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Paul Schaub a749bc4cc4
Temporary commit
1 year ago
config Merge branch '4.3' 1 year ago
documentation Improve Roster documentation ( 1 year ago
resources Smack 4.3.3 1 year ago
smack-android Make StringEncoder generic 1 year ago
smack-android-extensions Enable Xwerror for smack-android-extensions 1 year ago
smack-bosh Smack 4.3.3 1 year ago
smack-compression-jzlib Enable trailing whitespace checkstyle check 2 years ago
smack-core Smack 4.3.3 1 year ago
smack-debug Introduce XmlEnvironment 1 year ago
smack-debug-slf4j Introduce XmlEnvironment 1 year ago
smack-experimental Smack 4.3.3 1 year ago
smack-extensions Smack 4.3.3 1 year ago
smack-im Use XmlEnvironment in parsing/provider subsystem 1 year ago
smack-integration-test Temporary commit 1 year ago
smack-java7 Drop OSGi support 1 year ago
smack-jingle-old Use XmlEnvironment in parsing/provider subsystem 1 year ago
smack-legacy Use XmlEnvironment in parsing/provider subsystem 1 year ago
smack-omemo Temporary commit 1 year ago
smack-omemo-signal Temporary commit 1 year ago
smack-omemo-signal-integration-test SmackReactor/NIO, Java8/Android19, Pretty print XML, FSM connections 1 year ago
smack-openpgp Use XmlEnvironment in parsing/provider subsystem 1 year ago
smack-repl Introduce XmlEnvironment 1 year ago
smack-resolver-dnsjava Bump MiniDNS to 0.3.0 2 years ago
smack-resolver-javax Add note about module dependencies to JavaxResolver 1 year ago
smack-resolver-minidns Remove SmackDaneVerifier.finish(SSLSocket) 1 year ago
smack-sasl-javax Introduce SmackSaslException 1 year ago
smack-sasl-provided Introduce SmackSaslException 1 year ago
smack-tcp Smack 4.3.3 1 year ago
.gitignore Add OMEMO support 3 years ago
.travis.yml travis: Install graphviz 1 year ago
LICENSE Add Appendix to LICENSE 3 years ago Update Readme link in Readme 1 year ago
build.gradle Enable full stacktraces of failed tests in console 1 year ago
repl Bump Ammonite REPL to 1.3.2 1 year ago
settings.gradle XEP-0373, XEP-0374: OpenPGP for XMPP: Instant Messaging 1 year ago
version.gradle Smack 4.3.3 1 year ago


Build Status Coverage Status Project Stats Visit our IRC channel


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.