DevToys - A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.

IT Tools - IT Tools is a free and open-source collection of handy online tools for developers & people working in IT.

iLovePDF - Premium online PDF tool set

Smallpdf - PDF document management and conversion suite

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

10015.io - 10015.io is an all-in-one toolbox offering many tools from various categories.