RegeditEx is described as 'is written in Java, without any use of Windows APIs. It is similar to the Windows Regedit tool. But differently from Regedit, it can run also in non-Windows environments, like Linux'. There are more than 10 alternatives to RegeditEx for Windows, PortableApps.com and Regedit. The best alternative is Registry Workshop. It's not free, so if you're looking for a free alternative, you could try O&O RegEditor or RegCool. Other great apps like RegeditEx are Registrar Registry Manager (Freemium), Registry Key Jumper (Free), Regedit (Free) and Advanced Regedit (Free, Open Source).
RegEditX makes your registry editing more productive than ever. RegEditX extends the standard Windows Registry Editor (http://alternativeto.net/software/regedit/), so you don't have to learn new ways of accomplishing tasks you already know how to perform.
RegAlyzer is a tool to browse and change the registry. It was created because of a few features we missed in the original regedit tool, from support for exotic value types over background and regular expression search to better bookmarks, displaying .