Wow, the Form Builder is awesome!! Check out that control Telerik Guys! That one is a winner.

http://alloyui.com/examples/form-builder/

Add a TagCloud control too ;-)

I searched for possible solutions to add the missing controls we need in our project before posting here. Just dropping in bootstrap files into a Kendo UI Web project (business web app, not site),  seems to change visually lots of things (in an inconsistent manner IMO). This seems to be Bootstrap's fault since it acts "globally". However the ThemeBuilder doesn't seem to help here since it's not considering the bootstrap part.

It's however not just about the "glitches", but as I mentioned earlier, the fact the Kendo UI is simply missing important widgets/functionality required for business applications, and Twitter Bootstrap seems to provide some (as a poor mans workaround):

# Layout Managers
How others do it: http://docs.sencha.com/extjs/4.2.1/extjs-build/examples/layout-browser/layout-browser.html?theme=gray
Bootstrap Workaround:http://getbootstrap.com/2.3.2/scaffolding.html

# Button Dropdowns
How others do it:  http://try.sencha.com/extjs/4.1.0/docs/Ext.button.Split.1/
   http://docs-origin.sencha.com/extjs/4.2.1/#!/api/Ext.button.Split
Bootstrap Workaround: http://getbootstrap.com/2.3.2/components.html#buttonDropdowns

# Icons
Bootstrap Workaround: http://getbootstrap.com/2.3.2/base-css.html#icons
Also: http://fortawesome.github.io/Font-Awesome/

The above are just a few I've encountered evaluating Kendo UI Web as an upgrade alternative for a existing (but small) business web application. IMO the best/simplest solution for start would be the Theme Builder to include the Twitter Bootstrap components as an option.

> Please have a look at this non-commercial

Please have a look at commercial frameworks (since Kendo UI is one, and those have even more controls)  http://docs-origin.sencha.com/extjs/4.2.1/#!/example

I was trying to use kendoUI together twitter bootstrap, but there seems to bee just too many rendering glitches and problems :(

The main problems seems to arise from the fact that the number of available kendoUI components is quite small compared to e.g. Sencha ExtJS, so Twitter Bootstrap et. co. seems to supply quite allot of this missing stuff, but than it breaks the existing ones :(.

This is something that we all would like to have.
Kendo UI needs some more controls. I understand that You can't do every possible requested widget, but there are many that are requested often.
I personally would like to have Sortable Layout, Progress Bar and basic controls like text area, input, check box, radio. Many times we search for framework that have those elements styled in the same way as rest of controls.

KendoUI is really nice, but please add more controls to it. Open Source frameworks are adding controls more often that big company like Telerik to their commercial (and Open Source) product.

P.S. Mike thanks for sharing this link - wonderful framework.