What are some alternatives?
When comparing FileZilla Server and Titan FTP Server, you can also consider the following products
vsftpd - Very secure FTP Daemon, a secure, fast FTP server for UNIX systems, including Linux.
PagerDuty - Cloud based monitoring service
ProFTPD - The Official ProFTPD web site. ProFTPD is a high-performance, extremely configurable, and most of all a secure FTP server, featuring Apache-like configuration and blazing performance.
OpsGenie - Alerting and On-Call Management for Dev&Ops Teams
Serv-U FTP Server - FTP server software
Site24x7 - Site24x7 offers both free & paid website monitoring services. Monitor websites remotely and receive instant email/sms alerts if your website becomes unavailable. View uptime & performance graphs of your website monitors.