The best thing i like in InterGATOR is it's ability to index multiple different types of data from various applications such as SharePoint, Exchange etc.
It allows us to have one place for searching our documents, email messages, attachments and other items stored locally and remotely using One Drive, Google drive. Sometimes when we are trying to find something specific it takes some time before it comes up but once it does come up then it usually shows everything related with what I am looking for so there isn't much to dislike. This software has helped me save my work since most times now I don't feel the need to go through each piece of paper again just for finding something specific.