| Prefix | Organization | Purpose | Web Site | Contact | Registered |
|---|---|---|---|---|---|
| C | Proteus | cSizer | Danail Traichev | 13-Oct-1999 | |
| C4 | C4 Software | Reserved | Charles Hodgkins | 25-Aug-2000 | |
| CA | Carl Caulkett | Reserved; Reserved | Carl Caulkett | 01-Feb-1999 | |
| caa | Appel Consulting | caaCard (and others) | Charles A. Appel | 28-Dec-2099 | |
| caa | TcaaPokerCard, TcaaPokerHand, | charlesappel.home.mindspring.com/ | Charles A. Appel Jr. | 10-Nov-2003 | |
| CAB | Cabarrus Systems, Inc. | Cabarrus Components | www.cabarrussystems.com | Carl J. Mosca | 16-Jun-1999 |
| can | programlama | www.arabulbul.cjb.net | canbasaran | 14-Apr-2000 | |
| CAP | CAP-MPT | www.cap-mpt.com | Steve Garcia | 28-Dec-2099 | |
| CAR | Hayden-R Ltd | Various; Reserved | www.haydenr.com | Colin A Ridgewell | 11-Jul-1998 |
| CAS | CAS Software AG | CASablanca component library | www.cas.de | Christian Abeln | 12-Jul-1999 |
| cass | Cassovia Software Ltd. | Various | cassovia.com | Thomas Smekal | 12-Feb-2003 |
| CAT | Catholic University | Reserved; Reserved | www.ucsm.edu.pe | Jose Hurtado Miranda | 13-Sep-1998 |
| CB | Reserved | www.bigfoot.com/~CarlosBarbosa | Carlos Barbosa | 22-Apr-1999 | |
| CB | CenBells | TCBStringGrid | www.cenbells.de | Ken Bell | 18-Oct-2003 |
| CB4 | Tiriss | CB4 Tables | www.tiriss.com | Tjipke A. van der Plaats | 14-Oct-1999 |
| CBD | Cubud Controls | Cubud control pack | come.to/delphi-doo-doo | Peter Morris | 10-Jul-1999 |
| CBM | Custom Byte Manipulation | Steve Edwards | 11-May-1999 | ||
| CBT | Cigarbox Technologies | Mark Adams | 25-Sep-2000 | ||
| CC | ICM Software | Carcassi; Toolkit - Pen etc. | dspace.dial.pipex.com/town/estate/ns21/icfmdc.htm | 04-May-1998 | |
| CC | Borland | CCXXX | www.borland.com/techvoyage | Charlie Calvert | 12-Jun-1999 |
| CCC | Customizable Components | Reserved | www.cust-comp.com | Mike Kolter | 04-Sep-1999 |
| CCL | Cahill Casterline Limited | Reserved; Reserved | Leroy Casterline | 11-Jul-1998 | |
| CCS | CCS Software | reserved | www.ccs-software.co.za | Christo Smit | 23-Apr-2000 |
| cd | Compudigm International Ltd | various | www.compudigm.com | Andrew Cardno | 25-Oct-1999 |
| CDB | South Pacific Information Services Ltd | CDB Toolkit; Toolkit | www.spis.co.nz | Peter Hyde | 10-May-1998 |
| CDE | CDE software | pending | www.cdesoftware.com | Lance Rasmussen | 14-Mar-2007 |
| CDK | Eagle Software Inc | CDK Component Developer Kit; Component Develop | www.eagle-software.com | mark miller | 27-Apr-1998 |
| CDS | Collins Data Systems | Reserved; Reserved | Michael D. Collins | 01-Feb-1999 | |
| CDW | Reserved | Chris Wallis | 16-Aug-2000 | ||
| Cdz | Cadenza | reserved | www.cadenza.nl | Wim van Hoorn | 25-Feb-2004 |
| Ce | Yurteh | Alex Plas | 24-Feb-2000 | ||
| CER | Cerebro Engenharia | Antonio Carlos B Cunha Leal | 18-May-2000 | ||
| CEX | ToolsFactory | ClassExplorer; Navigation and Browsing add on | www.toolsfactory.com | Markus Spoettl | 12-May-1998 |
| CF | Creative Freedom | Creative Freedom Components | www.air.org | Robert Leland | 18-Aug-1999 |
| cf | Cool Forms Collection | www.gajits.com | Graeme Chandler | 24-Mar-2000 | |
| CFD | CFD | Clipper Functions for Delphi; Clipper Functions | members.aol.com/clipfunc/ | Ken White | 15-May-1998 |
| CG | ChristGuy Productions | christguy.virtualave.net | Clifford | 13-May-2000 | |
| cg | CentralGest | Intraweb componentes | www.cgdevtools.com | Pedro Lopes | 04-Nov-2003 |
| cgd | ClarionGrade Ltd | www.clariongrade.co.uk | Trevor Jones | 02-Mar-2000 | |
| CGI | Vern Six | CGI Made Easy | www.vernsix.com | Vern Six | 18-Oct-1999 |
| CH | Chunhui Tang | CHRotatepicture; Graphics | www.nease.net/~chunhui | Chunhui Tang | 10-May-1998 |
| CH | CH Sistemas | Carlos Hespanhol | 26-Sep-2000 | ||
| Chas | PT. Reftindo Sarana | Chasware Component Library | asnawi.port5.com/ | Choerun Asnawi | 11-Sep-2003 |
| CHC | WarmBoot Informatica | SQLFilter | www.warmboot.com.br | Carlos H. Cantu | 13-Jul-1999 |
| CHECK | dinosGmbH | Delphi Encryption Compendium | www.dinosGmbH.de | Hagen Reddmann | 30-Mar-2001 |
| chkd | Checkdigits.com | Various | www.checkdigits.com | Ian Barker | 11-Sep-2003 |
| CI | www.crazy-idea.de | Andre Bell | 27-May-1999 | ||
| CIB | Reserved | Claus Ibsen | 29-Jul-1999 | ||
| CIM | Dana Corporation - CIM Services | www.dana.com | Benjamin Briggle | 25-May-1999 | |
| CIS | Custom Insurance Solutions | Reserved | www.customins.com | Eric Winch | 24-Apr-1999 |
| CIV | C4 Software | Reserved | Charles Hodgkins | 25-Aug-2000 | |
| CJE | Erdal Consulting | various | Christopher J. Erdal | 22-Apr-2002 | |
| CJG | Reserved | Carlos Guerlloy | 09-Aug-1999 | ||
| CJS | CJS Developpement | Reserved; Reserved | Christophe Spaggiari | 03-Jun-1998 | |
| CK | Conall Keogh | Reserved; Reserved | Conall Keogh | 19-Mar-1999 | |
| CL | CleverComponents | Clever Internet Suite components | www.clevercomponents.com | Sergey Shirokov | 22-Jan-2013 |
| CLG | Conlog(Pty) Ltd | Various | www.conlog.co.za | Campbell Fuller | 15-Jul-1999 |
| CM | Reserved | www.isleofjura.demon.co.uk | Craig Murphy | 21-Apr-1999 | |
| CM | various | www.chmaas.handshake.de | Christian Maas | 11-Feb-2000 | |
| cm | Cyril Kalinchikov | 21-Dec-2001 | |||
| CMD | Carlos Dagorret | VCL Contables | www.dagorre.com.ar | Carlos Dagorret | 30-Aug-2000 |
| CMPR | CompPair | reserved | www.emeraldis.com/~cburns/ | Chris Burns | 01-Apr-1999 |
| cmx | Clark Tisdale | Reserved | www.mindspring.com/~clark_tisdale/CDmax/ | Clark Tisdale | 19-Jan-2000 |
| CN | CN Software | Reserved; Reserved | www.cnsoft.de | Martin Niedergesaess | 30-Dec-1998 |
| CNM | CNetM | www.cnetm.de | Jochen Mueller | 09-Nov-1999 | |
| cns | Com-N-Sense | Liran Shahar | 22-Jul-2000 | ||
| cof | City of Fresno | various | www.ci.fresno.ca.us | Michael Bonner | 24-May-2000 |
| COL | Cocolsoft Computer Solutions | Reserved; Toolkit | www.cocolsoft.com.au | Peter Evans | 04-Aug-1998 |
| COMP | South Pacific Information Services Ltd | TCompress; Compression | www.webcentre.co.nz | Peter Hyde | 10-May-1998 |
| COM | Logan Software | LoganCOMPack; Comms AS400 | bruno adin | 22-May-1998 | |
| CON | Conspiracy Software | various | www.paranoia.clara.net/ | Dave Murray | 19-Sep-2004 |
| ContourCub | Intersoft Lab | ContourCube | www.ContourComponents.com | Vladimir Nekrasov | 15-Feb-2003 |
| Cool | CoolDev | many of them. | www.cooldev.com/ | Artem A. Berman | 28-Sep-1999 |
| coq | Thierry Coq | www.imaginet.fr/~tcoq | Thierry Coq | 15-Mar-2000 | |
| Core | Core Software Limited | Core Tools for Delphi | Malcolm Dalebo | 12-Dec-1999 | |
| CORY | Cory Osborn | TreeView; Tree | incolor.inetnebr.com/osborn/ | Cory Osborn | 05-May-1998 |
| CP | Compete Automatisering BV | Reserved; Reserved | www.compete.nl | Maurice Schoenmakers | 04-Aug-1998 |
| CP | TComPort | www2.arnes.si/~sopecrni | Dejan Crnila | 24-Jul-1999 | |
| CP | CellPoint Systems SA (Pty) Ltd | All | www.cellpt.co.za/ | Craig Nicholson | 04-Jul-2000 |
| CPC | ChoosePill components | TCPCConfigTreeView and others | www.choosepill.com | Sebastian Modersohn | 14-Jul-2000 |
| CPL | CommPass Point Ltd | Reserved; Reserved | www.commpass.co.uk | John Steventon | 13-Sep-1998 |
| Cpx | Various component packages | John H Jinks | 20-Dec-2004 | ||
| cq | Compu-Quote Inc | Ken St. Andrews | 18-Feb-2000 | ||
| CR | Tech III, Inc. | Code Rider (tm); DB RAD FrameWork | www.techIII.com | Richard Grossman | 18-Jul-1999 |
| cr | Tech III, Inc. | Code Rider (tm) | www.coderider.com | Richard Grossman | 05-Aug-2001 |
| CRAFTING | Santa Cruz Software | Reserved | Richard C Haven | 06-Jun-1998 | |
| CRF | Dial Soft Beheer b.v. | Reserved | Jan de Groot | 30-May-1999 | |
| CRG | CompuNet Resources, LLC | Reserved | www.CompuNetResources.com | Todd Frankson | 02-May-2000 |
| CRM | Chris Mulcahy | 29-Apr-1999 | |||
| CRQG | Code Rage Software Pty Ltd | Code Rage Query Generator | Glenn Stephens | 01-Feb-1999 | |
| CRR | DSI | DSICarrierPack | www.dsi.qc.ca/index.html | Mario Desrochers | 14-Sep-1999 |
| crw | Crowder | (all components) | www.crowderconsult.co.uk | Axel Gamble | 19-Sep-2000 |
| CR_ | Eagle Software Inc | CodeRush; IDE Enhance | www.eagle-software.com | mark miller | 27-Apr-1998 |
| CS | Classic Software | Classic Component Set; Tab and Page Control | www.classicsw.com | Dean Thompson | 03-Jun-1998 |
| CS | Component Store Ltd. | Several components, units and | component-store.com | Thomas Werner | 20-Apr-1999 |
| CS | Crafted Software Ltd. | Reserved | www.craftedsoftware.com | James Dooley | 22-Jun-1999 |
| CS | CSxxx | members.tripod.com/C_W_Smith/ | Chuck Smith | 30-Jun-1999 | |
| CS | Computer Support | Several components | Bjinse Veenstra | 28-Sep-1999 | |
| CS | Craiglockhart Software | www.craiglockhart.com/ | John C. Penman | 05-Dec-1999 | |
| CSC | Borland | CSCXXX | www.borland.com/techvoyage | Charlie Calvert | 12-Jun-1999 |
| CSC | CySoft.COM | CSCdbMaskEdit | www.cysoft.com | Onno Vrijburg | 05-May-2000 |
| CSI | cs-interglas | Reserved | www.cs-interglas.com | Roy Andrews | 29-Jun-1999 |
| CSI | CSI | Reserved | Eduardo Bottini | 09-Aug-1999 | |
| CSL | Campbell Scientific Ltd | www.campbellsci.co.uk/ | Sam Liddicott | 10-May-1999 | |
| css | Alain Quesnel | 11-Nov-2001 | |||
| CSX | Ackerson Software | CodeSiteEx | codesite.ackerson.us | Rich Ackerson | 02-Jun-2006 |
| CT | CTSoftware | Reserved; Reserved | Clayton Turner | 08-Aug-1998 | |
| CT2 | IncBtn | Clayton Turner | 28-Oct-1999 | ||
| CT3 | CT Software | CT3IncBtn | Clayton Turner | 23-Jun-1999 | |
| CTC | Computing Machinery Systems | CMS Telemetry and Commands | Albert Passy | 05-Apr-1999 | |
| ctx | Context Software | TCtxScript | www.contextsoft.com | Michael Baytalsky | 02-Jun-2006 |
| CV | Cervocom | Reserved | www.cervocom.com | Arnaud Chartier | 17-Aug-1999 |
| CVT | Creative Visual Technologies | www.cvtsoftware.com | Matthew Harris | 18-Mar-2003 | |
| CW | Cordaware Software | CordaWare; Toolkit | www.cordaware.com/ | 30-Dec-1899 | |
| CW | Innova Software | Calendar Works | www.innovasoftware.com | Matthew Styles | 06-Jun-1999 |
| CW | National Instruments | Mahesh Ramchandani | 06-May-2000 | ||
| CWA | ClassWorks Australia pty ltd | Reserved; Reserved | www.classworks.com.au | Andrew Rutherford | 01-Feb-1999 |
| CWC | Tecnimex srl | Company specific components | Carlo Wolter | 27-Sep-1999 | |
| CWSA | Corporate Web Services Australia Pty Ltd | Reserved | www.cwsa.com | Mark Brindle | 31-Jul-1999 |
| CX | CarbonSoft | cxCPU; Reserved | www.carbonsoft.com | Kev French | 01-Feb-1999 |
| cyb | CYBIS | various | www.cybis.com | Philip A. Hardin | 25-Jul-2000 |
| CYH | CyberHounds Ltd | Reserved; Reserved | www.cyberhounds.com | Ben Page | 04-Aug-1998 |
| CYR | Cyrious Software | Reserved | www.cyrioussoftware.com | Wesley Veitch | 19-Sep-1999 |
| CZ | CosmicZoo | Reserved | www.cosmiczoo.com | Jon Homan | 26-May-1999 |