The startlet file extension is related to the Start++ tool for Windows. The startlet file contains script.
STARTLET file extension - Start++ script
What is startlet file? How to open startlet files?
File type specification:
The startlet file extension is associated with the Start++ a tool for Microsoft Windows Vista operating system that enhance Start menu with new functions.
The startlet file stores set of commands for Start++ tool.
This startlet file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.