| compiler 8.2.1 | A byte code compiler for Erlang which produces highly compact code | 
| erts 13.1.2 | Functionality necessary to run the Erlang System itself | 
| kernel 8.5.1 | Functionality necessary to run the Erlang System itself | 
| sasl 4.2 | The System Architecture Support Libraries is a set of tools for release upgrades and alarm handling etc. | 
| stdlib 4.1.1 | The Erlang standard libraries | 
| mnesia 4.21.2 | A heavy-duty real-time distributed database | 
| odbc 2.14 | An interface to relational SQL-databases built on ODBC (Open Database Connectivity). | 
| os_mon 2.7.1 | A monitor which allows inspection of the underlying operating system | 
| snmp 5.13.1 | Simple Network Management Protocol (SNMP) support including a MIB compiler and tools for creating SNMP agents | 
| asn1 5.0.21 | Provides support for Abstract Syntax Notation One | 
| crypto 5.1.2 | Cryptographical support | 
| diameter 2.2.7 | Diameter | 
| eldap 1.2.10 | eldap - Erlang LDAP library | 
| erl_interface 5.3 | Low level interface to C | 
| ftp 1.1.1 | FTP client | 
| inets 8.1 | A set of services such as a Web server etc. | 
| jinterface 1.13.1 | Low level interface to Java | 
| megaco 4.4.1 | Megaco/H.248 is a protocol for control of elements in a physically decomposed multimedia gateway, enabling separation of call control from media conversion. | 
| public_key 1.13.1 | API to public key infrastructure. | 
| ssh 4.15 | Secure Shell application with sftp and ssh support | 
| ssl 10.8.5 | ssl- Secure Socket Layer. | 
| tftp 1.0.3 | TFTP application | 
| wx 2.2 | A Graphics System used to write platform independent user interfaces | 
| xmerl 1.3.30 | Provides support for XML 1.0 | 
| debugger 5.3 | A debugger for debugging and testing of Erlang programs | 
| dialyzer 5.0.3 | The DIALYZER, a DIscrepancy AnaLYZer for ERlang programs. | 
| et 1.6.5 | Event Tracer (ET), uses the built-in trace mechanism in Erlang and provides tools for collection and graphical viewing of trace data. | 
| observer 2.13 | Observer, tools for tracing and investigation of distributed systems | 
| parsetools 2.4.1 | A set of parsing and lexical analysis tools | 
| reltool 0.9 | Reltool is a release management tool. It analyses a given Erlang/OTP installation and determines various dependencies between applications. The graphical frontend depicts the dependencies and enables interactive customization of a target system. The backend provides a batch interface for generation of customized target systems. | 
| runtime_tools 1.19 | Runtime tools, tools to include in a production system | 
| syntax_tools 3.0 | A utility used to handle abstract Erlang syntax trees, reading source files differently, pretty-printing syntax trees. | 
| tools 3.5.3 | A set of programming tools including a coverage analyzer etc | 
| common_test 1.23.1 | A portable framework for automatic testing | 
| eunit 2.8.1 | Support for unit testing. | 
| edoc 1.2 | A utility used to generate documentation out of tags in source files. | 
| erl_docgen 1.4 | A utility used to produce the OTP documentation. |