+Savannah aims for long-term stability and availability - operating since +late 2000 and hosting source-code which dates back to 1985. Source code +repositories, mailing lists, websites, FTP/HTTP downloads are all kept +indefinitely with a stable URL (compared with GoogleCode closing after +9 years, Gitorious sold and closing down after 7 years, and SourceForge +problematic takeover of some projects).
I don't think we gain anything by mentioning the other sites. Tweaked version: Savannah aims for long-term stability and availability. It has been operating since late 2000 and hosts source code which dates back to 1985. Source code repositories, mailing lists, web sites, files for download, tracker items, etc., are all kept indefinitely with stable urls. Thanks, K