1.igniterealtime / OpenfireAn XMPP server licensed under the Open Source Apache License.openfirexmppxmpp-serverjavacollaborationjabber+1 moreJavaAPACHE-2.03.1K total1.4K forks+25 starsfrom 3,049 · score 3.26
2.igniterealtime / SmackA modular and portable open source XMPP client library written in Java for Android and Java (SE) VMsxmppxmpp-client-libraryjavaandroidandroid-libraryjava-library+1 moreJavaAPACHE-2.02.4K total882 forks+2 starsfrom 2,412 · score 1.10
3.tigase / tigase-serverHighly optimized, extremely modular and very flexible XMPP/Jabber servertigasexmppserverjavajabberiot+7 moreJavaAGPL-3.0358 total110 forks+2 starsfrom 356 · score 1.10