Here are a couple of instant message clients for you. One you might find easy and quick to adopt. The other … you might need to be a polyglot.
I can’t help you much with ekg, on the left. This one, like adresownik, probably requires fluency in a second language (I am assuming Polish again?) to get started. And unfortunately, for all my talents, this language is not one of them.
I think my quest for a text-based instant messenger that handles encryption may be over. The home page for ekg2 suggests it can handle gpg or rot, but it might take some time for me to get it set up. I’ll update if I do.
As a last note I should mention that ekg2 has a GTK interface; that might be important if you want the flexibility of working graphical or text-only.
I think that will do for now. There’s a long list of software out there, and it can’t wait for me to prattle on endlessly. 😐