XMPP for Android
Using:
Smack API - http://www.igniterealtime.org/projects/smack/index.jsp
 XMPP client library
Jzlib - http://www.jcraft.com/jzlib/
 zlib-compression for XMPP
JSTUN - http://jstun.javawi.de/
 STUN as described in RFC 3489 - required for Jingle
Apache Harmony - http://harmony.apache.org/
 some parts missing in Android...
XML Pull Parser (XPP3) - http://www.extreme.indiana.edu/xgws/xsoap/xpp/
 used by Smack for XMPP-Parsing
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file(s) except in compliance with the License.
 You may obtain a copy of the License at
 http://www.apache.org/licenses/LICENSE-2.0
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.