AngelList - Access top deals through investor-led syndicates
GiveSmart - GiveSmart offers mobile bidding and event management for charity fundraisers .
Investors Club - Profitable online businesses vetted & handed right to you
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.
Auction Harmony - Auction Harmony offers auction technology to help nonprofits reach their fundraising goals.
OneCause - Fundraising auction & event management software