Dev tools · alternatives · 2026

24 alternatives to Jayson

Displaying the contents of a JSON file in an outline view

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. Jayson launched in 2017; newer entries below may have overtaken it.

1. 1
   Jayson▲189

   Powerful JSON viewer for iPhone and iPad

   2019 · jayson.app · its alternatives →

2. 2
   Catj – A new way to display JSON files▲388

   Displays JSON files in a flat format. Contribute to soheilpro/catj development by creating an account on GitHub.

   2019 · github.com · its alternatives →

3. 3
   OK JSON▲113

   Format and view JSON with native Mac app

   2021 · okjson.app · its alternatives →

4. 4
   LLMs can generate valid JSON 100% of the time▲854

   Outlines is a Python library that focuses on text generation with large language models. Brandon and I are not LLM experts and started the project a few months ago because we wanted to understand better how the generation process works. Our original background is probabilistic, relational and symbolic programming. Recently we came up with a fast way to generate text that matches a regex (https://blog.normalcomputing.ai/posts/2023-07-27-regex-guide...). The basic idea is simple: regular expressions have an equivalent Deterministic-Finite Automaton (DFA) representation. We…

   2023 · github.com · its alternatives →

5. 5
   Make an app by adding JSON to this app▲648

   📡 Native App over HTTP, on iOS. Contribute to Jasonette/JASONETTE-iOS development by creating an account on GitHub.

   2016 · github.com · its alternatives →

6. 6
   Jless, a command-line JSON viewer▲344

   Hey, Hacker News! Today I'm proud to release jless, a command-line JSON viewer. jless provides a JSON viewing experience similar to what you see in a browser's network tab in the developer console, but from the comfort of your terminal, with a whole suite of vim-inspired key bindings to easily manipulate your view of the data and full-text regex search. I'm sure many of you have some piped together some combination of cat, jq and less before; hopefully jless can replace that usage (hence the name). It supports newline delimited JSON too, so it can handle any output from jq. I built jless to…

   2022 · pauljuliusmartinez.github.io · its alternatives →

7. 7
   Jqview, a simple native GUI for inspecting JSON with jq▲208

   simplest possible native GUI for inspecting JSON objects with jq - fiatjaf/jqview

   2020 · github.com · its alternatives →

8. 8
   OK JSON▲104

   The ultimate JSON formatter for your Mac

   2023 · okjson.app · its alternatives →

9. 9
   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 →

10. 10
    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 →

11. 11
    JSON Viewer + Editor▲96

    Web app to view JSON strings in a tree like structure

    2023 · jsonviewer.nekonik.com · its alternatives →

12. 12
    JSON Resume▲109

    A JSON-based standard for resumes

    2014 · jsonresume.org · its alternatives →

13. 13JB
    JSON Browse – Fetch, filter and manipulate your JSON inside the browser▲138

    2017 · jsonbrowse.com · its alternatives →

14. 14
    Jb / json.bash – Command-line tool (and bash library) that creates JSON▲183

    jb is a UNIX tool that creates JSON, for shell scripts or interactive use. Its "one thing" is to get shell-native data (environment variables, files, program output) to somewhere else, using JSON encapsulate it robustly. I wrote this because I wanted a robust and ergonomic way to create ad-hoc JSON data from the command line and scripts. I wanted errors to not pass silently, not coerce data types, not put secrets into argv. I wanted to leverage shell features/patterns like process substitution, environment variables, reading/streaming from files and null-terminated data. If you…

    2024 · github.com · its alternatives →

15. 15
    Informant▲133

    Inspect files on macOS with a single click.

    2021 · github.com · its alternatives →

16. 16
    Glance▲157

    All-in-one Quick Look plugin for macOS

    2020 · github.com · its alternatives →

17. 17JM
    JSON-Menu, transform json data into a beautiful dashboard for your mac▲10

    2017 · jsonmenu.com · its alternatives →

18. 18JP
    JSON Pizza – Beautify your JSON quickly▲112

    Prettify, inspect and share your JSON data.

    2019 · json.pizza · its alternatives →

19. 19
    JSON Viewer▲8

    Bells and Whistles for JSON

    2016 · codebeautify.org · its alternatives →

20. 20
    JSON Viewer▲4

    Say goodbye to online JSON formatters.

    2020 · jsonviewer.app · its alternatives →

21. 21
    docc2json▲77

    Turn Apple DocC output into a web-friendly SDK JSON schema

    Jan 2026 · github.com · its alternatives →

22. 22
    SlimSnap▲141

    What it does: mark the element, get small JSON (element, text, position, intent) instead of the raw image.

    Jun 2026 · slimsnap.ai · its alternatives →

23. 23
    CMSJSON▲6

    The missing interface for your JSON files.

    Nov 2025 · cmsjson.com · its alternatives →

24. 24JE
    JSON Editor for macOS▲5

    2022 · theapiscout.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 →