I dislike how FTP protocol was used as default method of file transfer instead off using more modern methods which are much faster/easier to use like sftp or scpttp; also its lack in support towards non Unix Systems such as Windows OS's can be annoying at times but other than that it works just fine without any major issues being encountered by me with this product so far. It does what it needs and provides good functionality when needed compared to others available out there. Its easy enought to learn yet has powerful features if your willing to spend time learning about them. Not really anything too special since most things could work otherwise you'll have problems anyways unless some one else had already done all the complex coding before hand. Using Linux servers mainly CentOS 7 + Ubuntu 1604 LTS Server setup mostly running Apache2 web sever along side nginx webserver serving up PHP7 applications I love how fast it transfers files to other servers. It allows you to customize your settings so that you can use FTPs features with ease. You have to be patient sometimes when adding new users or uploading lots of files through batch mode but once everything is set up its just as quick as our previous programs! We are able transfer larger amounts of data without waiting times in between file transfers. Sometimes we need help transferring large files with one connection, this software does wonders here.