The btcsuite project started out of a desire to create high quality and usable Bitcoin tools and libraries. Early on, it was decided that Go, a type-safe and portable language, would be used. Go has been a great tool for us, but one sticking point has been the area of native graphical frontends for our software. Some previous attempts were made to write GUIs in Go, but the user experience always suffered in one way or another.
We still wanted to provide a nice graphical interface to our software that a user would enjoy using. To solve this issue, we took the pragmatic approach of developing native GUIs with languages well supported by their respective operating systems.
Paymetheus is the first result of this development. It is a Bitcoin wallet for the Windows 7/8.1/10 operating systems written in C# and WPF. Paymetheus reuses much of our existing Go code by using RPC to communicate with btcwallet under the covers. Like all of our open source software, it is freely available under the ISC License.