Nothing is free in this life. It would be nice if it was, but alas not.
Running this server costs money. This server not only hosts this website, but is also the main build platform for creating the download files for UECIDE.
Another big cost is that of hardware. The main goal of UECIDE is for it to work on any piece of embedded hardware available. We have very limited resources for getting and testing different hardware with UECIDE.
Just a couple of pounds (or Dollars, Yen, Mongolian tögrög... we're not fussy) can help to offset the costs of running the server and to invest in some more hardware to make UECIDE even more universal.