The following people have contributed to components used in LPub3D:

LPub3D - An LDraw Building Instruction Editor
https://trevorsandy.github.io/lpub3d
Trevor Sandy <trevor.sandy@gmail.com>

Visual Editor (LeoCAD version 21.06 sha 22d4d2c specifically adapted for LPub3D)
https://github.com/trevorsandy/leocad/
Trevor Sandy <trevor.sandy@gmail.com>

LDView-OSMesa-CUI (LDView - LPub3D Edition 4.4.0 "qmake-build" specifically adapted for LPub3D)
https://github.com/trevorsandy/ldview
Trevor Sandy <trevor.sandy@gmail.com>

LDGLite (LDGLite 1.3.4 - specifically adapted for LPub3D)
https://github.com/trevorsandy/ldglite
Trevor Sandy <trevor.sandy@gmail.com>

LPub3D RayTrace-CUI (POV-Ray 3.8.0 "raytracer-cui" specifically adapted for LPub3D)
https://github.com/trevorsandy/povray/
Trevor Sandy <trevor.sandy@gmail.com>

LPub4
https://sourceforge.net/projects/lpub4/
Kevin Clague <kevin.clague@gmail.com>

LeoCAD 21.06 commit 22d4d2c
https://github.com/leozide/leocad
Leonardo Zide <leozide@gmail.com>

LDGlite 1.3.4 commit 00fef0e7
https://github.com/deeice/ldglite
Don Heyse <dheyse@hotmail.com>

LDView 4.4 commit 6d8e2177
https://github.com/tcobbs/ldview
Travis Cobb <ldview@gmail.com>
Peter Bartfai <pbartfai@stardust.hu>

POV-Ray 3.8 commit 588ba80c
https://github.com/POV-Ray/povray
Persistence of Vision Raytracer Pty. Ltd.

Qt-History-LineEdit c6c6992
https://gitlab.com/mattia.basaglia/Qt-History-LineEdit
Mattia Basaglia <mattia.basaglia@gmail.com>

qSLog 2.0.0 b4
https://bitbucket.org/codeimproved/qslog/src/master/
Razvan Petru

QtWaitingSpinner commit bb8f898
https://github.com/snowwlex/QtWaitingSpinner
Alex Turkin 

QuaZip 1.1.0 commit de8125c
https://github.com/stachenov/quazip/commit/de8125cf8cf8422dae5df87ed6b5be9305219594
Sergey A. Tachenov

QSimpleUpdater 2.0 a3e9ef2
https://github.com/alex-spataru/QSimpleUpdater
Alex Spataru

WPngImage 1.4.0
https://github.com/WarpRules/WPngImage
Juha Nieminen

LDraw.ini / ldglite
Lars C. Hassing <SP.lars@AM.hassings.dk>

Linux Open Build Service scripts
Peter Bartfai <pbartfai@stardust.hu>

Other Contributors (in alphabetical order):
Daniele Benedettelli
Jaco van der Molen

Dropbox Uploader script
https://github.com/andreafabrizi/Dropbox-Uploader a3df727
Andrea Fabrizi <andrea.fabrizi@gmail.com>

Dmg fileicon script v0.2.2
https://github.com/mklement0/fileicon 7108132
Michael Klement <mklement0@gmail.com>

Create Dmg
https://github.com/andreyvit/create-dmg fbe0f36c
Andrey Tarantsov, Andrew Janke

Dmg License script
https://github.com/create-dmg/create-dmg/blob/master/support/licenseDMG.py 5eff2ce8
Jared Hobbs <https://bitbucket.org/jaredhobbs/pyhacker>

LEGO LDraw Library content
LDraw.org

LSynth Version 3.1.1 commit 7c8e6fd
https://github.com/deeice/lsynth
Don Heyse <dheyse@hotmail.com>

NsisMultiUser Plugin d5da5cf
https://github.com/trevorsandy/NsisMultiUser
Ricardo Drizin, Alex Mitev

TENTE LDraw Library content
José Alfonso Solera <jasolo.f@gmail.com> [Jasolo]

VEXIQ LDraw Library content
Philippe Hurbain <philo@philohome.com> [Philo]

Snippets, JSON configuration library (adapted from CuteMarkEd)
Christian Loose <christian.loose@hamburg.de>