CS conferences not indexed by Scopus or Web of Science? I have read that there are some good Computer Science conferences that are not indexed by Scimago or Scopus, but instead they appear in sites like ACM DL, IEEE Xplore or DBLP. I have tried to find information about those conferences, but not success at all. For that reason, I was wondering if anybody in the field knows of some good conferences in CS that do not appear in the aforementioned sites?

Thanks
That is correct: most good computer science conferences have not been indexed by the standard journal indexes (maybe this will change someday, but it hadn't last I'd heard).  

A good alternative for evaluating the quality of a conference or to search for decent conferences is to use Google Scholar's "venue metrics" function.  For example, searching for "programming" finds top programming-language conferences, such as ASPLOS, PLDI, POPL, and OOPLSA.  It is interesting to note that in these results, if one ignores the non-field "Mathematical Programming", the first journals don't show up until halfway down the list.

Three caveats:


The search isn't currently very smart; it's very literal in its use of words.  Thus, for example, searching "programming languages" doesn't find ICFP.
Only the top 20 venues for a given query are returned, and you can't look for more.
Some decent but highly-specific venues still don't appear.