Keset HaSofer: Laws for Scribes
Created by Jen Taylor Friedman, this site provides access to the laws about being a Torah scribe, particularly with regard to the question of whether women can engage in this activity.
Created by the Baal Shem Tov Society, this site provides information and stories about mezuzot, along with detailed information from a sofer about the writing of a mezuzah.
This commercial website of Mordechai Pinchas in the UK provides information about scribal arts including a video guide to writing each letter of the Hebrew alphabet in the form appropriate for a Torah scroll or mezuzah.
This commercial site in English and Hebrew provides videos and information about issues related to tefillin, and the writing of Torah scrolls and mezuzot.