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Paul Schaub cef58fde24 obey to checkstyle static rule 3 years ago
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smack-android Merge pull request #346 from vanitasvitae/fixAndroid 3 years ago
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smack-bosh Introduce StanzaBuilder 3 years ago
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smack-core XEP-0084: User Avatars 3 years ago
smack-debug Rework XML Element hierarchy and XmlStringBuilder 3 years ago
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smack-java7 smack-java7: Add missing smack-xmlparser-stax dependency 3 years ago
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smack-omemo-signal-integration-test SmackReactor/NIO, Java8/Android19, Pretty print XML, FSM connections 4 years ago
smack-openpgp Introduce StanzaBuilder 3 years ago
smack-repl Organize imports everywhere 3 years ago
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smack-resolver-minidns-dox Replace XPP3 by XmlPullParser interface wrapping StAX and XPP3 3 years ago
smack-sasl-javax sasl-javax: Do not set system properties in SASLGSSAPIMechanism 3 years ago
smack-sasl-provided gradle: Remove archives configuration 3 years ago
smack-tcp s/occured/occurred/ 3 years ago
smack-xmlparser smack-xmlparser: Improve ISE message 3 years ago
smack-xmlparser-stax Use XMLInputFactory.newInstance() instead of newFactory() 3 years ago
smack-xmlparser-xpp3 Replace XPP3 by XmlPullParser interface wrapping StAX and XPP3 3 years ago
.gitignore Add to gitignore 3 years ago
.travis.yml gradle: Switch to 'maven-publish' plugin 3 years ago
LICENSE Add Appendix to LICENSE 5 years ago Update Readme link in Readme 4 years ago
build.gradle gradle: Ensure git command is run projectDir rather than CWD. 3 years ago
repl Bump Ammonite REPL to 1.3.2 4 years ago
settings.gradle Replace XPP3 by XmlPullParser interface wrapping StAX and XPP3 3 years ago
version.gradle Bump BouncyCastle to 1.62 3 years ago


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Smack is an open source, highly modular, easy to use, XMPP client library written in Java for Java SE compatible JVMs and Android.

A pure Java library, it can be embedded into your applications to create anything from a full XMPP instant messaging client to simple XMPP integrations such as sending notification messages and presence-enabling devices. Smack and XMPP allows you to easily exchange data, in various ways e.g. fire-and-forget, publish-subscribe, between human and non-human endpoints (M2M, IoT, …).

More information are provided by the Overview.

Getting started

Start with having a look at the Documentation and the Javadoc.

Instructions how to use Smack in your Java or Android project are provided in the Smack Readme and Upgrade Guide.

Professional Services

Smack is a collaborative effort of many open source, professionally and spare-time, paid and unpaid, contributors. While we try to provide the best possible XMPP library for Android and Java SE compatible execution environments by following state of the art software engineering practices, the API may not always perfectly fit your requirements. We welcome contributions and encourage discussion about how Smack can be further improved. We also provide paid services ranging from XMPP/Smack related consulting to designing and developing features in order to accommodate your needs. Please contact Florian Schmaus for further information.

Bug Reporting

Only a few users have access for filling bugs in the tracker. New users should:

  1. Read "How to ask for help or report an issue"
  2. Create a discourse account (you can also sign up with your Google account).
  3. Login to the forum account
  4. Press "New Topic" in your toolbar and choose the 'Smack Support' sub-category.

Please search for your issues in the bug tracker before reporting.


If you find Smack useful and feel like donating, then you can use one of the following systems:

  • Donate via Bitcoin: 1LiU78z3498wu3jwRPKbvovKAHjTcpVbuK


The developers hang around in #smack (freenode, IRC) and (XMPP MUC room). Remember that it may take some time (~hours) to get a response.

You can also reach us via the Smack Support Forum if you have questions or need support, or the Smack Developers Forum if you want to discuss Smack development.


If you want to start developing for Smack and eventually contribute code back, then please have a look at the Guidelines for Smack Developers and Contributors. The guidelines also contain development quickstart instructions.


Ignite Realtime

Ignite Realtime is an Open Source community composed of end-users and developers around the world who are interested in applying innovative, open-standards-based RealTime Collaboration to their businesses and organizations. We're aimed at disrupting proprietary, non-open standards-based systems and invite you to participate in what's already one of the biggest and most active Open Source communities.

Smack - an Ignite Realtime community project.