Before revision:  In parallel, sophisticated tools  to process, visualize and analyze tracking data have been developed in abundance. Within the R software alone, we listed 57 focused on these tasks, called here tracking packages.
After revision:  In parallel, sophisticated tools to process, visualize and analyze tracking data , however many of these tools have proliferated in isolation, making it challenging for users to select the most appropriate method for the question in hand. Indeed, within the R software alone, we listed 57 focused on these tasks, called here tracking packages.