Boltgram is a fast, secure and nice messaging app that uses Telegram’s API. You can enjoy all the features of Telegram, such as end-to-end encryption, cloud-based storage, group chats, channels, bots, stickers, and more. But that’s not all.
Quicksy Alternatives
Quicksy is described as 'A spin-off of the popular Jabber/XMPP client Conversations with automatic contact discovery' and is a instant messenger in the social & communications category. There are more than 25 alternatives to Quicksy for a variety of platforms, including Android, iPhone, Mac, Windows and Linux apps. The best Quicksy alternative is Signal, which is both free and Open Source. Other great apps like Quicksy are WhatsApp, SimpleX Chat, Wire and Threema.