The following tables display file extensions associated with developer files, with extensions for the most commonly encountered file formats listed first:
| File Extension |
File Description |
| .c |
C/C++ Source Code File |
| .cgi |
Common Gateway Interface Script |
| .cpp |
C++ Source Code File |
| .java |
Java Source Code File |
| .pl |
Perl Script |
| File Extension |
File Description |
| .$01 |
DOS Pipe File |
| .a |
Static Library |
| .asm |
Assembly Language Source Code |
| .bas |
BASIC Source Code File |
| .bcp |
Borland C++ Makefile |
| .cbl |
COBOL Program |
| .cc |
C++ Source Code File |
| .class |
Java Class File |
| .cob |
COBOL Source Code File |
| .cod |
Compiled Source Code |
| .config |
Configuration File |
| .cp |
Captivate Source File |
| .dsk |
Borland Project Desktop File |
| .dsp |
Developer Studio Project |
| .dsw |
Visual C++ Workspace |
| .dtd |
Document Type Definition |
| .dylib |
Dynamic Library |
| .ent |
External Entity |
| .f |
Fortran Source Code |
| .f90 |
Fortran 90 Source File |
| .fic |
WINDEV Hyper File Database |
| .for |
Fortran 77 Source File |
| .fpp |
Fortran Source Code |
| .global |
Global Makefile |
| .h |
C++ or Java Header File |
| .hh |
C++ Header File |
| .hhh |
Power C Precompiled Header |
| .inc |
Include File |
| .iss |
InstallShield Silent Response |
| .j |
Java Source Code |
| .jav |
Java Source Code |
| .jpd |
Java Process Definition |
| .jpr |
JBuilder Project |
| .jpx |
JBuilder Project |
| .kb |
C++ Keyboard Script |
| .lbi |
Dreamweaver Library Item |
| .lis |
VAX Program Listing |
| .lsp |
Lisp Program Source Code |
| .lua |
Lua Source File |
| .m4 |
Macro Processor Library |
| .mak |
Makefile |
| .md |
Machine Description |
| .nib |
Interface Resources |
| .o |
Compiled Object File |
| .ocx |
ActiveX Control |
| .olb |
OLE Object Library |
| .p |
Pascal Source Code |
| .pas |
Pascal Source File |
| .pbproj |
Project Builder Project |
| .py |
Python Script |
| .qx |
Quexal Source Code |
| .rb |
REALbasic Project |
| .rb |
Ruby Source Code |
| .rc |
Resource Script |
| .rsrc |
Macintosh Resource File |
| .ru |
JavaSoft JRE 1.3 Library |
| .rul |
InstallShield Rules |
| .so |
Shared Library |
| .spt |
ESPL Programming File |
| .src |
Source Code |
| .vac |
Oc2.316s Cakit File |
| .var |
Variable Data |
| .vbp |
Visual Basic Project |
| .vbx |
Visual Basic Custom Control |
| .vc4 |
Visual C++ 4 File |
| .vcx |
Visual Fox Pro Class Library |
| .x |
Lex Source Code File |
| .xcode |
Xcode Project |
| .xcodeproj |
Xcode Project |
| .xsd |
XML Schema Definition |
| .yab |
Yabasic Source Code |
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