Glances

While not precisely a server management application, Glances does assist in monitoring your server which could help you manage it. 
 Glances is a feature rich, lightweight monitoring tool for a plethora of platforms including GNU/Linux, FreeBSD, OS X and Windows. 
 Glances can be accessed from a terminal or web interface and provides meaningful statistics and features such as: 
 
 
 
 
 CPU Load 
 
 
 Memory 
 
 
 
 Network interface 
 Process list 
 
 
 Disk I/O 
 IRQ / Raid Sensors 
 
 
 Docker 
 Filesystem 
 
 
 Monitor Alarms & Uptime 
 System info 
 
 
 
 You can export all system statistics to CSV, InfluxDB, Cassandra, OpenTSDB, StatsD, ElasticSearch or even RabbitMQ. Glances also provides a dedicated Grafana dashboard.  
 
 Installation 
 There are several installation methods for Glances. While I exclusively use the container methods of installation; you can find all the installation....IN PROGRESS