Whydon't you implement the connection types to into the app instead of exporting them to external apps?
At least for the most commonly used it should be done.
I am working on integrated SSH connections. The problem is, that there is no library which does that for iOS (as there is for Windows). I have to implement everything on my own. And that's simply a lot of work which will most probably never pay back.
But as I said, I'm working on it. So stay tuned.