We use the version in the master branch at CodeGuard to transfer many terabytes into and out of S3 daily. While I hesitate to call it "production-ready", as tha

We use the version in the master branch at CodeGuard to transfer many terabytes into and out of S3 daily. While I hesitate to call it "production-ready", as that means different things to different people, we do use it in production with no issues. If you want to try it without having to install go, there are statically linked binaries for OSX and Linux Amd/64 linked on the github page that should run on any distro without having to install any dependencies. If you have any issues or questions, feel free to contact me at the email in my HN profile. I hope it works for your use case! :)