Dev tools · alternatives · 2026

24 alternatives to Tooly

I kept opening online JSON formatters and getting buried in ads and popups. So I made a clean version with a few tools I actually use daily – JSON formatter with syntax highlighting, Base64 encoder/decoder, JWT decoder, text diff, and timestamp converter. Everything runs client-side. No tracking, no server calls, no signup walls. Built with React 19 and TypeScript. It's open source: https://github.com/chken007/tooly My 5-year-old helped name it. She insisted on "Tooly" and I couldn't argue with that logic. Open to feedback – especially if you spot bugs or have…

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1
JSONSift▲10
Free developer tools that run entirely in your browser
Jun 2026 · jsonsift.com · its alternatives →
2
JSON Formatter and Validator▲81
Useful JSON online tools
2022 · jsonformatter.net · its alternatives →
3
Online JSON Formatter Tool▲12
json formatter online, online json tool, format json
2025 · its alternatives →
4
JSON Knife▲4
30 free developer tools. No ads, no signup, no BS.
Feb 2026 · tools.shanecode.org · its alternatives →
5
JSON Formatter▲2
Beautify, validate & convert JSON — free, no login and fast.
May 2026 · formatjson.online · its alternatives →
6
JSON Playground Tools▲5
Modern Developer Toolkit
Jan 2026 · jsonplayground.online · its alternatives →
7
Free JSON Formatter▲3
Format, validate and minify JSON instantly
Jun 2026 · tools.bmjapps.in · its alternatives →
8
JSON Formatter Tool▲2
A clean, minimal JSON formatter for daily coding
Dec 2025 · jsonformatteronline.net · its alternatives →
9
JSON Dev Tools▲2
Free & Private JSON Tools That Run in Your Browse
May 2026 · jsondevtools.org · its alternatives →
10
Toolaska▲7
Free online developer tools | json, encoding, code compare
2025 · toolaska.com · its alternatives →
11
cleancode.tools▲8
Json formatter, base64 decoder, time converter
2025 · cleancode.tools · its alternatives →
12
snaptxt.app▲4
50+ dev tools, all run in your browser
Jun 2026 · snaptxt.app · its alternatives →
13
ninjas.me▲8
Json formatter
2025 · its alternatives →
14
Simple Tools▲13
Simple JSON Tool with Repair & AI Fix!
2025 · tools.mingxiangzhe.com · its alternatives →
15
Fast, secure JSON Formatter with side-by-side JSON diffing▲7
The ultimate browser-based JSON toolkit. Format, validate, minify, view, and convert JSON online with zero server uploads and 100% offline privacy.
4d ago · instantjsonformatter.com · its alternatives →
16
JSON Formatter & Validator▲6
Free online json tools with syntax highlighting
2025 · json.toolaska.com · its alternatives →
17
JSON Tools▲4
Free JSON viewer, formatter & converter in your browser
2025 · json-viewer-ce3.pages.dev · its alternatives →
18
JSON Utils▲6
Free online json formatter, validator & editor tool
2025 · onlinejsonutils.com · its alternatives →
19
JSON Parser Pro▲3
Free JSON toolkit — format, validate, diff & repair
Jul 2026 · freejsonparser.com · its alternatives →
20
JSON Viewer▲6
Free online json formatter, validator & viewer tool
2025 · jsonviewer.run · its alternatives →
21
dev101.io▲6
One box for every dev utility — runs in your browser
Jul 2026 · dev101.io · its alternatives →
22
TryDevSnip▲4
JSON, JWT & cron tools — pastes stay local
Aug 2026 · trydevsnip.com · its alternatives →
23
Dev Tools▲5
Manage Your JSON Effortlessly
2024 · toolfordev.vercel.app · its alternatives →
24
JSONLint▲7
All-in-one JSON Tools for Developers
2025 · jsolint.com · its alternatives →

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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 →