Pit-scheduler is a jQuery plugin that lets you manage tasks through a complete interface. It's compatible with Bootstrap and available under the MIT license (free to use).
date-fns has 140+ functions for all occasions.
Schedule Template is a simple template that lets you display events on a timeline, as well as organize them in groups (week days, conference rooms etc…)
jQuery UI Month Picker plugin is designed to allow user input for only a month and year when only that input is required.
Month Picker has lots of options for date validation, setting the start year, using an icon button, input masking, internationalization, localization and more.
Clockface is a clock-like timepicker for Bootstrap. It can be used as Input, Component and Inline style.
A tutorial about creating Pie Timer with CSS, jQuery using linear-gradient.
A tutorial about jQuery UI datepicker implementation styled as a Google Material Designed widget.
timeago.js is a tiny library used to format date with `*** time ago`. eg: '3 hours ago' with localization. No dependencies, support of automatically updating fuzzy timestamps.
tinyDatePicker is a small date/time picker and calendar rendering module that provides a lot of hooks for developers to write calendars, agendas, booking systems, plugins, etc.
It has a lot of options and callbacks that make rendering of complex data easy.
timedropper is a jQuery timepicker plugin. Manage time input fields in a standard form. Focus on the input to open an small interactive timepicker.
Monthly.js is a jQuery based responsive calendar plugin.