| Module name | Description | Status |
| | | |
| AAA_RADIUS | RADIUS backend for the AAA API | beta |
| ACC | Accounting module | stable |
| ALIAS_DB | Database SIP aliases module | stable |
| AUTH | Authentication Framework module | stable |
| AUTH_AAA | AAA-backend authentication module | stable |
| AUTH_DB | Database-backend authentication module | stable |
| AUTH_DIAMETER | DIAMETER-backend authentication module | unmaintained |
| AVPOPS | AVP operation module | stable |
| BENCHMARK | Config file benchmarking | beta |
| B2B_ENTITIES | Back-to-Back User Agent Entities | beta |
| B2B_LOGIC | Back-to-Back User Agent Logic | beta |
| CALL CONTROL | PrePaid application module | beta |
| CARRIERROUTE | routing extension suitable for carriers | alpha |
| CFGUTILS | Different config utilities | stable |
| CLOSEDDIAL | PBX-like dialling features | alpha |
| CPL-C | CPL interpreter module | stable |
| DB_BERKELEY | Berkeley DB driver for DB API | beta |
| DB_FLATSTORE | Fast writing-only text-backend for database module | stable |
| DB_HTTP | HTTP-backend for DB API | alpha |
| DB_MYSQL | MYSQL-backend for database API module | stable |
| DB_ORACLE | ORACLE-backend for database API module | alpha |
| DB_POSTGRES | POSTGRES-backend for database API module | stable |
| DB_TEXT | Text-backend for database API module | stable |
| DB_UNIXODBC | unixODBC driver module | stable |
| DB_VIRTUAL | Middle-layer DB mixer | alpha |
| DIALOG | Dialog support module | stable |
| DIALPLAN | Dialplan management | stable |
| DISPATCHER | Dispatcher module | stable |
| DIVERSION | Diversion header insertion module | stable |
| DOMAIN | Multi-domain support module | stable |
| DOMAINPOLICY | Policies to connect federations | beta |
| DROUTING | Dynamic Routing / LCR | stable |
| ENUM | ENUM lookup module | stable |
| EXEC | External exec module | stable |
| GFLAGS | Global shared flags module | stable |
| GROUP | User-groups module with DB-backend | stable |
| H350 | H350 implementation | stable |
| IDENTITY | SIP Identity implementation | alpha |
| IMC | Instant Messaging Conferencing module | beta |
| JABBER | JABBER IM and PRESENCE interconnection module | beta |
| JSON | JSON packing function | alpha |
| LCR | Least Cost Routing module | stable |
| LDAP | LDAP connector | stable |
| LOAD_BALANCER | Load Balancer (for calls) module | alpha |
| LOCALCACHE | Local memory caching module | beta |
| MANGLER | SIP mangler module | stable |
| MAXFWD | Max-Forward processor module | stable |
| MEMCACHED | MEMCACHED connector module | beta |
| MI_DATAGRAM | DATAGRAM (unix and network) support for Management Interface | stable |
| MI_FIFO | FIFO support for Management Interface | stable |
| MI_XMLRPC | XMLRPC support for Management Interface | stable |
| MEDIAPROXY | NAT traversal module | stable |
| MMGEOIP | MaxMind GeoIP module | beta |
| MSILO | SIP message silo module | stable |
| NAT_TRAVERSAL | NAT traversal module | beta |
| NATHELPER | NAT traversal helper module | stable |
| OPTIONS | OPTIONS server replier module | stable |
| OSP | OSP peering module | stable |
| PATH | Path support for SIP frontending | stable |
| PDT | Prefix-to-Domain translator module | stable |
| PEERING | Radius peering module | alpha |
| PERL | embed execution of Perl function | stable |
| PERLVDB | Perl Virtual Database engine | stable |
| PERMISSIONS | Permissions control module | stable |
| PIKE | Flood detector module | stable |
| PRESENCE | Presence server module - common API | stable |
| PRESENCE_DIALOGINFO | Extension to Presence server for Dialog Info | alpha |
| PRESENCE_MWI | Extension to Presence server for Message Waiting Indication | stable |
| PRESENCE_XCAPDIFF | Extension to Presence server for XCAP-DIFF event | alpha |
| PRESENCE_XML | Presence server module - presence & watcher info and XCAP | stable |
| PUA | Common API for presence user agent client | stable |
| PUA_BLA | BLA extension for PUA | stable |
| PUA_DIALOGINFO | Dialog-Info extension for PUA | alpha |
| PUA_MI | MI extension for PUA | stable |
| PUA_USRLOC | USRLOC extension for PUA | stable |
| PUA_XMPP | XMPP extension for PUA (SIMPLE-XMPP presence gateway) | stable |
| QOS | QOS (RTP) module | alpha |
| RATELIMIT | SIP traffic shaping module | alpha |
| REGEX | RegExp via PCRE library | alpha |
| REGISTRAR | SIP Registrar implementation module | stable |
| RLS | Resource List Server implementation | beta |
| RR | Record-Route and Route module | stable |
| SEAS | Sip Express Application Server (interface module) | stable |
| SIGNALING | SIP signaling module | beta |
| SIPTRACE | SipTrace module | stable |
| SL | Stateless replier module | stable |
| SMS | SIP-to-SMS IM gateway module | stable |
| SNMPStats | SNMP interface for statistics module | stable |
| SPEEDDIAL | Per-user speed-dial controller module | stable |
| STATISTICS | Script statistics support | stable |
| SST | SIP Session Timer support | stable |
| STUN | Built-in STUN server | alpha |
| TEXTOPS | Text operations module | stable |
| TLSOPS | TLS operations module | stable |
| TM | Transaction (stateful) module | stable |
| UAC | UAC functionalies (FROM mangling and UAC auth) | stable |
| UAC_REDIRECT | UAC redirection functionality | stable |
| URI | Generic URI operation module | stable |
| USERBLACKLIST | User black/white listing | alpha |
| USRLOC | User location implementation module | stable |
| XCAP_CLIENT | XCAP client implementation | beta |
| XLOG | Advanced logger module | merged into core |
| XMPP | SIP-to-XMPP Gateway (SIP to Jabber/Google Talk) | stable |
