yaxim might be a bit more popular than aTalk. We know about 1 link to it since March 2021 and only 1 link to aTalk. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
aTalk (version 3.0.5): XMPP/Jabber client with encrypted instant messaging and video calls. Source: over 1 year ago
XMPP messengers (e.g. Yaxim are distributed along lots of servers, so there's one entity who can decrypt your data. However, encryption takes a few extra steps (unlike Signal, which is automatic). Most people don't use XMPP apps, so it won't serve to contact most people. Source: about 1 year ago
FluffyChat - Open. Nonprofit. Cute ?
GoldBug - GoldBug is a secure Instant Messenger.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
BitMail - Secure decentral P2P Email
Molly (Signal fork) - Molly is an independent Signal fork for Android
Five9 - Five9 provides cloud-based call center software for sales, marketing and support.