There are 9 other file types using
the 1 file extension!
.1 - Unix unformatted manual page
.1 - Inno Setup binary data
.1 - Mozilla Firefox cookie, image, popup permissions
.1 - GNU Screen log
.1 - Stuffit archive file
.1 - Super Nintendo split ROM image
.1 - The File Splitter split file
.1 - AIM AOL Instant Messenger file
.1 - Google Android cache
1 file extension - Pro/ENGINEER backup file
What is 1 file? How to open 1 files?
File type specification:
File extension 1 is also associated with the Pro/ENGINEER (Creo Elements/Pro) 3D CAD/CAM/CAE modeling software.
A .1 file contains backup of Pro/ENGINEER data used as a prevent against computer crash.
The default software associated to open 1 file:
Pro/Engineer (Creo Elements/Pro) 
(obsolete software)
Company or developer:
Parametric Technology Corporation
Pro/Engineer is integrated 3D CAD/CAM/CAE solution used to mechanical engineering, design and manufacturing. First version was released in 1997. Pro/Engineer runs on Microsoft Windows and Unix. In 2010 Pro/Engineer was renamed on Creo Elements/Pro.
List of software applications associated to the .1 file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open 1 file, edit 1 file, convert 1 file, view 1 file, play 1 file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting 1 files.
Software which is able to fix, repair or recover 1 file - Pro/ENGINEER backup file
Programs supporting the exension 1 on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Pro/Engineer (Creo Elements/Pro) for recover 1 file action.
Microsoft Windows:
Pro/Engineer (Creo Elements/Pro) (obsolete/discontinued)
