1. Rearmed JsA collection of helpful methods and monkey patches for Arrays, Objects, Numbers, and Strings in Javascript
2. Spreadsheet architectSpreadsheet Architect is a library that allows you to create XLSX, ODS, or CSV spreadsheets super easily from ActiveRecord relations, plain Ruby objects, or tabular data.
4. form builder.crDead simple HTML form builder for Crystal with built-in support for many popular UI libraries such as Bootstrap
6. sexy form.rbDead simple HTML form field builder for Ruby with built-in support for many popular UI libraries such as Bootstrap
8. active snapshotSimplified snapshots and restoration for ActiveRecord models and associations with a transparent white-box implementation
9. rodfODF generation library for Ruby