The Seforim blog just publish their list of sources including blogs
https://seforimblog.com/?lctg=77901787
Blogs
Blogs are generally not formally peer-reviewed and are generally written more informally and conversationally, but are often a great resource. With the shift from blogs to social media, many blogs have shifted to Facebook, and to a lesser extent Twitter and Reddit. (E.g., Mississippi Fred McDowel no longer posts on “On the Main Line”, but does on Facebook..) Blogs are far less active than they were. There are a lot of Facebook groups, which I’m less familiar with, and technically have to be added to and aren’t indexed by Google unfortunately (“walled gardens“, vs. “open platforms”).
- The Seforim Blog
- The Talmud Blog. Focuses on Talmud.
- Rationalist Judaism. Focuses on relationship of science and Judaism, besides for contemporary politics and hashkafa.
- Kavvanah.blog- The Book of Doctrines and Opinions
- Jewish Studies @ CUL . A blog affiliated with Columbia University, focused on Hebrew Bibliography.
- Footprints Blog – Tracing Jewish Books Through Time and Place . A blog affiliated with Columbia University, focused on Hebrew Bibliography.
- Safranim .
- Am Hasefer (עם הספר). The blog of Rambam Library of Tel Aviv, focused on Hebrew Bibliography.
- Hagahot. Active 2005 – 2013.
- Giluy Milta B’alma (גילוי מילתא בעלמא). Masthead: “We present here new and interesting findings in Hebrew Manuscripts, and Genizah- We welcome posts in Hebrew or English.”
- On the Main Line. Blog of “Shimon Steinmetz/ Mississippi Fred MacDowell”.
- English Hebraica . Another blog of “Mississippi Fred MacDowell”. Masthead: “Chronicling Jewish and Jewish themed writing in the English language prior to the 19th century. interesting biographies, diagrams, translations, transliterations and descriptions of Jewish learning and theology from primary sources.” Active 2006 – 2007. Since then posts on Facebook and Twitter.
- What’s Bothering Artscroll? . Another blog of “Mississippi Fred MacDowell”. Active 2006 – 2008.
- Hollander Books Blog. Masthead: “A bookseller and his books, his very many books. And a few ideas.”
- Kol Safran. Masthead: “A librarian’s comments on books, copyright, management, librarianship, and libraries that don’t get the full article treatment.” Many posts on topics in Jewish bibliography, as well as visits to Jewish libraries.
- Musings of a Jewish Bookseller. Masthead: “On Jewish Books, Jewish Bookselling and Jewish Booksellers”
- Notrikon (נוטריקון). In Modern Hebrew. Masthead: ”A journey through the space of the written word, between books, periods and people … stops at different stations, who knows where we will end up.”
- Oneg Shabbat (עונג שבת). Blog of Prof. David Assaf. Many interesting posts on modern Jewish history, and on history of Hasidut.
- HaSafranim – Blog of Israel National Library (הספרנים – בלוג הספרייה הלאומית). In Modern Hebrew. Focuses on Hebrew bibliography, and topics related to Modern Israel.
- 7minim (מינים). Masthead: “This blog is intended to allow me, Tomer Persico, to comment briefly on this and that”. Has a number of posts on recent scholarly books on history of Kabbalah (though the blog mostly focuses on contemporary issues).
- HaZirah HaLeshonit – Ruvik Rozental (הזירה הלשונית – רוביק רוזנטל). Many posts on history of individual Hebew words, by a well-known and popular Hebrew linguist.
- Leshoniada (לשוניאדה). In Modern Hebrew. Focuses on Hebrew linguistics.
- Safa Ivrit (השפה העברית). In Modern Hebrew. Focuses on Hebrew linguistics. Not quite a blog, rather a wide range of short articles on sources of sayings and words.