As it is a very complete tool, with many features and that sometimes ends up being a little complex, I would recommend it only for medium-sized companies. Perhaps in a large company, it could complicate the processes a little instead of making it easier. But it's a great tool!
Hiring Thing is great for new organizations just starting out with smaller talent teams. It is very simple to use, add users, walkthrough processes, communicate with candidates, and walk through the hiring process. It does not work as well when an organization grows, needs lots of open requisitions, and has a decentralized hiring process.
Search capabilities - ability to pipeline top talent.
Communication with hiring managers in the hiring manager portal - resumes/notes don't get lost in email and are always accessible to anyone involved in the hiring process.
Ability to customize - we've been able to change work flows for different needs, and different business groups as well.
Avature is much better than OpenHire! OpenHire didn't give us the ability to share resumes or notes through the system and was very complicated to keep track of candidates that applied to multiple jobs or duplicate candidates. Was also very archaic in the interfacing and usability. Avature gave us many more options to customize our system.