http://gitsense.github.io/

Search/code management metrics are done at the branch level and there will be case-sensitive searches. The indexers are already building case sensitive indexes, it's just that it hasn't been enabled.

Unfortunately I can't say when the indexer will be available for private use at the moment.

Edit:

Forgot to mention that because the indexing is done at the branch level, searching across branches to verify what is/isn't present is pretty trivial like the following example:

http://gitsense.github.io/images/gitsense-on-4.png