Thanks to you both, Cyril and Esteban! On 23 Jan 2019, at 14:22, Cyril Ferlicot <cyril.ferlicot@gmail.com> wrote: You can use JQuery with ajax to refresh part of the page. You can check for example this component in MDL that is working with ajax: https://mdl.ferlicot.fr/mdl/Widgets/DatePicker Nice demo! Ok, so it is possible but seems to be more low-level than what Iliad does - there every WAComponent is re-rendered in the client by the framework when marked dirty. Good to see the alternative! On 23 Jan 2019, at 14.28, Esteban Lorenzano <estebanlm@gmail.com> wrote: There is also Willow (a framework on top of Seaside): https://github.com/ba-st/Willow Thanks, this looks interesting. I'll have to consider if it does what I need and if the fact that it is based on Seaside means that there is good community support. On 23 Jan 2019, at 14:22, Cyril Ferlicot <cyril.ferlicot@gmail.com> wrote: We talked with Johan not long ago about clean URLs. It's possible to have them by storing the fields in cookies, but it mean that you can only have one session by browser. But this is what everyone else I know does, including Iliad. Try to log into Facebook or Gmail and open a new tab, you will be logged in to your session. To get a new session people open a private browser tab. And if users copy the URL and share it with someone else, they wouldn't want to give away their session ID. Or am I missing something? As I said, I don't know Seaside and my be misunderstanding why it does things the way it does. best, Siemen