
DeveloperTools.Tech
JSON Formatter & Validator
DevTools Advanced
JSONFormatter.org
Diff Checker
FreeFormatter
JSON Editor Online
SmallDevTools
DevFinanceTools
Omni Calculator
calculator.net
Build vs. Buy Calculator
DeveloperToolStack
DevNestTools
DevTools Advanced
DevTools.fit
DevFinanceTools is a collection of free, no-signup calculators for the money side of building software and freelancing. Everything runs in your browser — no account, no tracking beyond basic page-view analytics — and every tool shows its formulas and benchmarks so you can check the maths yourself.
Calculators
There are also short plain-English guides on the topics behind the tools.
DeveloperTools.Tech
DevFinanceToolsJSON Formatter & Validator - The JSON Formatter was created to help with debugging.
Omni Calculator - Helping you make rational decisions, one calculation at a time.
DevTools Advanced - A collection of developer tools in one place in your browser
calculator.net - Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
JSONFormatter.org - Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON
Build vs. Buy Calculator - Should you build an internal tool? Or just buy it?