Recently I got a review asking me to compare my work with a few more works in the same domain. Now in my work, I developed a tool, and have made it publicly available. I have been asked by the reviewers to compare my tool with a few other tools available. While trying to compare I found none of the tools are maintained publicly. I have mailed them for the codes of these tools but no one replied. The executables are also not available. I mailed them for these executables only. But no one replied. What should I do?
Note: There were 2 reviewers. One said either compare properly or remove this section totally, other asked me to compare the works. Apart from this comment, all other comments have been addressed.