Yes. Widgipedia is the only service that stores for free your widgets, web or desktop. When people install your widgets on their web pages, the widgets are served from the Widgipedia serers. This way, you don't have to worry about hosting and managing your widgets yourself.

In case you are forced to use a widget that is hosted on an external site, there is a simple workaround to showcase it with Widgipedia, as described in more detail here.