| 300Software |
| Achilles Group Limited |
| ACIN, Academia de Informática Brava, Engenharia de Sistemas, Lda |
| Administration Intelligence Austria GmbH |
| Агенцията по обществени поръчки - Public Procurement Agency |
| Agysoft |
| Atexo |
| Auftragnehmerkataster Österreich |
| Auftragsberatungsstelle Hessen e.V. |
| Avenue-Web |
| Beschaffungsamt - Procurement Agency of the Federal Ministry of the Interior |
| Delta eSourcing |
| BOAMP |
| JAGGAER |
| BRM Romanian Commodities Exchange |
| CDM A/S |
| COSINEX GmbH |
| Net4market - CSAmed s.r.l. |
| Department of Contracts of the Government of the Republic of Malta |
| Direccion General del Patrimonio del Estado |
| Dematis |
| Dittrich Software GmbH |
| Due North |
| Electronic System for Public Procurement – Romanian Agency for Digital Agenda |
| eB2B |
| EBP |
| Maggioli S.p.A. |
| EU Supply |
| European Dynamics SA |
| Euskadi - Basque Government |
| Groupe Moniteur (Marchés Online) |
| Healy-Hudson |
| Hilma - Ministry of Finance / Valtiovarainministeriö |
| IBM Emptoris |
| IFaber |
| Igris |
| Imprensa Nacional - Casa de Moeda |
| Bauausschreibungen in Österreich |
| Innovasion |
| Intenda |
| In-Tend Limited |
| Ivalua |
| Konkurrence- og Forbrugerstyrelsen |
| Kozbeszerzes - Public Procurement Authority |
| La Poste |
| Market Planet - Otwarty Rynek Elektroniczny S.A. |
| Matrix SCM |
| Mercell Danmark A/S |
| Proactis Tenders Limited |
| Ministère de la Mobilité et des Travaux publics – Département des Travaux publics |
| Ministry of Regional Development |
| Negometrix |
| Official Gazette in Croatia |
| PRO-Q of Venicecom Srl |
| Proactis Public Sector Division |
| Public Procurement Directorate - Treasury of the Republic of Cyprus |
| RIB Deutschland GmbH |
| Schweizerisches Handelsamtblatt (SHAB) |
| SNCF(Société Nationale des Chemins de Fer Français) |
| Staatsanzeiger ONLINE LOGISTIK GmbH |
| Studio Amica Società Cooperativa |
| Supplierforce |
| e-Procurement – FPS Policy and Support (BOSA) |
| Stichting Crow |
| Südtiroler Informatik AG |
| TenderNed |
| Tendersmart |
| Total Soft |
| Uradni list-SI |
| Welsh Development Agency |
| Vemap |
| Wiener Zeitung GmbH |
| Viešųjų pirkimų tarnyba |
| Visma |
| Vortal Connecting Business |
| Xtender Deals |
| Administration Intelligence AG |
| Digital PA |
| subreport Verlag Schawe GmbH |
| Allocation Network GmbH |
| eVergabe.de GmbH |
| bi medien GmbH |
| Comcare a/s |
| ADB (UK) Limited |
| Atline |
| e-Avrop |
| SourceDogg |
| 3P - Public Procurement Partners |
| Primona |
| Vizson |
| Aanbestedingskalender NL |
| Portal PZP |
| Logintrade S.A. |
| Open Nexus Sp. z o.o. |
| Aumass |
| Oracle Consulting UK |
| Centro Hospitalar Universitário Lisboa Norte, E.P.E. |
| TrueLink A/S |
| Procurement Monitoring Bureau of the Republic of Latvia |
| Dropbinder |
| ZetoPZP - Platforma Zamówień Publicznych ZETO Lublin |
| The triSaaS Group Ltd |
| SIDAS PZP - Platforma Zamówień Publicznych |
| Syskoplan Reply |
| Comdia ApS |
| PBMG eG |
| SAP SE |