An experimental DSL that aims to be very math like

Uma gem incrível para cálculos matemáticos.

BMI calculator

A gem for generating tip values.

Calculato offers a wide range of medical topics calculations.

Calculator basic

This gem is a simple calculator that allows you to calculate basic arithmetic functions

A handful of algorithms for estimating antiderivative values.

例えば、173:08のような表記の時間を計算するライブラリです

Caldecott HTTP/Websocket Tunneling Library

Simple calendar helper

Gem which allows you to select start week day and get dates ranges according to it.

This gems provides some helpers for ActionView to make creating calendar helpers in forms easier.

A cal-like calendar

Gem Wrapper da API de http://www.calendario.com.br

obtains calendar data from an API

Gem that adds date related scopes to ActiveRecord models

A simple gem to work with month dates in correct order and objects attached to them.

Convert excel sheet to object as calendar.

Export calendar data