From version 1.5 onwards PsychoPy is distributed under the GNU GPLv3

The PsychoPy *library* includes the following:

    - pyparallel (http://pyserial.sourceforge.net/pyparallel.html). License: Python Software Foundation
    - quest (http://www.visionegg.org/Quest). License: BSD
    - psychopy/app/Resources/DejaVuSerif.ttf. License: BSD-like (see below for full list of terms)
    
The Standalone binary installers include a large number of additional packages, all with compatible licenses included (BSD, MIT, or GPL). These can be found in their respective site-packages directories.

Files: psychopy/app/Resources/DejaVuSerif.ttf
Copyright: 2003 by Bitstream, Inc. All Rights Reserved. Bitstream Vera is
           a trademark of Bitstream, Inc.
License:
    Permission is hereby granted, free of charge, to any person obtaining a copy
    of the fonts accompanying this license ("Fonts") and associated
    documentation files (the "Font Software"), to reproduce and distribute the
    Font Software, including without limitation the rights to use, copy, merge,
    publish, distribute, and/or sell copies of the Font Software, and to permit
    persons to whom the Font Software is furnished to do so, subject to the
    following conditions:

    The above copyright and trademark notices and this permission notice shall
    be included in all copies of one or more of the Font Software typefaces.

    The Font Software may be modified, altered, or added to, and in particular
    the designs of glyphs or characters in the Fonts may be modified and
    additional glyphs or characters may be added to the Fonts, only if the fonts
    are renamed to names not containing either the words "Bitstream" or the word
    "Vera".

    This License becomes null and void to the extent applicable to Fonts or Font
    Software that has been modified and is distributed under the "Bitstream
    Vera" names.

    The Font Software may be sold as part of a larger software package but no
    copy of one or more of the Font Software typefaces may be sold by itself.

    THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
    OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
    TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL BITSTREAM OR THE GNOME
    FOUNDATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING
    ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
    THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE
    FONT SOFTWARE.

    Except as contained in this notice, the names of Gnome, the Gnome
    Foundation, and Bitstream Inc., shall not be used in advertising or
    otherwise to promote the sale, use or other dealings in this Font Software
    without prior written authorization from the Gnome Foundation or Bitstream
    Inc., respectively. For further information, contact: fonts at gnome dot
    org. 
~

