CKAN is open source data management portal software for extremely large data sets, on the scale of entire governments. Used to publish, curate, share, search, and find datasets of just about any kind. Does visualization and metrics. Source code on Github (https://github.com/ckan/ckan). Written in Python, uses Postgres as its back end. Can interface with Apache Solr for search and indexing.

A FOSS platform for analysing and visualizing large sets of documents. Designed with investigative journalists in mind but has other uses. Has a plugin system. Can be run as a server or locally (https://github.com/overview/overview-local). Designed to run as a docker container (bluh) but running it as-is shouldn't be difficult. Written in scala (wtf?) Seems to use postgres as its back-end.

Clair is a FOSS utility for conducting static security analysis of Linux containers, Docker containers in particular. Clair continually updates its internal index of known vulnerabilities so it can keep constant watch over what it monitors. Has a modular architecture to make it easier to extend the project without having to fork() it. Also designed to fit into a CI/CD pipeline to monitor in-house containers as they're built. Plugs into Kubernetes. Requires Postgres. Written in Go.  sysadmin infosec scanner scanning