Hello researchers, I am looking for a list (min of 10) of main/top
sources for obtaining information on I.T. (information
technology)related RFP or Tenders.

How can i learn about open RFPs, or companies looking to buy a
particular IT product (besides being in touch with the company that
publish it, or using the following websites: www.tendersinfo.com or
http://www.tenders.com - from my experiense they provide a very
limited help when it comes to IT products)?

For example, how can I learn about the current open RFPs/Tenders for
Billing Systems?

Thanks and wishing you a great week.