collectd

A daemon that collects system performance statistics periodically, and provides tons of plugins to store and analyze these values

     

linux windows osx open-source monitoring c

Consul

Consul makes it simple for services to register themselves and to discover other services via a DNS or HTTP interface. Register external services such as SaaS providers as well

     

linux windows osx open-source service-discovery go monitoring

Monit

An open source utility for managing and monitoring processes, programs, files, directories and filesystems

     

linux osx open-source monitoring process-mgmt c

Nomad

Nomad is a lightweight workload orchestrator. It offers client instance scaling as well as workload scaling.

     

linux windows osx open-source virt orchestration go

Rex

A agent-less server orchestration tool built on Perl

     

linux windows osx open-source orchestration perl

Serf

Serf is a service discovery and orchestration tool which is highly decentralized, highly available, fault tolerant, cross platform and extremely lightweight.

     

linux windows osx open-source orchestration go

Statman

Statman makes it possible to instrument and collect statistics from your high-traffic production Erlang systems with very low overhead. The collected data points are aggregated in the VM and can be sent to services like Graphite, Munin, New Relic, etc.

     

linux windows osx open-source monitoring erlang

Zabbix

An open source, enterprise-class monitoring framework

     

linux windows osx open-source monitoring c