Open-source servers today discusses a number of interesting web app platforms.

I use Apache and Tomcat at work. Java is my company's platform of choice, and we are doing a lot of servlet stuff. Seems to work beautifully. Small footprint too - WebSphere is a monster.

JBoss and Enhydra I will look at further - I'm just reading up on J2EE now. (Java for the Web with Servlets, JSP, and EJB. Good. A big book, but that's 'cos it covers a lot.)

I have mentioned Zope before.

(Via Daily Python URL)