| zp | Zepto Source Code |
| zpd | ABC Zeroadic Predicate Data |
| zpk | Zend Studio Application Package |
| zpl | Zimpl Program Data |
| zpt | Zope Page Template |
| zrf | Zillions Rules |
| zrp | RapidPLUS Application Package |
| zrx | ZOC REXX Script |
| zs | ZenScript File |
| zsc | zMUD Script |
| zsf | Zend Server Exported Events |
| zsh | Z-Shell Script |
| zsm | ZSM Assembler Source Code |
| zsrc | Zero Compiler Source Code |
| ztk | Zope Toolkit Data |
| zts | ZTerm Script |
| zu | Zimbu Source Code |
| zul | ZK User Interface Layout |
| zup | Microsoft Dynamics NAV Development Environment Setup Parameters |
| zw | Zooper Widget Template |
| _bsln140 | Blend for Visual Studio Data |
| _sln100 | Visual Studio Data |
| _sln110 | Visual Studio Data |
| _sln120 | Visual Studio Data |
| _sln130 | Visual Studio Data |
| _sln140 | Visual Studio Data |
| _sln150 | Visual Studio Data |
| ~cp | Borland C++ Builder Source Backup |
| ~de | Borland C++ Builder Project Backup |
| ~df | Delphi Form Backup |
