aTalk might be a bit more popular than yaxim. We know about 1 link to it since March 2021 and only 1 link to yaxim. 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.
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
aTalk (version 3.0.5): XMPP/Jabber client with encrypted instant messaging and video calls. Source: over 1 year ago
GoldBug - GoldBug is a secure Instant Messenger.
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Five9 - Five9 provides cloud-based call center software for sales, marketing and support.
Olvid - The most secure messaging app in the world.