OTP 24.1 has been released

OTP 24.1 Readme File

OTP 24.1 Source File (248)

OTP 24.1 Windows 32-bit Binary File (248)

OTP 24.1 Windows 64-bit Binary File (248)

OTP 24.1 HTML Documentation File (248)

OTP 24.1 Man Pages File (248)

Erlang/OTP 24.1 is the first maintenance patch release for OTP 24, with mostly
bug fixes as well as a few improvements.

Below are some highlights of the release:


  • OTP: The Efficiency Guide has been extended with a chapter about maps.

  • Stdlib: Most output functions in the io module now print extra
    error information when provided with invalid arguments.
    The functions are: io:format, io:fwrite, io:put_chars,
    io:nl and io:write.

  • Erts: init:stop() no longer unloads loaded code before
    terminating the runtime system. On systems with slow
    CPUs (such as Raspberry PI Zero), that can
    significantly speed up termination of the runtime system.

For more details about new features and potential incompatibilities see

Online documentation can be browsed here:

The Erlang/OTP source can also be found at GitHub on the official Erlang repository,

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.

Source Versions and Windows Binaries for Patches

Information about all released OTP versions since OTP 17.0 can be found at the OTP Versions Tree page. This information includes a link to the GitHub source tag, and a link to the README. As of OTP 23, Windows binaries can also be downloaded from here for all patches.

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).