Link field for Craft 3

Field type that parses twig when an element is saved.

Adding support of repeater field to Orchid (https://github.com/orchidsoftware/platform)

Address fieldtype for the Craft CMS

Linkit Plugin for Craft 4

A slick color picker fieldtype plugin for the Craft CMS control panel

Django field for python-dateutil relativedelta

Add the awesome in-browser code editor CodeMirror as a field type.

Filter / search a <select> using the popular Select2 fieldtype for Craft CMS

A fieldtype that allows you to select a template from the site templates folder.

Fieldtype and Inputfield for ProcessWire CMS

Supercharged text field validation for Craft CMS

Field type for CraftCMS that allows the user to select a single category from a drop-down.

ExpressionEngine Fieldtype: Shows a dropdown menu with categories and stores the category ID

Fieldtype/Inputfield module for ProcessWire allowing easy generation of thumbnails of the PDF files

An ExpressionEngine 2.x fieldtype which can be used to save category IDs to a custom channel entries field or sync with native categories for a better categories interface.

ProcessWire Fieldtype for entering 4 part phone numbers: country/area code/number/extension as integers

Work with hexadecimal, store in binary, using half of the data size.

Huebee Fieldtype plugin for Craft CMS (v2)

Color me impressed, mate!