OTP R16B03 has been released!

R16B03 Readme File

R16B03 Source File (63.1 MB)

R16B03 Windows 32-bit Binary File (90.6 MB)

R16B03 Windows 64-bit Binary File (91.8 MB)

R16B03 HTML Documentation File (31.7 MB)

R16B03 Man Pages File (1.2 MB)


  • A new memory allocation feature called "super carrier" has been introduced. It can for example be used for pre-allocation of all memory that the runtime system should be able to use. It is enabled by passing the +MMscs (size in MB) command line argument. For more information see the documentation of the +MMsco, +MMscrfsd, +MMscrpm, +MMscs, +MMusac, and, +Mlpm command line arguments in the erts_alloc(3) documentation.
  • The ldap client eldap now supports the start_tls operation. This upgrades an existing tcp connection to encryption using tls, see eldap:start_tls/2 and /3.
  • The ftp client (inets application) now supports ftp over tls (ftps).
  • Approximately 50 user contributions. Many thanks for that!

Additional Packages

Erlang/OTP is also distributed in pre built packages courtesy of Erlang Solutions.
There are pre built packages for platforms such as: Raspbian, Ubuntu, Fedora, OS X, and more!.
Erlang Solutions Downloads page


From OTP 18 and above, Erlang/OTP is distributed under Apache License 2.0. The previous versions are distributed under the Erlang Public License (EPL) that is a derivative work of the Mozilla Public License (MPL). It contains terms which differ from MPL, mainly in terms of jurisdiction. The license is constructed in accordance with the laws of Sweden.

To help you understand the legal text there is an EPL Translation. The legal text is the license, so if you have any doubts, refer to the legal text.

Available releases

PDF files are included in the Windows installer and in the HTML documentation tarballs, starting with the R13B03 release.

There is a file containing MD5 checksums for all files in the download directory, also reachable through rsync

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