The following sites are friends of ours, worthwhile projects and/or other travel companies that are running tours responsibly in this under-visited part of the world.
Overlanding West Africa – One of the only companies offering genuine overland trips throughout the region, and perhaps the only to go through Guinea, Sierra Leone, and Liberia. Great ownership team committed to giving their clients an awesome travel experience.
TransAfrica – They have been running trips in West Africa since 1985, with a special focus on festivals and cultural celebrations.