For the many of you who, like me, are big fans or Jan's RegexBuddy, today is a big day: RegexBuddy 4 is out!

It's a spectacular release. I've been waiting for some of the features for a long time (\K, recursion), but Jan went even further. For instance you can convert between different languages.

Free demo:
Glowing review:
Release notes:

It's big news in the world of regex so will be cross-posting my two other favorite regex boards.