OTP 17.1 has been released!

OTP 17.1 Readme File

OTP 17.1 Source File (95126190)

OTP 17.1 Windows 32-bit Binary File (95126190)

OTP 17.1 Windows 64-bit Binary File (96319608)

OTP 17.1 HTML Documentation File (33412455)

OTP 17.1 Man Pages File (1354653)

Erlang/OTP 17.1 is a service release on the 17 track with mostly bug fixes, but is does contain a number of new features and characteristics improvements as well.

Some highlights of the release are:

  • crypto: Add aes_cfb8 cypher to crypto:block_encrypt and block_decrypt.
  • diameter: Add result code counters for CEA, DWA, and DPA.
  • erts: The following built in functions in the erlang and binary modules now bump an appropriate amount
    of reductions and yield when out of reductions:
    binary_to_list/1, binary_to_list/3, bitstring_to_list/1, list_to_binary/1,
    iolist_to_binary/1, list_to_bitstring/1, binary:list_to_bin/1
  • hipe: Handle Maps instructions get_map_elements, put_map_assoc,
    put_map_exact in the HiPE native code compiler.
  • mnesia: The time for inserting locks for a transaction with large
    number of locks is reduced significantly.
  • ssh: Option max_sessions added to ssh:daemon/{2,3}.
  • stdlib: Add maps:get/3 to maps module. The function will return the
    supplied default value if the key does not exist in the map.

Many thanks to 24 different contributors in this release

You can find more detailed info in the README.

Compiling Erlang from source

You can build Erlang from source on your own, following the building and installation instructions. Or use the Kerl script. Kerl is a script that lets you easily build Erlang with a few commands. Follow the instructions to build.

Finding a source version

Follow this link that presents all released source versions, a link to the GitHub source tag, and to the README.

Pre-built Binary Packages

Most OS package managers provide pre-built binary packages. You can also download the latest stable releases from Erlang Solutions. Erlang Solutions provides pre-built binary packages for OS X, Windows, Ubuntu, Debian, Fedora, CentOS, Raspbian and other operating systems. 

  • For Homebrew on OS X: brew install erlang
  • For MacPorts on OS X: port install erlang
  • For Ubuntu and Debianapt-get install erlang
  • For Fedorayum install erlang
  • For FreeBSDpkg install erlang


Since OTP 18.0, Erlang/OTP is released under Apache License 2.0. The older releases prior to 18.0 were released under Erlang Public License (EPL), a derivative work of the Mozilla Public License (MPL).