The Carel 1Tool is a software used for configuring and monitoring Carel controllers, which are widely used in HVAC (heating, ventilation, and air conditioning) and refrigeration systems. The versions you mentioned, 2.6.46 and 2.6.57 SP1, refer to specific releases of the 1Tool software, with the latter being a more updated version that includes a service pack (SP1) for additional features and bug fixes.
The base 2.6.57 introduced a feature called "Live Alarm Streaming." Unfortunately, it caused the software to consume 100% CPU on a single core after 48 hours of operation. resolved: Carel 1tool 2.6.46 2.6.57 SP1
is included to help users transition legacy projects from EasyTools to 1tool. CAREL Industries Software Limitations and Legacy Status The Carel 1Tool is a software used for