i am not able to see custom web part on my anonymous site in sharepoint 2010. when i add out of box web part it is visible but custom web part is not visible.
please help me to resolve this.
to better be able to help you debugging this we need more info
do you have the custom web part working somewhere (for example in non-anonymous dev. environment)?
At the end of your url just append contents=1 like(http://.....aspx?contents=1) and see whether your webpart is loaded on page or not.
i just edited the page and there was a publish option on ribbon . i clicked on it. after that it starts working.