Writing small web services in seaside has been like living in the distant future since something like 2006. JavaScript made a lot of strides towards making seaside less impressive in recent years, but as someone who hates frontend stuff I still vastly prefer it.

Playing with it in 2006 was like using magic. Sure, it is not REST, but whenever I show it off to someone used to handling a lot of stuff client side they still have to pinch themselves :)