Today I found a nice Visual Studio Extension for working with localization and resx files: Resx Resource Manager. This extension provides an additional view in your project and scans all the resx files. I would recommend it to all projects where you have to translate your interface. Here is how it looks in my project: It can also assist with some machine translation from Bing and MyMemory: Another good thing is the Export and Import to and from Excel.

Yesterday Waldek Mastykarz published a cool post: Globalizing JavaScript in SharePoint 2013. This is a very cool technique to localize your client code in javascript and reuse your resx files in Server Side and Client Side. This is actually not new for SharePoint 2013 despite it has become more needed with the huge client focus in the new SharePoint. I have used this in SharePoint 2010 for a long time. In my blog post: ScriptResx.

If your solution has two or more languages to support, I can recommend an open source tool ResxCrunch. Btw, you can even use ResxCrunch for localization of Android applications.