Wycliffe College Institute for Evangelism in Canada have a website with lots of resources and links to a directory for finding them. EvangelismUK specialises in home networks, rather than resources from other parts of the world, but I thought this one has a lot of synergy with UK context, so here is reference to:
The Catholic Agency to Support Evangelisation have produced an extensive directory in both online and printed formats. With 250 entries it covers everything from Catholic mission teams, to small communities; evangelistic agencies, to courses. Brief descriptions and and full contact details are given for each entry. The whole directory is broken down in to helpful categories. It is a major resource for the wider church.