Download of LinCastor 2.4 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. LinCastor was developed to work on Mac OS X 10.8 or later. The most popular version among LinCastor for Mac users is 1.3.
The actual developer of this free Mac application is onflapp. The program's installation file is generally known as lincastor.zip. 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. The software relates to System Tools.
From the developer:
LinCastor enables you to register your own custom URL scheme (e.g., mylink://foo/bar) and associate it with an application, shell or AppleScript handler.
As most OS X application support embedding links as part of a text, custom URL schemes provide a great way to connect different applications together or trigger custom workflows. For example: a link jira://issue1234 could open a JIRA tracker with specific issue.
You may want to check out more software for Mac, such as LinCastor Browser, which might be related to LinCastor.