| File | Product | Purpose |
| defproj.opt | Delphi 1 only | Default project options for the IDE |
| delphi.dmt | Delphi 1 only | The file used to store menu templates |
| delphi.dsk | Delphi 1 only | The default project desktop file |
| delphi.hdx | Delphi 1 and 2 only | The MultiHelp index file |
| defproj.dof | Delphi 2 and later | Default project options for the IDE |
| delphi32.dmt | Delphi 2 and later | The file used to store menu templates |
| delphi32.dsk | Delphi 2 and later | The default project desktop file |
| delphi32.dci | Delphi 3 and later | The text file used to store Code Templates |
| defproj.cfg | Delphi 4 and later | Default project options for the command-line compiler |
| oh.exe | Delphi/C++Builder 4 and later | The OpenHelp executable |
| oh.ini | Delphi/C++Builder 4 and later | The OpenHelp settings file |
| bcb.dmt | C++Builder 1 and later | The file used to store menu templates |
| bcb.dsk | C++Builder 1 and later | The default project desktop file |
| default.bpr | C++Builder 1 and later | Default project file |
| ilink32.dll | C++Builder 1 and later | Incremental linker |
| openhelp.exe | C++Builder 3 only | The OpenHelp executable |
| openhelp.ini | C++Builder 3 only | The OpenHelp settings file |
| bcb.dci | C++Builder 3 and later | The text file used to store Code Templates |
| bcb.bcf | C++Builder 5 and later | Editor formatting configuration file |
| convrtrs.txt | C++Builder 5 and later | XML converter configuration |
| default.bmk | C++Builder 5 and later | Default application makefile |
| deflib.bmk | C++Builder 5 and later | Default library makefile |
| ibm-1252.cnv | C++Builder 5 and later | XML converter |
| defproj.conf | Kylix 1 and later | Default project options for the command-line compiler |
| defproj.kof | Kylix 1 and later | Default project options for the IDE |
| delphi.dct | Kylix 1 and later | The Component Templates file |
| delphi.desk | Kylix 1 and later | The default project desktop file |
| delphi60dci | Kylix 1 and later | The text file used to store Code Templates |
| delphi60dmt | Kylix 1 and later | The file used to store menu templates |
| delphi60dro | Kylix 1 and later | The Object Repository settings |
| *.dst | Delphi/C++Builder 5 and later, Kylix 1 and later | Global desktop files |
