EyeLink Developers Kit Release History

[Sam]

EyeLink Developers Kit / API v2.2.596
Released July 15th 2026

• Added support for Windows 10 and 11, macOS 10.12 to 26, and Ubuntu 22.04, 24.04, and 26.04
  
• Updated installation and upgrade instructions for Linux
  
• Added EyeLink 3 support - camera graphics, calibration, EDF and eye video file (EVF) transfer
  
• Added new functions and data structures to support EyeLink 3 data recording and online data access
  
• Added new conversion options and bug fixes for EDF2ASC, including support for processing EyeLink 3 files
  
• Added pylink support for Python 3.13 and 3.14
  
• Added a 64-bit extension for NBS Presentation
  
• Added an EyeLink backup utility to back up files from the Host PC
  
• Revamped Track.exe (added EyeLink 3 support and enabled execution without requiring admin privileges)
  
• Reorganized examples and provided README files
  
• Updated examples for PsychoPy, OpenSesame, Pygame, and C#
  
• Added long message support in recording and conversion
  
• Implemented other general bug fixes, example improvements, and documentation updates
  

EyeLink Developers Kit / API v2.1.1197
Released October 1st, 2024

• PyLink is now hosted on htps://pypi.org)
  
• Added Support for Python 3.12
  
• Updated Pylink installation instructions in "Getting started with Python and Pylink.pdf"
  
• Updated the Psychopy Builder and Coder examples for Psychopy 2024. Please check "Getting Started with PsychoPy / EyeLink Integration" for the updated instructions and files.
  
• Added support for OpenSesame 4 and updated examples. Please check "Getting Started with OpenSesame" for the updated instructions and files.
  
• Updated the Matlab/Psychtoolbox examples. Please check "Getting Started with Psychtoolbox (Matlab and Octave)" for the updated instructions and files.
  
• Fixed Track.exe launch issue on some Windows PCs
  
• Fixed the velocity calculation in EDFMEX
  
• Fixed EDF2ASC temporal inconsistency issue on macOS
  
• Other minor bug fixes of running SDL examples on macOS
  

EyeLink Developers Kit / API v2.1.762
Released July 24th, 2023

• Provided general API improvements and bug fixes
  

EyeLink Developers Kit / API v2.1.1
Released June 27th, 2021

General API Improvements for Windows, macOS and Linux

• Provided general API improvements and bug fixes
  
• The new API now optimized for low CPU usage
  
• Added new functions to support bulk collection of samples and events
  
• Added support for sample/event availability notifier
  
• Provided updated the EyeLink Programmers’ Guide and User Manuals
  
• Added SDL2 support on Windows, macOS, and Linux
  
• General Bug fixes and Data Viewer integration improvements for the examples supplied
  
• Provided PyLink 2.7, 3.6, 3.7, 3.8, and 3.9 libraries for Windows, macOS and Linux
  
• PyLink libraries can be installed through install_pylink.py script, pip installation through PyPi server or wheels files
  
• Updated the PyLink examples provided (linkSample, linkEvent, and Pygame)
  
• Pygame examples now compatible with Pygame 2.0 on Windows, macOS and Linux (window mode on Linux)
  
• Add Psychopy and OpenSesame examples
  
• Provided Getting Started with Python and Pylink.pdf; updated pylink.chm, and pylink api user guide.pdf
  
• General improvements and bug fixes for EyeLinkToolbox
  
• Provided mex file for Windows, macOS. and Linux (Matlab and Octave)
  
• Provided updated MATLAB/Psychtoolbox examples to Windows, macOS and Linux
  
• Provided Psychtoolbox installer SetupSREyelinkToolbox.m script for EyelinkToolbox
  
• Updated the EyeLinkToolbox Documentation (EyeLinkToolbox-Documentation.html)
  
• Provided support for calibration target presentation with linear interpolation in position
  
• Results folder of sample experiments now includes both EDF file and resource integration
  

Windows

• General bug fixes and improvements for Windows Display API (both 32-bit and 64-bit Windows 7 and 10)
  
• Fixed Start Menu organization on Windows
  
• Windows srversion now indicates the 32-bit version and 64-bit version separately
  
• Provided Visual Studio 2015 project files for all examples (C#, GDI, SDL, and SDL2)
  
• provided a standalone edf_reparser.exe application
  
• provided a standalone getfile application
  
• Added ffdshow video codec to the 3rdparty folder
  
• Provided updated PresLink examples for NBS/Presentation integration
  
• Added PresLink getting started guide to the examples
  
• Provided updated E-Prime examples that are compatible with E-Prime 2 and 3 and documentation
  
• Windows PyLink no longer comes with EyeLink .dll files. Users need to install the EyeLink Display Software to use PyLink
  
• Provided updated Labview example
  
• Improved integration with Translog II
  
• Provided Getting Started with Translog II PDF
  
• Optimized COM interface for C# integration and performance
  
• Provided side-by-side COM support
  
• Added EyeLink broadcast support for the COM interface
  
• Added Animation calibration support for E-Prime (using GDICal COM interface)
  

macOS

• General improvements and bug fixes for macOS API support (compatible with macOS 10.9 to 10.15 and macOS 11)
  
• Updated the Xcode project for macOS
  
• Provided command-line edf2asc (installed a copy of the edf2asc to /usr/local/bin)
  
• Provided an updated GUI-based EDF2ASC converter tool
  
• Provided track example for macOS
  
• General improvements to the installer
  
• Provided uninstaller on macOS
  
• 32-bit platform no longer supported
  
• All the libraries, frameworks, and examples are code signed and notarized
  

Linux

• General bug fixes and improvements for Linux Display API (extensively tested on Ubuntu 18.04 and 20.04)
  
• General improvements for post-installation feedback for the Linux installer
  
• The EyeLink Core, Core Graphics, and EDF Access API libraries are now installed at /usr/lib/x86_64-linux-gnu/ and header files at /usr/include/EyeLink/
  
• EyeLink sample C (SDL and SDL2), PyLink, and Matlab experiments are installed at /usr/share/EyeLink/SampleExperiments/
  
• Documents and user manuals, EDF Access API, and Data Viewer examples are now installed at /usr/share/EyeLink/
  
• Provided track example for Linux installed in /usr/bin/
  
• Provided EyeLink Data Viewer 4.2 (need to install eyelink-dataviewer package separately)