One of them was LLOOGG: https://github.com/antirez/lloogg, which used to be at lloogg.com but it seems like the domain was not renewed.

I remember using it on my personal website long before I had even heard of Redis, it was a nice analytics tool for small sites with little traffic.

Segnalo and Oknotizie. Segnalo was similar to delicious, Oknotizie similar to Reddit/Digg. Later in order to create the first service, LLOOGG, I had to write Redis.