How to search for an open access journal with no publication fee?
The set of journals you are describing is almost guaranteed to be equivalent to the null set. You are specifying way too many criteria on the journal. You are basically asking for a complete wish list that no single journal can reasonably satisfy and still survive. For instance: 


How does it pay its ISP hosting bill? 
Who handles the processing and editing of articles? 
Who does the typesetting and copyediting? 
Who maintains the web site?


All of these things require labor, and is not something that anyone is likely willing to donate pro bono. That means income has to come from somewhere.

Some of these criteria are not problems (for example, a CS journal is unlikely to refuse a LaTeX submission). However, in total, I think you really need to decide which criteria are required, and which ones would be nice to have. Then prioritize accordingly.