At Debian's Packages page, one can search amongst the software available on Debian. In the package descriptions, they are categorized by tags, described here. For instance, the package
[xterm] has the following tags:
Tags: Implemented in: C, User Interface: X Window System, Role: Program, Scope: scope::utility, uitoolkit::athena, Purpose: Need an extra tag, X Window System: Application, Terminal Emulator
Is there a way to search or browser for packages according to these tags?