Hi Lauren,
whilst I have only used one Sales Enablement tool myself, I'm constantly updating the following list with all tools I find in the market place. It does reflect recent mergers and acquisitions. The last update was in 2012:

http://salesenablement.wordpress.com/2011/07/03/work-in-progress-list-of-sale...

The definition of Sales Enablement, I use to decide whether a tool makes it on the list, is from IDC:
“The delivery of the right information to the right person at the right time in the right format and in the right place to assist in moving a specific sales opportunity forward.”

Nancy Nardin

CEO, Smart Selling Tools

Posted on Feb. 6, 2012

If Sales Enablement means "enabling reps to sell more, faster, or easier," there are lots of great tools.Here are a few aimed at different points in the sales pipeline:
- Prospecting Enablement: OneSource iSell
- Social Selling: IntroRocket
- Sales Rep Activity Reporting: Front Row Solutions
- Sales Motivation & Contests: Sales Contest Builder
- Electronic Signatures: DocuSign
- Proposal Automation: Qvidian

Meagen Eisenberg

Vice President of Demand Generation, DocuSign Inc.

Posted on Feb. 6, 2012

Here is one that CSO Insights recommends: http://www.docusign.com/sites/default/files/A_Sales_Reps_Digital_Admin_CSO_In...

Sarah Welle

Posted on Feb. 7, 2012

If you're a manufacturer selling in a B2B scenario, use a tool to get your catalog & pricing online, then customize & share a private "view" of your product catalog with current & potential customers.

This lets you privately show different pricing to different customers. It also lets you share only the product lines a particular customers cares about, rather than your entire catalog. Example would be a customer that only wants to buy your Educational Toys, not your entire Toy Catalog.

Here's a blog post with more info on this concept: http://blog.rocware.com/2011/12/product-catalog-for-manufacturers.html