I am looking for a memo app for a Treo 755p that is running Palm OS 5.4.9.

I would like to have the following features:

1. Enter memo information including a title, and the date should be automatically assigned.
2. Select / Enter / assign any number of tags that the user can assign, which are stored in a list that is easily accessible.
3. A folder structure is desirable but not necessary.
4. A search mechanism to search memos for any logical combination of assigned tags.
5. Possibly a way to save search results as a list.

Is there anything like this available? Maybe there is more of a database-type solution. I have searched but I have found it difficult to find a comprehensive Palm legacy software database on the web.