What recruitment software do you use, and why?
What recruitment software do you use, and why did you choose it? What recruitment software features/capabilities are most important to you? How often do you use it?
Do you mean like software that helps you recruit employees? Then honestly, I like using Facebook. The targeting abilities are great! They are more limited with job opportunities but you can still target people and cater your ads to who you are trying to attract.
If you are having a startup then I would suggest you to recruit people by your work as you will be better able to find the right people with the vision you have for the company.