The 2.51.0.51 version of CATC MerlinII is provided as a free download on our website. The following versions: 2.5 and 2.4 were the most frequently downloaded ones by the program users. The software lies within Internet & Network Tools, more precisely Network Tools. This free software is an intellectual property of LeCroy Corporation. MerlinII.exe is the most common filename for this program's installer.
From the developer:
LeCroy’s Merlin II™ is a powerful protocol analyzer for Bluetooth. Small and portable, Merlin II is easy to position near the device under test. It features extensive triggering, robust filtering, spool-to-disk recording and the CATC Trace display to speed up interpretation and debug of Bluetooth traffic.
Based on LeCroy's original Merlin™ protocol analyzers, the Merlin II is a powerful Bluetooth protocol analyzer.
You may want to check out more software, such as PageScope Network Setup, Veeam FastSCP or CrossFTP Server, which might be related to CATC MerlinII.