Cryptsetup was originally written in 2004 by Jana Saout
LUKS extensions are written in 2006 by Clemens Fruhwirth
Tomb is written and maintained since 2007 by Denis "Jaromil" Roio
Tomb includes code and advices by Anathema, Boyska, Hellekin O. Wolf, Daniel Rodriguez, Parazyd, Alexandre Pujol, AitorATuin, Narrat, Artur Malimonov and Chris Vogel.
The 'gtomb' GUI based on Zenity is written by Parazyd and Daniel Dias Rodrigues.
The Qt5 desktop tray GUI is written by Gianluca Montecchi.
Python Tomb wrappers are contributed by Reiven and Boyska.
The Docker Tomb wrapper is contributed by Greg Tczap and Jens Rischbieth.
Artwork is contributed by Jordi aka Mon Mort and Logan VanCuren.
Gettext internationalization and Spanish translation is contributed by Daniel Rodriguez and Francisco Serrador. French translation by Hellekin and Roy Lockhart, Russian translation by fsLeg and AHOHNMYC, German translation by Jerry Polfer, Italian translation by Massimiliano Augello and Swedish translation by PLJ / Kosovoper, general fixes contributed by Daniel Dias Rodrigues.
Testing, reviews and documentation contributed by Dreamer, Vlax, Shining the Translucent, Mancausoft, Asbesto Molesto, Nignux, TheJH, The Grugq, Reiven, GDrooid, Alphazo, Brian May, fsLeg, Narrat, Jerry Polfer, Jim Turner, Maxime Arthaud, RobertMX, mhogomchungu Mandeep Bhutani, Emil Lundberg, Joel Montes de Oca, Armin Mesbah, Arusekk, Stephan Schindel, Asbjørn Apeland, Victor Calvert, bjonnh, SargoDevel, AitorATuin, Alexis Danizan, Sven Geuer, Greg Tczap, Aaron Janse, Mark Mykkanen, Alexis Danizan, Steve Litt, James R, Matthieu Crapet, Selene ToyKeeper, Valentin Heidelberg and... the Linux Action Show!
Tomb includes an implementation of the "Password-Based Key Derivation Function v2" based on GCrypt and written by Anthony Thyssen, with fixes contributed by AitorATuin.
Some of the Tomb developers can be contacted via GitHub discussions or over Telegram via the Dyne.org Chat Channel.