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AstroArts Novae and Supernovae
Observable Novae, and Supernovae. Plus a database of all current novae, and supernovae. Includes finding charts for bright objects.
http://www.astroarts.com/
Bright Supernovae
Contains a list of the currently observable supernovae, along with information on their location and reference images.
http://www.ggw.org/asras/snimages/
MOST Supernova Remnant Catalogue
SNR catalogs and images from the University of Sydney.
http://www.physics.usyd.edu.au/astrop/wg96cat/
SAI Supernova Catalog
Sternberg Astronomical Institute - Moscow, Russia.
http://www.sai.msu.su/cgi-bin/wdb-p95/sn/sncat/form
Supernova Remnants (SNRs) Directory
An index to SNR database including radio maps, optical and X-ray images.
http://www.cats.sao.ru/~satr/SNR/snr_map.html