I believe Upsource ( https://www.jetbrains.com/upsource/ https://www.jetbrains.com/upsource/ ) and Sourcegraph ( https://about.sourcegraph.com/ https://about.so

I believe Upsource ( https://www.jetbrains.com/upsource/ https://www.jetbrains.com/upsource/ ) and Sourcegraph ( https://about.sourcegraph.com/ https://about.sourcegraph.com/ ) are both code-aware in that sense.