Cycript 0.9.594 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X is a product of Jay Freeman. We recommend checking the downloaded files with any free antivirus. Cycript for Mac is included in Developer Tools.
From the developer:
Cycript allows developers to explore and modify running applications on either iOS or Mac OS X using a hybrid of Objective-C++ and JavaScript syntax through an interactive console that features syntax highlighting and tab completion. Cycript is a hybrid of ECMAScript some-6, Objective-C++, and Java.
You may want to check out more Mac applications, such as JBuddy Bot Builder, Pleinpot or PLCEdit, which might be related to Cycript.