The MRC-Wellcome Trust Human Developmental Biology Resource (HDBR): http://www.hdbr.org/
Edinburgh Mouse Atlas and Gene Expression Database: http://www.emouseatlas.org/
Digital Embryology Consortium: https://human-embryology.org/wiki/Main_Page
NIH Neuroscience Research: http://neuroscienceblueprint.nih.gov/index.htm
The Allen Brain Atlas: http://www.brain-map.org/
The Virtual Embryo: http://www.ucalgary.ca/UofC/eduweb/virtualembryo/
The Human Developmental Anatomy Centre: http://www.medicalmuseum.mil/index.cfm?p=collections.hdac.anatomy.index
The Visible Embryo: http://www.visembryo.com/baby/index.html
National Center for Microscopy and Imaging Research:
http://ncmir.ucsd.edu/
The Virtual Human Embryo: http://www.ehd.org/virtual-human-embryo/about.php
The Virtual Human Embryo - Heirloom Collection: http://virtualhumanembryo.lsuhsc.edu/
GXD: http://www.informatics.jax.org/mgihome/GXD/aboutGXD.shtml
Visible Human: http://www.nlm.nih.gov/research/visible/visible_human.html
Multi Dimensional Human Embryo: http://embryo.soad.umich.edu/carnStages/carnStages.html
UNSW Embryology: http://embryology.med.unsw.edu.au/
Kathy Sulik's Pages: http://www.med.unc.edu/embryo_images/unit-welcome/welcome_htms/contents.htm
Brainmaps.org (Rhesus Brain Atlases): http://brainmaps.org