The Run-Time System
ERTS 5.2.3.3	The Erlang Run-Time System
Basic Applications
KERNEL 2.8.1.1	Functionality necessary to run the Erlang System itself
STDLIB 1.11.4.1	The Erlang standard libraries
SASL 1.9.4	The System Architecture Support Libraries is a set of tools for release upgrades and alarm handling etc.
COMPILER 4.1.1	A byte code compiler for Erlang which produces highly compact code
Database Applications
MNESIA 4.1.3	A heavy duty real-time distributed database
ODBC 1.0.5	An interface to relational SQL-databases built on ODBC (Open Database Connectivity).
MNESIA_SESSION 1.1.5	A foreign language interface to Mnesia DBMS
MNEMOSYNE 1.2.5	Query language support for Mnesia DBMS
Operation & Maintenance Applications
SNMP 3.3.8	Simple Network Management Protocol (SNMP) support including a MIB compiler and tools for creating SNMP agents
OS_MON 1.6.0.2	A monitor which allows inspection of the underlying operating system
EVA 2.0.3	A multi-featured event and alarm handler
Object Request Broker & IDL Applications
IC 4.2	IDL compiler
ORBER 3.4	A CORBA Object Request Broker
COSTRANSACTIONS 1.2	Orber OMG Transaction Service
COSTIME 1.1	Orber OMG Timer and TimerEvent Services
COSPROPERTY 1.1	Orber OMG Property Service
COSNOTIFICATION 1.1	Orber OMG Notification Service
COSFILETRANSFER 1.1	Orber OMG File Transfer Service
COSEVENTDOMAIN 1.1	Orber OMG Event Domain Service
COSEVENT 2.1	Orber OMG Event Service
Interface and Communication Applications
ERL_INTERFACE 3.3.2	Low level interface to C
SSL 2.3.5	An interface to UNIX BSD sockets with Secure Sockets Layer
MEGACO 1.1.2	Megaco/H.248 is a protocol for control of elements in a physically decomposed multimedia gateway, enabling separation of call control from media conversion.
JINTERFACE 1.2.1.1	Low level interface to Java
INETS 3.0.3	A set of services such as a Web server and a ftp client etc.
GS 1.5.1	A Graphics System used to write platform independent user interfaces
CRYPTO 1.1.2.1	Cryptographical support
ASN1 1.4.1	Provides support for Abstract Syntax Notation One
Tool Applications
TOOLS 2.2	A set of programming tools including a coverage analyzer etc
WEBTOOL 0.7.1	A tool that simplifying the use of web based Erlang tools
TV 2.0.4	An ETS and MNESIA graphical table visualizer
TOOLBAR 1.1.0	A tool bar simplifying access to the Erlang tools
RUNTIME_TOOLS 1.3	Runtime tools, tools to include in a production system
PMAN 2.4.1	A process manager used to inspect the state of an Erlang system
PARSETOOLS 1.2	A set of parsing and lexical analysis tools
OBSERVER 0.9.3	Observer, tools for tracing and investigation of distributed systems
ET 1.0	Event Tracer (ET), uses the built-in trace mechanism in Erlang and provides tools for collection and graphical viewing of trace data.
DEBUGGER 2.1	A debugger for debugging and testing of Erlang programs
APPMON 2.1.1	A utility used to supervise Applications executing on several Erlang nodes