If you are interested in keeping up with the newer devices that become available for research on the web this is a very rich site. The compiler has done extensive research on a wide range of resources, including the best known search engines.
The information under "Search Engine Listings" will provide a useful list of reviewed search mechanisms.
As the website states "The European Library is a free service that offers access to the resources of the 48 national libraries of Europe in 35 languages. Resources can be both digital (books, posters, maps, sound recordings, videos, etc.) and bibliographical. Quality and reliability are guaranteed by the 48 collaborating national libraries of Europe."
This is an enormously valuable site. It was first launched on the Internet as Gabriel in 1995. Since that time it has expanded its services. Today, it provides a gateway to a wide range of information on almost all the national libraries, as can be seen from the home page.
This site has always provided an excellent list of Western sites on the internet. While more limited than the similar site at Pittsburgh it is an excellent source for sites on the media of the region, governments sites and other information.
One of the best and most comprehensive sites on Slavic studies the Russian and East European Site at the University of Pittsburgh has recently undergone a facelift. The new site is easier to search than its predecessor. It still remains a central point for the listing of sites in the Slavic field and is an excellent starting point, especially for Western sites on Slavic studies.
By all accounts, this is one of the most thorough listing of regional search engines. It is arranged by country and will present the user with a simple list of countries. Clicking on a country will provide another list of search engines. It is updated frequently and has one of the largest collections of links for specialized search engines of any site.