corntab - CRONTAB EDITING MADE SIMPLE

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

CronTool - Cron expression editor & debugger

JSON Crack - Visualize JSON into interactive graphs

Crontab Generator - Crontab Generator is one of the advanced cron generating tools that are used by top-class professionals from all over the world, making them easily describe and generate complex cron expressions in no time.

JSON Editor Online - View, edit and format JSON online