We have been using the Acronova Nimbie for several years now and are pretty happy with it. I know of several other repositories also using it. I first found out about it via
this article published a few years ago in Code4Lib Journal. The software it comes with is not well suited to our workflow, so, like NYPL describes in the article, we've been using
Iromlab, open source software developed by someone at the Library of the Netherlands and available on GitHub, with a few tweaks. Happy to share more details if you are interested.
/ Lara Friedman-Shedlov