RegEx Generator
RegexMagic you don't have to deal with the regular expression syntax at all. RegexMagic generates complete regular expressions to your specifications.
RegEx Buddy
RegexBuddy lays out any regular expression in an easy-to-grasp tree of regex building blocks. RegexBuddy updates the tree as you edit the regular expression. Much easier is to work with the regex tree directly. Delete and move regex building blocks, and add new ones by selecting from clear descriptions. You can get a good overview of complex regular expressions by collapsing grouping and alternation blocks in the tree.