The free online uptime monitoring service with an App is available for iOS and Android.
With the Free Plan, you can monitor up to 50 URLs, check for a website's content (using the keyword monitor), ping your server or monitor your ports in 5-minute intervals. You can create a status page to showcase your uptime. SMS or Call alerts can be bought anytime.
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Component Content Management System for Software Documentation
Great tool for serious technical writers
Paligo is an end-to-end Component Content Management System (CCMS) solution for technical documentation, policies and procedures, knowledge management, and more.
Kepler is a monitoring system for HPC clusters : it allows users to monitor cluster elements like nodes, network devices and storage nodes. Analyse can be centered on jobs to determine performances and behaviours.