Hexstar

The Extensible & Powerful Hex Editor

How does it look

An early preview of what it's supposed to look like is something around these lines:

What it will do

It'll most likely

be easy to download and install;
be easy to use and get rid of;
be capable of working with gigabyte-sized files;
have the ability to checksum, encrypt, decrypt and ruin your files;
have an awesome plugin API which will let other coders add nice plugins;
have a comprehensible layout and nice look and feel;
delete your Habbo Hotel account.

More features will get added when they are being considered.