check_mk
Check_MK is an extension to the Nagios monitoring system that allows creating rule-based configuration using Python and offloading work from the Nagios core to make it scale better, allowing more systems to be monitored from a single Nagios server. It comes with a set of system checks, a mod_python and JavaScript based web user interface, and a module that allows fast access to the Nagios core. On top of Nagios it also adds additional features
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GitBucket
A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility.
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Icinga 2
Icinga 2 is the newest version of Icinga. It is a scalable and extensible monitoring system which checks the availability of your resources, notifies users of outages and provides extensive BI data.
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Apache Libcloud
Python library for interacting with many of the popular cloud service providers using a unified API.
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Nagios Core
Nagios Core network monitoring software is a powerful, enterprise-class host, server, application, monitoring and alerting tool
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OneDev
The open source git server with unique features.
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