I see there are several tags that are in a plural form but the singular form would also be acceptable and vice-versa, for examples :
- software
- shortcuts
- applications
- settings
- bookmark
There is the same problem for infinitive verbs and the name derivates from this verb :
- printing
- networking
- charging
- mapping
- sharing
As a guideline for the creation of new tags (and why not also edit the current ones) :
Do tags have to be in a plural or singular form ?
and
[tagging]
?software
as an example here? "softwares" would be wrong and "a-piece-of-software" would be silly; "software" is fine.