I would like to know what are the most used software & resources in bioinformatics of this year? Is there some sort of ranking of what areas bioinformatics tools are being used and possibly the number of users?
I think you can go through OMICTOOLS website and may find relevant information you are seeking regarding bioinformatics tools. There provide catalogue of tools/softwares used for various types of data analysis.
In addition to the other suggestions here, you might want to look at things like Altmetric. Measurements like Twitter activity, for example, might be more representative than a citation count in terms of active users.