This site is rarely updated. benbrophy.com is more up-to-date. - Ben
MDID
MDID is an open source project with much in common with Stellar Images.
"Developed at James Madison University, the Madison Digital Image Database (MDID) software brings the digital image library into the teaching and learning process."
The big difference is that MDID is an image repository, ours is a tool that accesses image repositories (it could potentially access MDID repositories along with DSpace, HarvestRoad, etc.) MDID os moving towards accessing other repositories, but the general approach of Stellar Images is much lighter.
MDID is worth keeping an eye on - it has many of the feature we might strive for in future releases. One possible disadvantage for us is that it's an ASP/.NET application.