Downloading GitAhead 1.2.6 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The actual developer of this Mac application is Scientific Toolworks, Inc. The application lies within Developer Tools, more precisely IDE.
From the developer:
GitAhead is a full-featured source code editor. Syntax highlighting for dozens of languages makes your source code more beautiful and comprehensible. The language-aware indexed search is instantaneous and precise. You will find exactly what you're looking for instead of wading through a bunch of unrelated commits. A rich log view shows what's going on and how to solve common issues.
You may want to check out more software for Mac, such as TopCoder UML Tool, InfoPlistChecker or JIRA Client, which might be similar to GitAhead.