Fieldtypes that start with the letter P, run on ExpressionEngine 2, are Free and are sorted by Page Views (descending).
OUTDATED. Enhanced replacements for the Checkboxes, Select Dropdown, Multi Select, and Radio Buttons fieldtypes bundled with EE2.
List-making fieldtype with sortable, editable, and deletable rows.
Sliding switch fieldtype with customizable labels and values.
Pointee is an ExpressionEngine 2.0 Fieldtype that lets publishers log the x & y coordinates of a single click on an image.
A simple button that copies the URL title field contents to the Pages URI field. Great for customers who don't understand the Pages URI field.
Pill select fieldtype with customizable option labels and values.
Playa Links is free fieldtype meant to accompany Pixel & Tonic's Playa fieldtype.