Been looking around on the web for one of these, but I'm only finding node.js/ruby hosted implementations.
I'm keen to have a DynamoDB app, something like that of the navicat ilk that comes with an msi installer to get running quickly.
Maybe there's a valid reason as to why one of these doesn't exist yet?
If you are using DynamoDB local for development you can use the built-in DynamoDB shell: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Tools.DynamoDBLocal.Shell.html