Can anyone recommend software for running a web service similar to

We are looking for something similar to manage digital assets within the Computing History Special Interest Group.

One suggestion I've had is CKAN which looks very interesting but possibly more geared towards opening up an API to existing live data (such as an relational DB of stuff, distributed or otherwise). We are mostly concerned with relatively static data sets: source code archives, collections of various types of publications, collections of images, etc.

(Having said that, there are some interesting possibilities for projects that consume the data sets in some fashion, perhaps via a web service, for e.g. reviewing OCR results for old raster scans of papers.)

I envisage something similar to the software powering We want both something that lets people explore collections of stuff via the web, including potentially via machine-friendly APIs in some cases; but also ideally manage uploading and categorising items via the web as well.

I've also had suggestions to look at media-manager software, but what I've seen so far is designed for personal media collections like movies, photos, etc., and focussed more on streaming them to LAN clients.

Can anyone recommend something worth looking at?