Android Apps

• Conversations - an encrypted, mobile friendly XMPP client for Android
• Ltt.rs - No-frills, easy to use, easy to maintain Email client for Android based on the JSON Meta Application Protocol (JMAP)

Both apps are available in my F-Droid repository.

Libraries

• Java JMAP library - A Java library for the JSON Meta Application Protocol
• Java Autocrypt library - A Java library that implements the Autocrypt Level 1 specification

Server

• up - A Unified Push Provider using XMPP as a transport mechanism. It communicates with Conversations, which acts as a Unified Push Distributor.
• Conversations Push Proxy - An XEP-0357: Push Notifications app server that relays push messages between the user’s server and Googles Firebase Cloud Messaging.
• Quicksy Server - The backend server for Quicksy which handles both registration of new users (verified by SMS) and phone number to Jabber ID discovery.