This is R16B01, the first maintenance release for the R16B major release. Erlang/OTP R16B01 has been released! See the Readme file and the Documentation for more details.

R16B01 Readme File

R16B01 Source File (62.7 MB)

R16B01 Windows 32-bit Binary File (90.2 MB)

R16B01 Windows 64-bit Binary File (91.3 MB)

R16B01 HTML Documentation File (31.5 MB)

R16B01 Man Pages File (1.2 MB)


  • Migration of memory carriers between allocator instances, when enabled it will result in reduced memory footprint when the memory load is unevenly distributed between scheduler specific allocator instances.
  • Interruptible term_to_binary, (thanks to Erik Stenman)
  • Added the +sfwi <interval> Scheduler Forced Wakeup Interval
  • All crypto functions except the block chipers will now chunk large input into several calls to avoid blocking the scheduler for too long.
  • Elliptic curve support in crypto, ssl and ssh(thanks to Andreas Schultz)  
  • Lift static limitation (FD_SETSIZE) for file descriptors on Mac OS X. (thanks to Anthony Ramine)
  • Removed a lock around GC statistics counter
  • Many small improvements and in Diameter
  • 60 user contributions

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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