JSON Pretty Print▲8

    For JSON Lovers

    2017 · jsonformatter.org · its alternatives →

21. 21
    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 →

22. 22
    JSON Design Data▲4

    Better Dummy Data for Your Applications and Designs

    2016 · uxpower.tools · its alternatives →

23. 23
    Online JSON Viewer▲7

    Web based online JSON Viewer

    2016 · jsonviewer.stack.hu · its alternatives →

24. 24
    See – searchable JSON compression (offline 10-min demo)▲5

    Hi HN, I’m building SEE (Semantic Entropy Encoding): a searchable compression format for JSON/NDJSON. Goal: reduce the “data tax” (storage/egress) and “CPU tax” (decompress/parse) by keeping JSON searchable while compressed, with page-level random access. I just published a proof-first evaluation release: Offline DEMO ZIP (~10 min): prints compression ratios + skip rates + lookup latency (p50/p95/p99) DD pack: audit/repro evidence (decode mismatch=0, extended mismatch=0, audit PASS) Latest release:…

    Feb 2026 · gitlab.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 →