There are several arxiv overlay journals. Example:
 <a href="http:&#x2F;&#x2F;www.emis.de&#x2F;journals&#x2F;SIGMA&#x2F;about.html" rel="nofollow">http:&#x2F;&#x2F;www.emis.de&#x2F;journals&#x2F;SIGMA&#x2F;about.html</a>