The following Web-based user interfaces will allow filtering and searching of the 2XMMi catalogue
using a number of methods:-

• ARNIE5 at LEDAS, University of Leicester
  
• XSA at ESA's XMM-Newton SOC
  
• XCAT-DB at the SSC institute, OA Strasbourg
  
• Browse or Browse 2XMM at HEASARC NASA GSFC

Virtual Observatory searchable resources which will allow filtering and searching of the 2XMM catalogue
along with correlation against any other VO registered archives will shortly be available from LEDAS, XSA
and HEASARC. Please see http://www.astrogrid.org and http://www.euro-vo.org/pub/index.html for further
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