Covetly - Collectibles marketplace with appraisal tools
GiveSmart - GiveSmart offers mobile bidding and event management for charity fundraisers .
Thinga.Me by Microsoft - Make virtual collections of your real stuff
Silent Auction Pro - Simple * Affordable * Powerful --- Silent Auction Pro is a multi-user, internet-based fundraising software system providing complete donor and auction management solution for charitable organizations.
Lofty - Trusted Marketplace for Fine Arts, Antiques and Collectibles
OneCause - Fundraising auction & event management software