Features

Standards compliant
- Full XMPP RFCs RFC 3920 and RFC 3921 compliance
- Current with RFC 3920bis and RFC 3921bis updates
- Full XEP-0212 XMPP Basic Server 2008 compliance
- XEP-0216 XMPP Intermediate IM Server 2008 compliance
IDNA, Nameprep, Stringprep and Resourceprep support
Modular architecture (flexibility, extensibility, rapid development)
MySQL, PostgreSQL, SQLite, BerkeleyDB, LDAP, PAM, pipe and Anonymous authentication backends
MySQL, PostgreSQL, SQLite, BerkeleyDB, Oracle and Filesystem storage backends
External components support
Virtual hosts (many domains in one server deployment) support
- with dynamic mass-virtual-hosts creation feature
TLS encryption and SASL authentication of client and server connections
Host based ACLs
Packet filter for policy XMPP routing control
Server announce messages
Storing messages offline for later retrieval XEP-0160 with Quota support
Negative priority support
Configurable in-band registration
Out of band registration support
Runs on Linux, *BSD, Solaris and Windows 32
Linux 2.6 epoll and Windows WSAAsyncSelect support for great scalability
XEPs supported
- XEP-0012 Last Activity
- XEP-0016 Privacy Lists
- XEP-0030 Service Discovery
- XEP-0049 Private XML Storage
- XEP-0054 vcard-temp
- XEP-0077 In-Band Registration
- XEP-0079 Advanced Message Processing
- XEP-0092 Software Version
- XEP-0114 Jabber Component Protocol
- XEP-0138 Stream Compression
- XEP-0153 vCard-Based Avatars
- XEP-0157 Contact Addresses for XMPP Services
- XEP-0160 Best Practices for Handling Offline Messages
- XEP-0178 Best Practices for Use of SASL EXTERNAL with Certificates
- XEP-0191 Simple Communications Blocking
- XEP-0192 Proposed Stream Feature Improvements
- XEP-0193 Proposed Resource Binding Improvements
- XEP-0198 Stanza Acknowledgements
- XEP-0199 XMPP Ping
- XEP-0202 Entity Time
- XEP-0203 Delayed Delivery
- XEP-0237 Roster Versioning