Accessibility support provided by the package

Which system administration activities the package may perform

How the package is related to the field of biology

The culture for which the package provides special support

How the package is related to the field of software development

Which branch of knowledge is the package related to

Kind of games provided by the package

How the package is related to hardware enablement

What language the software is implemented in

What kind of user interface the package provides

Codes for representating writing systems

Applications recommended for younger users

The languages or data formats used to make the package

How the package is related to eletronic mail transmission

Role performed concerning computer networks

Applications related to office and business activities

See https://f-droid.org/wiki/page/Antifeatures

Which network protocols the package can understand

Role performed by the package

How the package is related to the field of science

Characterization by scale of coverage

How the package is related to system security

How the package is related to the field of sound and music

Group of special tags

Groups together related packages

Class of system a package provides specific functionality for.

Which interface toolkit the package provides

The general purpose of the software

What kind of tools for the World Wide Web the package provides

What kind of data (or even processes, or people) the package can work with

Which data formats are supported by the package

How the package is related to the X Window System