What is .ADF file extension?
Database file created by ACT!, a customer relationship management (CRM) application; contains customer contact data such as names, email addresses, business information, and the relationship history; used for customer relations information in a structured format.
ADF files are saved with an .ALF lookup file, which contains metadata required to navigate, backup, and restore the ACT! database. ADF files may also be archived within ACT! database backups, which use the .BAK extension.
NOTE: ADF files use Microsoft SQL Server formatting and are similar to .MDF files.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.