MetaObjects 1.0 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. The software lies within Developer Tools, more precisely Webmaster Tools. This free Mac application is an intellectual property of Sergio Matinez-Losa Del Rincon. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
MetaObjects for Xcode is an application designed to help you create preprocessor marks fast and easily. The utility is an Xcode extension that generates preprocessor marks for Objective-c and Swift. You are guided in your attempt by wizard-like indications.
You may want to check out more software for Mac, such as solr, joomla- or HtmlTidy, which might be similar to MetaObjects.