Alternatives

Products that do what JSONL(JSON Lines) Editor for OpenAI does

Visual editor for GPT fine-tuning datasets

1. 1
   JSONLify–JSONL Editor 4 GPT Fine-tuning▲2

   Edit and format JSONL datasets for GPT training instantly

   2025

2. 2
   Power JSON Editor▲77

   A one-stop-shop tool for JSON processing on Mac

   2022

3. 3JI
   jnv: interactive JSON filter using jq▲373

   2024 · github.com

4. 4AJ
   Agents.json – OpenAPI Specification for LLMs▲212

   Hey HN, we’re building an open specification that lets agents discover and invoke APIs with natural language, built on the OpenAPI standard. agents.json clearly defines the contract between LLMs and API as a standard that's open, observable, and replicable. Here’s a walkthrough of how it works: https://youtu.be/kby2Wdt2Dtk?si=59xGCDy48Zzwr7ND. There’s 2 parts to this: 1. An agents.json file describes how to link API calls together into outcome-based tools for LLMs. This file sits alongside an OpenAPI file. 2. The agents.json SDK loads agents.json files as tools for an LLM that…

   2025 · github.com

5. 5JF
   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

6. 6GJ
   GPT-JSON – Structured and typehinted GPT responses in Python▲174

   Hey HN, I've been using GPT a lot lately in some side projects around data generation and benchmarking. During the course of prompt tuning I ended up with a pretty complicated request: the value that I was looking for, an explanation, a criticism, etc. JSON was the most natural output format for this but results would often be broken, have wrong types, or contain missing fields. There's been some positive movement in this space, like with jsonformer (https://github.com/1rgs/jsonformer) the other day. But nothing that was plug and play with GPT. This library consolidates…

   2023 · github.com

7. 7
   JSON Editor & Analyzer▲5

   JSON made simple, powered by AI

   Jan 2026 · json-analyzer.netlify.app

8. 8JS
   JSON-Splora, a gui for editing, visualizing, and manipulating JSON data▲54

   2016 · github.com

9. 9
   FSET▲93

   A JSON Schema editor, no more writing json schema by hand

   2021

10. 10IC
    I coded my own JSON translation tool to easily localize my side project▲43

    Hi HN, I’m Joan, the developer of Quicklang. I made this app to easily translate and keep in sync all my localization JSON files for my side projects. While searching online for a similar tool, I only found enterprise solutions that do not allow direct editing of JSON files. I used to use ChatGPT to translate the JSON translation file changes before coding Quicklang. However, I realized that ChatGPT only allows you to input short content for translation into another language (even if you provide a .json file), and each time I had to request translations for one language at a time. So, I…

    2024 · quicklang.app

11. 11OJ
    Online JSON Browser, Editor▲20

    2022 · jsonhero.io

12. 12HA
    hulk, an in-browser JSON editor▲25

    2013 · github.com

13. 13CI
    ChatGPT-i18n – Translate websites' locale json files with AI assistance▲92

    I build this app because I was tired of using Google Translate to translate my locale files (i18n). I wanted to use a more efficient and accurate translation tool. ChatGPT, however, always break my json and cannot translate large contents. So I build this app to solve these problems. Hope it can save your time. github: https://github.com/ObservedObserver/chatgpt-i18n online app: https://chatgpt-i18n.vercel.app/

    2023 · github.com

14. 14
    Visual JSON Editor▲8

    Free, visual JSON editor - Validation, Type Support etc

    Nov 2025

15. 15
    JSON Kit▲10

    Fix broken AI JSON and 6 more JSON tools, all in-browser

    May 2026 · jsonkit.co

16. 16
    JSONL Gazelle▲7

    Fast viewer / editor for JSONL files

    Oct 2025

17. 17
    Web2JSONL▲6

    Web2JSONL – Convert Websites to JSONL for AI Model Training

    Nov 2025 · web2jsonl.vercel.app

18. 18DA
    Derulo, a tool for manipulating JSON files▲41

    2014 · github.com

19. 19SV
    Simple visual JSON editor as an AngularJS directive▲15

    2013 · mb21.github.io

20. 20EJ
    Editor.js – the new open-source editor with clean JSON output▲11

    2019 · codex.so

21. 21
    Zen-JSON Pro▲4

    Ultra-fast, privacy-first, AI Powered JSON Viewer & Editor

    Jun 2026 · jsonviewer.rusting.dev

22. 22JM
    JSON5 — modern JSON▲64

    2012 · github.com

23. 23CL
    Command-line JSON processing tool▲32

    2018 · github.com

24. 24AE
    An extensible JSON viewer, editor, formatter, validator and more▲10

    2019 · github.com

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