The 5.5 version of IO Ninja for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The application lies within Developer Tools, more precisely Webmaster Tools. This free software for Mac OS X was originally created by Tibbo Technology Inc.
From the developer:
IO Ninja is a professional, scriptable, multi-purpose terminal emulator, network sniffer, and IO monitor. It's aimed at network security experts, system administrators, and all kinds of software/hardware/embedded developers. IO Ninja's advanced logging engine shows massive logs in a clean, easy-to-read way. It'll gracefully display informational text messages side-by-side with binary data blocks in either hex view or plain text representations.
You may want to check out more Mac applications, such as Ninja-IDE, Frame.io or Proto.io, which might be related to IO Ninja.
Network Tools
System Optimization