On Sun, Apr 26, 2015 at 2:18 PM, Jiri Eischmann <firstname.lastname@example.org> wrote:
The server part of Telegram is closed source, but they've promised to open source it when it's ready. The API/protocol is open, existing clients are open, the server side is promised to be open in near future. I don't think Telegram scores badly in terms of openness. What they're not planning is an infrastructure of independent servers though.