I don't know about you, but I get a lot of my news from the radio, and sometimes I have trouble keeping track of whether an attack is new or from a few days ago.
Wikipedia has a list. It's not my ideal list, which would include terrorist attack generally, and also have some way of making the number of deaths more conspicuous rather than making all attacks look like they're the same size to a casual glance. There's a surprising gap from January 30 to March 13 of this year. Still, it's a great deal better than not having a list at all.
Maps of worst terrorist attacks (100 or more fatalities)
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