Bidding and invoicing software for creative professionals. Billed as "shockingly easy to use," it is aimed at everyone from freelancers to agencies. According to Blinkbid, it is easy enough to produce your first bid in minutes, yet powerful enough to customize to the exacting needs of your business work flow.
Try Blinkbid for free; a two-week trial version is downloadable from the Blinkbid site. The manual is online at http://blinkbid.com/help/.