University of Calgary
Univ. Of Calgary: Mishnah
A great site! Provides a page from the Mishnah with explanation of various parts. Also discusses terminology, authorship, and significant dates.
University of Calgary
University of Calgary: Mishnah
This resource thoroughly describes what the Mishna is, including the historical aspect and how it's organized. There's also a section which tells the difference between Mishnah and Midrash.
Other
Chaver: The Mishnah
This research site from Chaver.com describes the Mishnah in-depth: "The Art of Writing the Oral Tradition," "The Decalog as Wisdom Literature," and "Woven Texts: Literary Form in Ancient Hebrew Legal Codes."
Mb Soft
Believe: Mishnah
This site provides general information on the Mishnah, including its organization and contents.