The PAD filename extension is used by the ACT! customer relationship management (or CRM for short) software.
The PAD file contains a link to the ACT files which are saved as .ADF or .ALF filetypes.
.pad File Extension
Developer:
The Sage Group
什么是 pad 档案以及打开它的方法 - ACT! Database Pointer File
开发商:
The Sage Group