Conduit is an open-source data streaming tool that comes with a MongoDB connector (amongst others). The complete benchmarking setup is open-source. Disclaimer:

Conduit is an open-source data streaming tool that comes with a MongoDB connector (amongst others). The complete benchmarking setup is open-source. Disclaimer: I'm part of the team working on Conduit. If you have any questions, comments or suggestion how to improve the benchmarks, feel to comment!