Sources


International sources


TED
The World Bank
United Nations
United Nations Procurement Notices (UNDP)
Inter-American Development Bank (IDB)
The European Bank for Reconstruction and Development (EBRD)
Tenderguru.ru

Regional procurement sources


Federal Business Opportunities
gov.uk Contracts Finder
Canada - Procurement Data
Australian Government
and many others...

more than 2000 electronic sources

B2B Marketplaces


alibaba.com
Indiamart
Exportersindia
and many others...