Is there an equivalent of Rob Conery's Massive for NoSQL (MongoDB)?
I like Massive very much, but I'd like to use it with NoSQL databases, especially with MongoDB and I can't find a decent alternative.
If you are interested in the 'single file' aspects of it then it shouldn't be too hard to create something using the Bson serializer / deserializer code provided in the MongoDB driver to store Bson documents in the file system.
If you are interested in the query aspects of it, SQL isn't the right language to query a document store like MongoDB.
And finally, if you are interested in the dynamic aspects of it, well the closest I've found to that so far is my own blog post on using dynamic objects with MongoDB.