There are 3 repositories under cron-libraries topic.
JavaScript library that translates Cron expressions into human readable descriptions
Cron utils for parsing, validations and human readable descriptions as well as date/time interoperability.
A .NET library that converts cron expressions into human readable descriptions.
A Java library that converts cron expressions into human readable descriptions
A java library to work with cron specifications
A Clojure wrapper for the cron-utils library
CLI utilities for cron-utils core.
Provides means to deal with crons in a rangeset representation.