| Extension | Information |
| Z | UNIX Compressed Archive File |
| Z# | Frotz Z-Code Game |
| Z0 | ZoneAlarm Mailsafe Renamed .JS File (Zone Labs) |
| Z01 | WinZip Split Compressed Archive (WinZip Computing, Inc.) |
| Z01 | Back4Win Backup Archive (Alistair George Manufacturing) |
| Z02 | WinZip Split Compressed Archive (WinZip Computing, Inc.) |
| Z02 | Back4Win Backup Archive (Alistair George Manufacturing) |
| Z03 | WinZip Split Compressed Archive (WinZip Computing, Inc.) |
| Z03 | Back4Win Backup Archive (Alistair George Manufacturing) |
| Z04 | WinZip Split Compressed Archive (WinZip Computing, Inc.) |
| Z04 | Back4Win Backup Archive (Alistair George Manufacturing) |
| Z05 | WinZip Split Compressed Archive (WinZip Computing, Inc.) |
| Z05 | Back4Win Backup Archive (Alistair George Manufacturing) |
| Z06 | Back4Win Backup Archive (Alistair George Manufacturing) |
| Z07 | Back4Win Backup Archive (Alistair George Manufacturing) |
| Z08 | Back4Win Backup Archive (Alistair George Manufacturing) |
| Z09 | Back4Win Backup Archive (Alistair George Manufacturing) |
| Z1 | ZoneAlarm Mailsafe Renamed .VB File (Zone Labs) |
| Z2 | ZoneAlarm Mailsafe (Zone Labs) |
| Z3 | Infocom Game Module |
| Z3 | ZoneAlarm Mailsafe (Zone Labs) |
| Z32 | ZAR32 Progress Data Save File (Alexey V. Gubin) |
| Z3D | Zmodeler 3D Model File |
| Z4 | ZoneAlarm Mailsafe (Zone Labs) |
| Z5 | Infocom Z-Machine Z-Code V5 Adventure |
| Z5 | Inform Game File |
| Z5 | ZoneAlarm Mailsafe (Zone Labs) |
| Z6 | Inform Game File |
| Z6 | ZoneAlarm Mailsafe (Zone Labs) |
| Z64 | Nintendo 64 Emulator |
| Z7 | ZoneAlarm Mailsafe (Zone Labs) |
| Z8 | Inform Game File |
| Z8 | Infocom Z-Machine Z-Code V8 Adventure |
| Z8 | ZoneAlarm Mailsafe (Zone Labs) |
| Z80 | Z80 Game Snapshot |
| Z80 | ZX Spectrum-Emulator |
| Z9 | ZoneAlarm Mailsafe (Zone Labs) |
| ZA | Line of Sight: Vietnam |
| ZAA | (Ending in A, B, C,...) Output of the UNIX SPLIT Utility |
| ZABW | AbiWord Compressed Document (The AbiSource Community) |
| ZAD | ZFax Digitized Voice File |
| ZAP | FileWrangler Compressed File |
| ZAP | Windows Software Installation Settings (Microsoft) |
| ZAP | Rebel Software Installation Manager (Rebel Software) |
| ZAP | Zone Alarm Data (Zone Labs, Inc.) |
| ZAR | PlayStation2 Audio File (Sony Corporation of America) |
| ZARGO | Poseidon for UML CE/SE Diagram (Gentleware AG) |
| ZAX | Z-Axis 3-D Office Design Software |
| ZBA | Compressed File Run Through UNIX COMPRESS and BTOA Utilities |
| ZBD | ZoomBrowser Database File (Canon) |
| ZBD | MechWarrior 3 Snow Fields File |
| ZBD | Zebedee Encrypted File |
| ZBF | Z-Buffer Radiance File |
| ZBR | Zoner ZBR Preview |
| ZBX | Disk Volume Identification |
| ZC | Zipkey Configuration File |
| ZCC | ECLIPSE Server Configuration Information (Zephyr) |
| ZCFG | Zoom Search Engine Configuration File (Wrensoft) |
| ZCH | ZIG File |
| ZCN | OmniPage (ScanSoft, Inc.) |
| ZCP | Zortech 21 Sample Work file |
| ZCV | Zortech 3 Readme File |
| ZD2 | Zillions of Games Zillions Locked Rules File (Zillions Development Corporation) |
| ZDB | EPSQ Security Officer Submission |
| ZDB | Quicken On-line File (Intuit) |
| ZDB | Wonder Word Data File |
| ZDB | Report~Assist Database (SimpleLogic Software) |
| ZDB | DesignPro Label Design (Avery) |
| ZDF | Zoids Commando Data File (D9 Software) |
| ZDF | Z-Firm Document Folder |
| ZDG | ZView Compressed Document |
| ZDL | DesignPro Label Design (Avery) |
| ZDP | ZDNet Password Pro 32 |
| ZDP | DesignPro Label Design (Avery) |
| ZDS | DVDSubber DVD Subtitles and Scripts |
| ZDX | Avery Design Clipart Index (Avery Dennison Corporation) |
| ZEI | ANNO 1602 Game |
| ZEI | Logocad Triga File |
| ZEISS | Zeiss CSLM Bitmap Image |
| ZEL | Zel MIDI Source File (Zel Software) |
| ZER | Zerberus File |
| ZEXP | Zope Binary Export File (Zope Corporation) |
| ZFC | Back4Win Backup Archive (Alistair George Manufacturing) |
| ZFD | ABC Programming Language Zeroadic Function |
| ZFS | C++ Assembly Source |
| ZFS | Interstate '76 Archive |
| ZFS | Interstate '82 Archive |
| ZFS | Z-Firm File Stub |
| ZFSENDTOTARGET | Compressed Folder SendTo Target File (Microsoft) |
| ZFX | ZFX - CC3 File Packer Tool |
| ZFX | ZipForm Data File (RE FormsNet) |
| ZGI | Zoomerang Web Survey Page (MarketTools, Inc.) |
| ZGM | ZenoGraphics File |
| ZGT | Copilot |
| ZGT | Zagit Oren Scientific Wordprocessor File |
| ZGV | ECLIPSE Server Global Variable File (Zephyr) |
| ZH | Communicator Java Classes File (Netscape) |
| ZHP | SwiftView ICS Command File (SwiftView, Inc.) |
| ZHS | ECLIPSE Server Hotspot File (Zephyr) |
| ZH_TW | Communicator Java Classes File (Netscape) |
| ZID | Z-Firm ID |
| ZIG | ZIG Game File |
| ZIM | PagePath Technologies Compressed Mac File |
| ZIN | Z-axis: The Next Generation |
| ZINC | Zinc Interface Library Icon File |
| ZIP | Compressed Archive File |
| ZIP | Back4Win Backup Archive (Alistair George Manufacturing) |
| ZIP2 | StuffIt Deluxe 8.5 Archive (Aladdin Systems, Inc.) |
| ZIPENX | egis Encrypted ZIP File (HiTRUST Inc.) |
| ZIPX | StuffIt Deluxe 8.5 Archive (Aladdin Systems, Inc.) |
| ZIX | Quicken On-line File (Intuit) |
| ZKA | Quicken6 File |
| ZL | Easy CD Creator Drag to Disk File (Sonic Solutions) |
| ZL0 | ZoneAlarm Mailsafe Renamed .ADE File (Zone Labs) |
| ZL1 | ZoneAlarm Mailsafe Renamed .ADP File (Zone Labs) |
| ZL2 | ZoneAlarm Mailsafe Renamed .BAS File (Zone Labs) |
| ZL3 | ZoneAlarm Mailsafe Renamed .BAT File (Zone Labs) |
| ZL4 | ZoneAlarm Mailsafe Renamed .CHM File (Zone Labs) |
| ZL5 | ZoneAlarm Mailsafe Renamed .CMD File (Zone Labs) |
| ZL6 | ZoneAlarm Mailsafe Renamed .COM File (Zone Labs) |
| ZL7 | ZoneAlarm Mailsafe Renamed .CPL File (Zone Labs) |
| ZL8 | ZoneAlarm Mailsafe Renamed .CRT File (Zone Labs) |
| ZL9 | ZoneAlarm Mailsafe Renamed .EXE File (Zone Labs) |
| ZLA | ZoneAlarm Mailsafe Renamed .HLP File (Zone Labs) |
| ZLB | ZoneAlarm Mailsafe Renamed .HTA File (Zone Labs) |
| ZLC | ZoneAlarm Mailsafe Renamed .INF File (Zone Labs) |
| ZLD | ZoneAlarm Mailsafe Renamed .INS File (Zone Labs) |
| ZLE | ZoneAlarm Mailsafe Renamed .ISP File (Zone Labs) |
| ZLF | ZoneAlarm Mailsafe Renamed .JSE File (Zone Labs) |
| ZLG | ZoneAlarm Mailsafe Renamed .LNK File (Zone Labs) |
| ZLG | e-Surveiller Log Archive (e-Surveiller Team) |
| ZLH | ZoneAlarm Mailsafe Renamed .MDB File (Zone Labs) |
| ZLI | ZoneAlarm Mailsafe Renamed .MDE File (Zone Labs) |
| ZLJ | ZoneAlarm Mailsafe Renamed .MSC File (Zone Labs) |
| ZLK | ZoneAlarm Mailsafe Renamed .MSI File (Zone Labs) |
| ZLL | ZoneAlarm Mailsafe Renamed .MSP File (Zone Labs) |
| ZLM | ZoneAlarm Mailsafe Renamed .MST File (Zone Labs) |
| ZLN | ZoneAlarm Mailsafe Renamed .PCD File (Zone Labs) |
| ZLO | ZoneAlarm Mailsafe Renamed .PIF File (Zone Labs) |
| ZLP | ZoneAlarm Mailsafe Renamed .REG File (Zone Labs) |
| ZLQ | ZoneAlarm Mailsafe Renamed .SCR File (Zone Labs) |
| ZLR | ZoneAlarm Mailsafe Renamed .SCT File (Zone Labs) |
| ZLS | ZoneAlarm Mailsafe Renamed .SHS File (Zone Labs) |
| ZLT | ZoneAlarm Mailsafe Renamed .URL File (Zone Labs) |
| ZLU | ZoneAlarm Mailsafe Renamed .VBE File (Zone Labs) |
| ZLV | ZoneAlarm Mailsafe Renamed .VBS File (Zone Labs) |
| ZLW | ZoneAlarm Mailsafe Renamed .WSC File (Zone Labs) |
| ZLX | Atlantis Ocean Mind Word Processing |
| ZLX | ZoneAlarm Mailsafe Renamed .WSF File (Zone Labs) |
| ZLY | ZoneAlarm Mailsafe Renamed .WSH File (Zone Labs) |
| ZLZ | ZoneAlarm Mailsafe Renamed .ASX File (Zone Labs) |
| ZM0 | ZoneAlarm Mailsafe Renamed .DBX File (Zone Labs) |
| ZM1 | ZSNES Movie #1 (ZSNES Team) |
| ZM1 | ZoneAlarm Mailsafe Renamed .MDA File (Zone Labs) |
| ZM2 | ZSNES Movie #2 (ZSNES Team) |
| ZM2 | ZoneAlarm Mailsafe Renamed .MDZ File (Zone Labs) |
| ZM3 | ZSNES Movie #3 (ZSNES Team) |
| ZM3 | ZoneAlarm Mailsafe Renamed .NCH File (Zone Labs) |
| ZM4 | ZSNES Movie #4 (ZSNES Team) |
| ZM4 | ZoneAlarm Mailsafe Renamed .PRF File (Zone Labs) |
| ZM5 | ZSNES Movie #5 (ZSNES Team) |
| ZM5 | ZoneAlarm Mailsafe Renamed .SCF File (Zone Labs) |
| ZM6 | ZSNES Movie #6 (ZSNES Team) |
| ZM6 | ZoneAlarm Mailsafe Ranamed .SHB File (Zone Labs) |
| ZM7 | ZSNES Movie #7 (ZSNES Team) |
| ZM7 | ZoneAlarm Mailsafe Renamed .WMS File (Zone Labs) |
| ZM8 | ZSNES Movie #8 (ZSNES Team) |
| ZM8 | ZoneAlarm Mailsafe Renamed .MHT File (Zone Labs) |
| ZM9 | ZSNES Movie #9 (ZSNES Team) |
| ZM9 | ZoneAlarm Mailsafe Renamed .ZIP File (Zone Labs) |
| ZMA | ZoneAlarm Mailsafe (Zone Labs) |
| ZMB | ZoneAlarm Mailsafe (Zone Labs) |
| ZMC | ZoneAlarm Mailsafe (Zone Labs) |
| ZMD | ZoneAlarm Mailsafe (Zone Labs) |
| ZME | ZoneAlarm Mailsafe (Zone Labs) |
| ZMF | Draw Native Drawing File Format (Zoner, Inc.) |
| ZMF | ZoneAlarm Mailsafe (Zone Labs) |
| ZMG | Zenworks ver 3 and Above Imaging Engine (Novell) |
| ZMG | ZoneAlarm Mailsafe (Zone Labs) |
| ZMH | ZoneAlarm Mailsafe (Zone Labs) |
| ZMI | Chrono Chaos Creations milCgi |
| ZMI | ZoneAlarm Mailsafe (Zone Labs) |
| ZMI | ZAP Meta Image (Patrice Terrier) |
| ZMJ | ZoneAlarm Mailsafe (Zone Labs) |
| ZMK | Z-Up Maker Project File |
| ZMK | ZoneAlarm Mailsafe (Zone Labs) |
| ZML | ZoneAlarm Mailsafe (Zone Labs) |
| ZMM | ZoneAlarm Mailsafe (Zone Labs) |
| ZMN | ZoneAlarm Mailsafe (Zone Labs) |
| ZMO | ZoneAlarm Mailsafe (Zone Labs) |
| ZMP | ZoneAlarm Mailsafe (Zone Labs) |
| ZMQ | ZoneAlarm Mailsafe (Zone Labs) |
| ZMR | ZoneAlarm Mailsafe (Zone Labs) |
| ZMS | ECLIPSE Server Macro Script File (Zephyr) |
| ZMS | ZoneAlarm Mailsafe (Zone Labs) |
| ZMT | MOPAC Z-Matrix Molecule File |
| ZMT | ZoneAlarm Mailsafe (Zone Labs) |
| ZMU | ZoneAlarm Mailsafe (Zone Labs) |
| ZMV | ZSNES Movie File (ZSNES Team) |
| ZMV | ZoneAlarm Mailsafe (Zone Labs) |
| ZMW | ZoneAlarm Mailsafe (Zone Labs) |
| ZMX | ZoneAlarm Mailsafe (Zone Labs) |
| ZMY | ZoneAlarm Mailsafe (Zone Labs) |
| ZMZ | ZoneAlarm Mailsafe (Zone Labs) |
| ZN0 | ZoneAlarm Mailsafe (Zone Labs) |
| ZN1 | ZoneAlarm Mailsafe (Zone Labs) |
| ZN2 | ZoneAlarm Mailsafe (Zone Labs) |
| ZN3 | ZoneAlarm Mailsafe (Zone Labs) |
| ZN4 | ZoneAlarm Mailsafe (Zone Labs) |
| ZN5 | ZoneAlarm Mailsafe (Zone Labs) |
| ZN6 | ZoneAlarm Mailsafe (Zone Labs) |
| ZN7 | ZoneAlarm Mailsafe (Zone Labs) |
| ZN8 | ZoneAlarm Mailsafe (Zone Labs) |
| ZN9 | ZoneAlarm Mailsafe (Zone Labs) |
| ZNA | Zinio Reader File (Zinio Systems) |
| ZNA | ZoneAlarm Mailsafe (Zone Labs) |
| ZNB | ZoneAlarm Mailsafe (Zone Labs) |
| ZNC | ZoneAlarm Mailsafe (Zone Labs) |
| ZND | ZoneAlarm Mailsafe (Zone Labs) |
| ZNE | ZoneAlarm Mailsafe (Zone Labs) |
| ZNF | ZoneAlarm Mailsafe (Zone Labs) |
| ZNG | ZoneAlarm Mailsafe (Zone Labs) |
| ZNH | ZoneAlarm Mailsafe (Zone Labs) |
| ZNI | ZoneAlarm Mailsafe (Zone Labs) |
| ZNJ | ZoneAlarm Mailsafe (Zone Labs) |
| ZNK | ZoneAlarm Mailsafe (Zone Labs) |
| ZNL | ZoneAlarm Mailsafe (Zone Labs) |
| ZNM | ZoneAlarm Mailsafe (Zone Labs) |
| ZNN | ZoneAlarm Mailsafe (Zone Labs) |
| ZNO | Zinio Reader Magazine (Zinio Systems) |
| ZNO | ZoneAlarm Mailsafe (Zone Labs) |
| ZNP | ZoneAlarm Mailsafe (Zone Labs) |
| ZNQ | ZoneAlarm Mailsafe (Zone Labs) |
| ZNR | ZoneAlarm Mailsafe (Zone Labs) |
| ZNS | ZoneAlarm Mailsafe (Zone Labs) |
| ZNT | ZoneAlarm Mailsafe (Zone Labs) |
| ZNU | ZoneAlarm Mailsafe (Zone Labs) |
| ZNV | ZoneAlarm Mailsafe (Zone Labs) |
| ZNW | ZoneAlarm Mailsafe (Zone Labs) |
| ZNX | ZoneAlarm Mailsafe (Zone Labs) |
| ZNY | ZoneAlarm Mailsafe (Zone Labs) |
| ZNZ | ZoneAlarm Mailsafe (Zone Labs) |
| ZO0 | ZoneAlarm Mailsafe (Zone Labs) |
| ZO1 | ZoneAlarm Mailsafe (Zone Labs) |
| ZO2 | ZoneAlarm Mailsafe (Zone Labs) |
| ZO3 | ZoneAlarm Mailsafe (Zone Labs) |
| ZO4 | ZoneAlarm Mailsafe (Zone Labs) |
| ZO5 | ZoneAlarm Mailsafe (Zone Labs) |
| ZO6 | ZoneAlarm Mailsafe (Zone Labs) |
| ZO7 | ZoneAlarm Mailsafe (Zone Labs) |
| ZO8 | ZoneAlarm Mailsafe (Zone Labs) |
| ZO9 | ZoneAlarm Mailsafe (Zone Labs) |
| ZOA | ZoneAlarm Mailsafe (Zone Labs) |
| ZOB | ZoneAlarm Mailsafe (Zone Labs) |
| ZOC | ZoneAlarm Mailsafe (Zone Labs) |
| ZOD | ZoneAlarm Mailsafe (Zone Labs) |
| ZOE | ZoneAlarm Mailsafe (Zone Labs) |
| ZOF | ZoneAlarm Mailsafe (Zone Labs) |
| ZOG | ZoneAlarm Mailsafe (Zone Labs) |
| ZOH | ZoneAlarm Mailsafe (Zone Labs) |
| ZOI | eZediaMX and eZedia Player Unlocked Presentation Document |
| ZOI | ZoneAlarm Mailsafe (Zone Labs) |
| ZOJ | ZoneAlarm Mailsafe (Zone Labs) |
| ZOK | ZoneAlarm Mailsafe (Zone Labs) |
| ZOL | ZoneAlarm Mailsafe (Zone Labs) |
| ZOM | Amiga Compressed Archive (Amiga) |
| ZOM | ZoneAlarm Mailsafe (Zone Labs) |
| ZON | Grand Theft Auto III Zone File (Take-Two Interactive Software, Inc.) |
| ZON | OmniPage Zone Template (ScanSoft, Inc.) |
| ZON | ZoneAlarm Mailsafe (Zone Labs) |
| ZOO | ZOO Compressed Archive File |
| ZOO | Zoo Tycoon Game File (Microsoft) |
| ZOOK | BAMZOOKi Exported Zook (British Broadcasting Corporation - CBBC) |
| ZOP | ZoneAlarm Mailsafe (Zone Labs) |
| ZOQ | ZoneAlarm Mailsafe (Zone Labs) |
| ZOR | ZoneAlarm Mailsafe (Zone Labs) |
| ZOS | ZoneAlarm Mailsafe (Zone Labs) |
| ZOT | ZoneAlarm Mailsafe (Zone Labs) |
| ZOT | Zoot Database File (Zoot Software) |
| ZOU | ZoneAlarm Mailsafe (Zone Labs) |
| ZOV | ZoneAlarm Mailsafe (Zone Labs) |
| ZOW | ZoneAlarm Mailsafe (Zone Labs) |
| ZOX | ZoneAlarm Mailsafe (Zone Labs) |
| ZOY | ZoneAlarm Mailsafe (Zone Labs) |
| ZOZ | ZoneAlarm Mailsafe (Zone Labs) |
| ZP0 | ZoneAlarm Mailsafe (Zone Labs) |
| ZP1 | ZoneAlarm Mailsafe (Zone Labs) |
| ZP1 | ACOS PLUS.1 Project Management Data and Workaround (Package) (ACOS PM GmbH) |
| ZP2 | ZoneAlarm Mailsafe (Zone Labs) |
| ZP3 | ZoneAlarm Mailsafe (Zone Labs) |
| ZP4 | ZoneAlarm Mailsafe (Zone Labs) |
| ZP5 | ZoneAlarm Mailsafe (Zone Labs) |
| ZP6 | ZoneAlarm Mailsafe (Zone Labs) |
| ZP7 | ZoneAlarm Mailsafe (Zone Labs) |
| ZP8 | ZoneAlarm Mailsafe (Zone Labs) |
| ZP9 | ZoneAlarm Mailsafe (Zone Labs) |
| ZPA | ZoneAlarm Mailsafe (Zone Labs) |
| ZPB | ZoneAlarm Mailsafe (Zone Labs) |
| ZPC | ZoneAlarm Mailsafe (Zone Labs) |
| ZPD | ABC Programming Language Zeroadic Function |
| ZPD | ZoneAlarm Mailsafe (Zone Labs) |
| ZPE | ZoneAlarm Mailsafe (Zone Labs) |
| ZPF | ZoneAlarm Mailsafe (Zone Labs) |
| ZPG | ZoneAlarm Mailsafe (Zone Labs) |
| ZPH | ZoneAlarm Mailsafe (Zone Labs) |
| ZPI | ZoneAlarm Mailsafe (Zone Labs) |
| ZPJ | ECLIPSE Server Project File (Zephyr) |
| ZPJ | ZoneAlarm Mailsafe (Zone Labs) |
| ZPK | Z-Firm Package |
| ZPK | ZoneAlarm Mailsafe (Zone Labs) |
| ZPL | ZIG File |
| ZPL | ZoneAlarm Mailsafe (Zone Labs) |
| ZPM | Zortech 3 Source Clib File |
| ZPM | ZoneAlarm Mailsafe (Zone Labs) |
| ZPN | ZoneAlarm Mailsafe (Zone Labs) |
| ZPO | ZoneAlarm Mailsafe (Zone Labs) |
| ZPP | ZoneAlarm Mailsafe (Zone Labs) |
| ZPQ | ZoneAlarm Mailsafe (Zone Labs) |
| ZPR | ZoneAlarm Mailsafe (Zone Labs) |
| ZPS | ZoneAlarm Mailsafe (Zone Labs) |
| ZPT | ZoneAlarm Mailsafe (Zone Labs) |
| ZPT | Zope Page Template (Zope Corporation) |
| ZPU | ZoneAlarm Mailsafe (Zone Labs) |
| ZPV | ZoneAlarm Mailsafe (Zone Labs) |
| ZPW | ZippedWeb Archive (Martin Sloup) |
| ZPW | ZoneAlarm Mailsafe (Zone Labs) |
| ZPX | ZoneAlarm Mailsafe (Zone Labs) |
| ZPY | ZoneAlarm Mailsafe (Zone Labs) |
| ZPZ | ZoneAlarm Mailsafe (Zone Labs) |
| ZQ0 | ZoneAlarm Mailsafe (Zone Labs) |
| ZQ1 | ZoneAlarm Mailsafe (Zone Labs) |
| ZQ2 | ZoneAlarm Mailsafe (Zone Labs) |
| ZQ3 | ZoneAlarm Mailsafe (Zone Labs) |
| ZQ4 | ZoneAlarm Mailsafe (Zone Labs) |
| ZQ5 | ZoneAlarm Mailsafe (Zone Labs) |
| ZQ6 | ZoneAlarm Mailsafe (Zone Labs) |
| ZQ7 | ZoneAlarm Mailsafe (Zone Labs) |
| ZQ8 | ZoneAlarm Mailsafe (Zone Labs) |
| ZQ9 | ZoneAlarm Mailsafe (Zone Labs) |
| ZQA | ZoneAlarm Mailsafe (Zone Labs) |
| ZQB | ZoneAlarm Mailsafe (Zone Labs) |
| ZQC | ZoneAlarm Mailsafe (Zone Labs) |
| ZQD | ZoneAlarm Mailsafe (Zone Labs) |
| ZQE | ZoneAlarm Mailsafe (Zone Labs) |
| ZQF | ZoneAlarm Mailsafe (Zone Labs) |
| ZQG | ZoneAlarm Mailsafe (Zone Labs) |
| ZQH | ZoneAlarm Mailsafe (Zone Labs) |
| ZQI | ZoneAlarm Mailsafe (Zone Labs) |
| ZQJ | ZoneAlarm Mailsafe (Zone Labs) |
| ZQK | ZoneAlarm Mailsafe (Zone Labs) |
| ZQL | ZoneAlarm Mailsafe (Zone Labs) |
| ZQM | ZoneAlarm Mailsafe (Zone Labs) |
| ZQN | ZoneAlarm Mailsafe (Zone Labs) |
| ZQO | ZoneAlarm Mailsafe (Zone Labs) |
| ZQP | ZoneAlarm Mailsafe (Zone Labs) |
| ZQQ | ZoneAlarm Mailsafe (Zone Labs) |
| ZQR | ZoneAlarm Mailsafe (Zone Labs) |
| ZQS | ZoneAlarm Mailsafe (Zone Labs) |
| ZQT | ZoneAlarm Mailsafe (Zone Labs) |
| ZQU | ZoneAlarm Mailsafe (Zone Labs) |
| ZQV | ZoneAlarm Mailsafe (Zone Labs) |
| ZQW | ZoneAlarm Mailsafe (Zone Labs) |
| ZQX | ZoneAlarm Mailsafe (Zone Labs) |
| ZQY | ZoneAlarm Mailsafe (Zone Labs) |
| ZQZ | ZoneAlarm Mailsafe (Zone Labs) |
| ZR0 | ZoneAlarm Mailsafe (Zone Labs) |
| ZR1 | ZoneAlarm Mailsafe (Zone Labs) |
| ZR2 | ZoneAlarm Mailsafe (Zone Labs) |
| ZR3 | ZoneAlarm Mailsafe (Zone Labs) |
| ZR4 | ZoneAlarm Mailsafe (Zone Labs) |
| ZRF | Zillions of Games Zillions Rules File (Zillions Development Corporation) |
| ZRN | ACOS PLUS.1 Project File (ACOS PM GmbH) |
| ZRP | Rapid Simulation Package |
| ZRS | Hearts Game File (Microsoft) |
| ZS | ECLIPSE Server Script File (Zephyr) |
| ZS1 | ZSNES Slot 1 Save State (ZSNES Team) |
| ZS2 | ZSNES Slot 2 Save State (ZSNES Team) |
| ZS3 | ZSNES Slot 3 Save State (ZSNES Team) |
| ZS4 | ZSNES Slot 4 Save State (ZSNES Team) |
| ZS5 | ZSNES Slot 5 Save State (ZSNES Team) |
| ZS6 | ZSNES Slot 6 Save State (ZSNES Team) |
| ZS7 | ZSNES Slot 7 Save State (ZSNES Team) |
| ZS8 | ZSNES Slot 8 Save State (ZSNES Team) |
| ZS9 | ZSNES Slot 9 Save State (ZSNES Team) |
| ZSCMP | zsCompare Session File (Zizasoft, LLC) |
| ZSG | Zipped Sega Genesis File |
| ZSH | Unix zsh Shell Script |
| ZSK | Embroidery Machine Stitch File |
| ZSN | ACOS PLUS.1 Project File (ACOS PM GmbH) |
| ZSR | Form*Z Temporary Save File |
| ZST | ZSNES Slot 0 Save State (ZSNES Team) |
| ZTC | Zortech 21 Readme File |
| ZTD | Zoo Tycoon Game Add-in (Microsoft) |
| ZTE | E-Tabs Reader File |
| ZTL | ZBrush ZTool Native File (Pixologic, Inc.) |
| ZTM | ZTreeWin Macro |
| ZTMP | Steam Zipped Half-Life Map/Mod File (Valve Corporation) |
| ZTR | Tracker Skin (SymbianWare OHG) |
| ZTS | Z-Term Script |
| ZTX | Z-axis: The Next Generation |
| ZUML | Poseidon for UML Project File (Gentleware AG) |
| ZUN | Recogsp File |
| ZUP | Business Solutions Navision Configuration File (Microsoft) |
| ZVD | ZyXEL Voice File |
| ZVW | Z-axis: The Next Generation |
| ZW | Chinese Text |
| ZWB | Zortech 21 Readme File |
| ZWL | WinLabel Ver. 3.0 Label (Avery) |
| ZX | KGB Shapshot |
| ZX82 | Speculator 97 Shapshot |
| ZXH | STIClassroomWin Takehome File (Software Technology, Inc.) |
| ZXL | Immersioni Dive Logbook DL7 (Mario Giuseppe Leonardi) |
| ZXN | PhotoEncrypt Encrypted Photo (ZXN Corporation) |
| ZXS | ZX32 Shapshot |
| ZXS | STIClassroom Companion Transfer File (Software Technology, Inc.) |
| ZXU | Immersioni Logbook DL7 (Mario Giuseppe Leonardi) |
| ZYS | Business Integrator Database (Pervasive Software Inc.) |
| ZYX | ZyXEL Voice Format |
| ZZ | ZZip Compressed Archive (Damien Debin) |
| ZZE | ASCII Encoded File Archive |
| ZZL | ZZTAE, KevEdit |
| ZZM | ZZT Music Player, ZZTAE, KevEdit |
| ZZT | ZZT Game Creation System |
| ZZZ | Micro Perfect Products Sleep Mode |