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 .reg files in the accustomed style and a history view.

Functionality
1. A short list of the pros of RegAlyzer:
New: Undo and Redo logs in .reg format
Improved search function (results list)
Hierarchical bookmark support
Jump to key by command line parameter
Jump to key by typing/copying it into dialog (instead of browsing)
DWord editing with parallel hex/decimal/binary display
Support of QWord (64 bit integer)
Display of .reg file contents without importing it
Support of version 5 files (Unicode) even with Windows 95/NT
Low-level display of security settings with option to export it
But there are a few not-yet completed features as well:

2. Complete Unicode support
Display and import support for some system stuff (REG_LINK, REG_RESOURCE_DESCRIPTOR, etc.)
Changing security settings
Remote connection doesn't ask login yet
Changing opened .reg file
Editing binary data
Working (add/delete/etc.) in remote registry