Oyster 1.4 for Mac can be downloaded from our website for free. Our antivirus scan shows that this Mac download is safe. The application lies within Developer Tools, more precisely IDE. The actual developer of this Mac application is RED When Excited Ltd.
From the developer:
Oyster helps you interactively build and test regular expressions--which aren't the easiest things to build and debug--storing each "pearl" in an easy-to-access library.
You may want to check out more Mac applications, such as Rock Guitar For Dummies or PithHelmet, which might be related to Oyster.