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Paul Schaub 0fea306658
Improve maintainability
2 years ago
.github Add Github Pull Request Template 3 years ago
config [checkstyle] Bump to 8.27 2 years ago
documentation Initial support for XEP-0446: File Metadata Element 2 years ago
resources Smack 4.4.0 2 years ago
smack-android gradle: use compileClasspath instead of compileOnly 2 years ago
smack-android-extensions gradle: add Android jar to smack-android-extensions compile classpath 2 years ago
smack-bosh Introduce Smack's Modular Connection Architecture 2 years ago
smack-core Smack 4.4.0 2 years ago
smack-debug Add org.jivesoftware.smack.Smack with getVersion() and ensureInitialized() 2 years ago
smack-debug-slf4j [core] Deprecate AbstractConnectionListener 2 years ago
smack-experimental Improve maintainability 2 years ago
smack-extensions Smack 4.4.0 2 years ago
smack-im Delete TypedCloneable 2 years ago
smack-integration-test Merge branch '4.4' 2 years ago
smack-java8 Rename smack-java7 to smack-java8 2 years ago
smack-java8-full Merge branch '4.4' 2 years ago
smack-jingle-old Introduce test fixtures 2 years ago
smack-legacy Re-work data form API 2 years ago
smack-omemo [extensions] Deprecate old-style PepManager PEP listeners 2 years ago
smack-omemo-signal [checkstyle] Tighten JavadocMethod checkstyle rule 2 years ago
smack-omemo-signal-integration-test SmackReactor/NIO, Java8/Android19, Pretty print XML, FSM connections 4 years ago
smack-openpgp OpenPgpManager: Expose methods to generate and import keys 2 years ago
smack-repl Merge branch '4.4' 2 years ago
smack-resolver-dnsjava resolver-dnsjava: bump to dnsjava 3.0 series 2 years ago
smack-resolver-javax Introduce Smack's Modular Connection Architecture 2 years ago
smack-resolver-minidns Introduce Smack's Modular Connection Architecture 2 years ago
smack-resolver-minidns-dox Introduce test fixtures 2 years ago
smack-sasl-javax Introduce test fixtures 2 years ago
smack-sasl-provided Introduce test fixtures 2 years ago
smack-streammanagement Create smack-streammanagement project and move code there 2 years ago
smack-tcp Merge branch '4.4' 2 years ago
smack-websocket s/Websocket/WebSocket/ 2 years ago
smack-websocket-okhttp s/Websocket/WebSocket/ 2 years ago
smack-xmlparser smack-xmlparser: Improve ISE message 3 years ago
smack-xmlparser-stax [xmlparser-stax] Disable external entities and DTD 2 years ago
smack-xmlparser-xpp3 Introduce test fixtures 2 years ago
.gitignore Add to gitignore 3 years ago
.mailmap Add .mailmap 2 years ago
.travis.yml [travis] Only run javadocAll on Java 11 or higher 2 years ago
LICENSE Add Appendix to LICENSE 5 years ago
NOTICE Add NOTICE file 2 years ago [README] Update contact information 2 years ago
build.gradle Merge branch '4.4' 2 years ago
repl Bump Ammonite REPL to 1.3.2 4 years ago
settings.gradle Merge branch '4.4' 2 years ago
version Smack 4.4.0 2 years ago


Build Status Coverage Status Project Stats Link to XMPP chat


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


Most of Smack is governed by the Apache License 2.0 (SPDX License Identifier: Apache 2.0). This license requires that the contents of a NOICE text file are shown "…within a display generated by the Derivative Works, if and wherever such third-party notices normally appear.".

Smack comes which such a NOTICE file. Moreover, since smack-core is licensed under the Apache License 2.0, the conditions apply to every project using Smack. The content of Smack's NOTICE file can conveniently be retrieved using Smack.getNoticeStream().

Some subprojects of Smack are governed by other licenses. Please refer to the individual subprojects.

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 You may use this link to join the room via 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.