a) portable apps

I like SI , but only detect installed software only if exist a entry into the registry.
Almost a half of my software are portable and SI can't check it.:(
So if SI could :

- mantain a "editable" list of paths of the client computer,
- so SI could do a recursive scanning on every patch.
- This scanning search for .EXE and .LNK files and then obtain all the data from the portable apps.

b) list filter :

Under "Program title and version", I would like to see toggle buttons ( or another method ) to filter/sort the list:

- show all sorted alphabetically ( current sort )
- show grouped, all non-updates items on top and all update items on bottom.
- show only updates items.
- show only non-updates items.

Thanks.