Brigada is growing collection of web- and email-based resources. Their Brigada Today, a web journal, offers resources, strategy tips and tools to Great Commission Christians.
Missions Catalyst is a free, weekly electronic digest of mission news and resources designed to inspire and equip Christians worldwide for global ministry. You can use it to fuel your prayers, find tips and opportunities, and stay in touch with how God is building His kingdom.
OSCAR is a mission portal that helps missionaries, prospective missionaries, supporters of missionaries, and Christian workers on the field to locate organizations, services and resources they need. It delivers UK-related information, advice and resources especially to those who are interested or involved in missionary, and/or Christian work overseas.
Web Evangelism Guide
The Web Evangelism Guide is a resource from Internet Evangelism Day. It explains many strategies for evangelism, both on the web and elsewhere.