I am looking for an easy-to-use tool to identify 1:1 orthologs among the gene sets of 50 species (whole genomes are available). Could you recommend any tools that will do this job for me in a rather uncomplicated way?
Orthofinder does exactly what you need. https://github.com/davidemms/OrthoFinder
Although it uses many additional software, it is super easier to use and gives you a list of orthologs genes in a 1:1 way. If you are planning to find orthologs genes among 50 species, I recommend you to use diamond for blast step instead of traditional blastp.