Jose A. Ortega Ruiz <jao@gnu.org> designed and implemented Geiser and
is its active maintainer. For more boring details about him, see
<http://jao.io>.

Daniel J. Leslie implemented and maintains Geiser's support for
Chicken.

Peter Feigl implemented and maintins Geiser's support for GNU/MIT
Scheme, Chibi and Chez.

Contributors:

Michael Wilber
Diogo F. S. Ramos
Jonas Rodrigues
Ray Racine
Nick Parker
Darren Hoo
Ludovic Courtès
Alex Kost
Mario Rodas
Christoph Egger
Chunyang Xu
Fice T
Syohei Yoshida
Mario Domenech

See also <https://github.com/jaor/geiser/contributors>.