| A | ||
| ABNAMRO Bank | Adecco | Adfocom |
| Akzo Novel | ANWB | Apettito |
| Aquarius | Asito | Astra Zeneca |
| Attero | ||
| B | ||
| Baan Twente | Ballast Nedam | BAM Utiliteitsbouw |
| Bavaria | Belastingdienst | Biotronik Nederland |
| Blaak en Partners | Blueprint Partnership | BMW Dealervereniging |
| Brandweer Twente | ||
| C | ||
| C3 Adviseurs en Managers | Capgemini Nederland | Carint Reggeland Groep |
| Carglass | Celgene | Centraal Beheer Achmea |
| CBM | Ceves Vergeer | Claasen Coatings |
| CLB Benelux | ||
| D | ||
| Data B Mailservice | Datapross Nijbroek | Dalton Medical |
| DCE Consultants | Deloitte & Touche | De Vrije Energieproducent |
| Domesta Woningstichting | Dorhout Advocaten | Draaijer & Partners |
| Dutch Shape | Drukkerij Roelofs | DSM |
| Dura Vermeer Divisie Infra | ||
| E | ||
| Edo | Electromach | Eneco Energie |
| Ernst & Young | eServiceware | Essent |
| Europa Tuin | Exacte Software | |
| F | ||
| Ferrero Nederland | Finan Financial Analysis | Flowserve Pump Division |
| Flynth Accountants | Forbo Eurocol | Fortis Bank |
| Freshfields | Frits Wolf Tuinmeubelen | |
| G | ||
| Gardena Nederland | Gasuinie | Geas |
| Geldnet | Gemeente Arnhem | Gemeente Enschede |
| Gemeente Hengelo | Genzyme | GITP |
| GlaxoSmithKline | Grolsche Bierbrouwerij | |
| H | ||
| Harvey Nash | Heineken Nederland | Hekkelman Advocaten |
| Heymans | Hewlett Packard Nederland | Houthoff Buruma |
| Howden | Huuskes Versproducten | HW Wonen |
| Hyundai Nederland | ||
| I | ||
| Imabo Concordia | ING Bank | Interpay |
| ISS Hospital Services | ||
| J | ||
| Jarabee Jeugdzorg | Johma | JP vd Bent Stichting |
| K | ||
| KLM | KMS Unternehmensgruppe | KPMG |
| Kroon Oil | ||
| L | ||
| Lesscher IT | Lighthouse Club Nederland | Lithos Bouw |
| M | ||
| Maquet Netherlands | MCX | Medisch Spectrum Twente |
| Mojo Concerts | ||
| N | ||
| Nationale Nederlanden | NAM | Nijhof Wassink |
| NykampNyboer | Nijhuis Bouw | Nilfisk Advance |
| Norit Process Technology | Novartis | Novesta Consulting |
| Novius | Nuon | Nutricia |
| NXP | ||
| O | ||
| OAD | Obimex | Oce Nederland |
| Odin Groep | Ohra Bank | Ondernemingshuis Twente |
| ONVZ Zorgverzekeraar | Oracle | Ordina |
| Oriflame | ||
| P | ||
| PC Ware | Persoonality | Piet van der Niet Katwijk |
| PinkRoccade | Ploeger Oxbo Groep | Politie Rotterdam |
| PQR | PriceWaterhouseCoopers | Primat Projectservice |
| Primato Scholengroep | Print Partners Ipskamp | Progress Software |
| Projob Uitzendbureau | Provincie Overijssel | |
| Q | ||
| Qua Wonen | ||
| R | ||
| Rabobank | Randstad Uitzendbureau | Redubel |
| Reef Infra | ROC Twente | Rojo Steigerbouw |
| S | ||
| Salix Verzekeringen | Sena | Shell Nederland |
| Siemens | Sigmax ICT | SMC Alarmcentrale |
| Solidium | Spie Nederland | Stichting Carmel College |
| Stichting CBS | Streekziekenhuis Coevorden | Strukton Groep |
| Syncforce | ||
| T | ||
| Thales | TNT | Trendhopper Holding |
| TUI Nederland | Tyco | |
| U | ||
| Ulamo Groep | Universiteit Twente | Urenco Nederland |
| UWV | ||
| V | ||
| VCK Travel | Vepa | VMRG |
| Vredestein Banden | V&D | Vrumona |
| W | ||
| Winclove Bio Industries | Winvision | Woningcorp. De Woonplaats |
| Woningcorp. Domijn | Woningcorp Eigen Haard | |
| X | ||
| Xerox |
