Wiggleback

I didn't review this one for the concept: events which occurred on this day in years past. Even though the information is really very comprehensive, and there are ways to filter the data and combine filters to drill down to the type of event you're seeking. It's an old, old idea in itself, and these days, there's Google.

I didn't review this one for the design, which is pedestrian, though it fits the concept, and it's fast. It also doesn't fit on a 1024 x 768 screen, which I have, so boo.

No, I reviewed it because it has absolutely the greatest domain name I've seen for ages.

But I liked it, anyway, and I can see it being a very useful resource for general school and educational research, drawing as it does from Freebase and Wikipedia and collating data in one place at high speed. The filtering options are a bonus for the casual surfer, just for the fun of playing with the results, and a must for anyone drilling down through all this information.

It's all licensed under Creative Commons, too, so you can share and adapt the information as long as you give a credit for it. Hopefully at least a few users will remember that last part.

Good for serious research, and as time-killers go, a better way to waste your coffee break than most.