Pencil is a pretty nice open-source GUI prototyping tool. The only little problem for Debian user is, Pencil depends on Firefox and not on Iceweasel. If you want to bypass that problem very easy, you can download pencil as Firefox Extension. But if you want to use Pencil as native application you have to download the deb package and will see, that it depends on Firefox. Iceweasel and Firefox are the same things, but have different names.
Here is a Wikipedia articel about Mozilla Corporation software rebranded by the Debian project.You can run dpkg also with --ignore-depends=firefox, but that isn't a very good solution.
In Lesti_Fpc 1.3.2 I have added the possibility to edit the cacheTags and Parameters via an event. The idea of the Fpc was very clear and simple, but every day I get requests from developers with problems, that aren't that simple. For example oblomovx wanted to Disable Cleaning of Categories after product save. Maybe 98% of all Fpc users didn't need the possibilty to disable this functionality. Or riznmage wanted to Add AJAX parameter to make a differnce between requests that are made by ajax and normal requests. I can understand the need of such a thing, but on the other site I can't implement every crazy idea or I just think that it is wrong to make a ajax request on a action that isn't normally made for it. To let the Fpc simple, but also give those people the possiblity for there workflow I have made it like Magento. I have dispatched some events to work a little bit more advanced with the behavior of the Fpc.