This is a tick for fundraisers, but you have to become a member to get it. Paid membership! If you are fundraising, it may give people that bit of comfort that you are in a database.
"fund raising standards board" FRSB tick credibility logo competitor, but free with no fee ;o). A service to put the minds at ease of potential donors. How good? Dunno, got here from Thirdsector Mag.