op5 Monitor 7.0.9 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The software belongs to Internet & Network Tools. This free program was originally developed by op5. The most popular version among the software users is 7.0. We recommend checking the downloaded files with any free antivirus.
From the developer:
Our open and flexible server and network monitoring solution delivers a unified view of your entire IT environment. Monitor up to 100,000 devices from a single server, with distributed and redundant solutions for nearly-infinite scalability.
With full support for the entire library of Nagios plugins, and leveraging the newest Naemon core, the possibilities are truly limitless.
You may want to check out more software, such as OP5 NSClient++ Windows Agent, Phone Monitor or LAN Audio Monitor Sending End, which might be related to op5 Monitor.