Instrumental
Instrumental is a real-time, high-scale application and server monitoring tool with intelligent alerts, a powerful query language, and free development accounts.
linux windows oxs free metrics commercial metrics monitoring visualization php ruby python net java nodejs
NXLog Enterprise and Community Editions
A multi-platform log collection suite to collect, parse, convert and send logs. Integrate with a wide range of products including SIEMs, log analytics dashboards, cloud services, databases, and more.
linux windows bsd solaris osx open-source free commercial logging
r10k
r10k provides a general purpose toolset for deploying Puppet environments and modules. It implements the Puppetfile format and provides a native implementation of Puppet dynamic environments.
linux windows osx open-source free scm
Tinfoil Security
Thorough web application security testing, with an extensive API, easy to hook into CI and issue tracking tools.
linux windows osx free commercial ci monitoring security