The author said he was inspired by my Qassam calendar (thanks!) but, unlike my static monthly calendars, PTWatch is a full database where you can query any date or date range. It includes mortars as well. For each attack he includes a link back to the (usually Arab) news source that documents it, far more effectively than my calendars do - I pretty much gave up on linking back to every attack every day and only link to the most "representative" article I can find.
Check it out!
