osquery vs Ossec: What are the differences?
Developers describe osquery as "Expose the operating system as a relational database (by Facebook)". osquery exposes an operating system as a high-performance relational database. This allows you to write SQL-based queries to explore operating system data. With osquery, SQL tables represent abstract concepts such as running processes, loaded kernel modules, open network connections, browser plugins, hardware events or file hashes. On the other hand, Ossec is detailed as "A Host-based Intrusion Detection System". It is a free, open-source host-based intrusion detection system. It performs log analysis, integrity checking, registry monitoring, rootkit detection, time-based alerting, and active response.
osquery and Ossec are primarily classified as "Desktop Querying" and "Security" tools respectively.
osquery is an open source tool with 14.4K GitHub stars and 1.77K GitHub forks. Here's a link to osquery's open source repository on GitHub.