| File Type 1 |
Mac OS X Application (Most common) |
| File Format |
File |
| Common? |
No |
| File Description |
Application program (or executable file) that runs under Mac OS X; runs when double-clicked; similar to a .EXE file in Windows.
Because APP files are Mac OS packages, you can right-click (or control-click) an application and select "Show Package Contents" to view the files contained in the package; these include Resources used by the application, property list (.PLIST) files, frameworks, plugins, icons, and other files.
In Windows and Linux systems, it may be possible to view the contents of a Mac OS X application as if it were a folder; a decompression program like WinRAR may also be able to extract files from a Mac OS X application on other operating systems.
NOTE: Files within an application package should not be edited or moved, since changes may prevent the program from running correctly. |
| Program(s) that open app files |
Mac: Runs itself |
| File Type 2 |
FoxPro Generated Application |
| File Format |
File |
| Common? |
No |
| File Description |
Application used by FoxPro to automate procedures (i.e. creating new label sizes, transforming data values, analyzing code, etc); may be included with FoxPro or custom built by the user from a project (.PJX) file using the BUILD APP command |
| Program(s) that open app files |
Windows: Microsoft Visual FoxPro |
| File Type 3 |
Symbian OS Application |
| File Format |
File |
| Common? |
No |
| File Description |
Software program written for the Symbian OS, an operating system for mobile phones and smartphones; includes phones from Nokia, Sony Ericsson, Samsung, and FOMA |
| Program(s) that open app files |
Mac / Windows: Runs on supported cell phones |
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