I recently updated DOCON, the Directory of Consulting Firms active in International Development Cooperation at http://www.docon.info. Here you can find service providers, consortium partners or employers. The list is sorted by country of Headquarters. Companies are listed world-wide, but I make an effort to cover the European Union Member States and the ACP African, Caribbean, Pacific Group of Countries, as many consortia are formed in these regions.
Please help growing this directory. I especially look for more African consulting companies as local partners, as are currently listed here: http://www.weitzenegger.de/docon/htm/acp.htm. Everyone can suggest an entry at http://www.weitzenegger.de/content/?page_id=7901. It’s free and hand-edited, so no spam appears.