Just over a year ago, we were in a similar position to yours, and wanted both a discovery layer and a Fedora-based digital asset management system for Stanford.
We ended up adopting Blacklight for both our next generation catalog  and as the UI providing discovery / viewing component of our repository. To complement BL's strong searching / browsing / multi-format object viewing capabilities, we are building a Ruby-on-Rails-based repository front end application to provide the deposit / editing / object management capabilities.
This architecture and overall approach is a multi-institutional project called Hydra , with Stanford, University of Virginia and University of Hull being the primary contributors at this point. The app makes use of ActiveFedora  as the bridge between the Fedora and the Rails apps.
By our calculations, this gave us the best of three worlds--Blacklight provides a single platform both for discovery and part of our repository front end, we leverage Fedora for its asset management capabilities, and the Hydra / ActiveFedora components let us do rapid application and flexible application development for our DAM needs.
The project is still young, but all the project code is open source, and adopters/contributors/partners are welcome.
| Tom Cramer
| Stanford University
| [log in to unmask]
On Mar 29, 2010, at 12:37 PM, Adam Wead wrote:
> Thanks, yes, I did take a look at this. I have to pick my battles here. A discovery interface is one of the things that we could buy "off the shelf" and get a lot of good mileage out of. I'm devoted to open source and I would love nothing more than to roll our own with Blacklight, but that's more work on top of the DAM issue. I chose not to delve into the Blacklight option to save myself more time to focus on the asset manager issue, which is where I *think* I'll be having to work the most.
> Of course, I'm open to suggestions. Does anyone think it's easier to do your own discovery layer than a DAM? Potentially, the money we save not buying a discovery layer could go towards buying a DAM. However, the products we're looking have some really great interfaces. I think I'd be looking at an equally difficult challenge trying to emulate some of those features on my own.
> -----Original Message-----
> From: Code for Libraries on behalf of Ethan Gruber
> Sent: Mon 3/29/2010 3:00 PM
> To: [log in to unmask]
> Subject: Re: [CODE4LIB] need a plan for what to code
> Instead of purchasing a discovery system, I recommend using
> Rock & Roll: (noun) African American slang dating back to the early 20th Century. In the early 1950s, the term came to be used to describe a new form of music, steeped in the blues, rhythm & blues, country and gospel. Today, it refers to a wide variety of popular music -- frequently music with an edge and attitude, music with a good beat and --- often --- loud guitars.© 2005 Rock and Roll Hall of Fame and Museum.
> This communication is a confidential and proprietary business communication. It is intended solely for the use of the designated recipient(s). If this communication is received in error, please contact the sender and delete this communication.