- [Linux Dash](https://github.com/afaqurk/linux-dash) - A low-overhead monitoring web dashboard for a GNU/Linux machine. `MIT``Nodejs/Go/Python/PHP`
- [Monit](https://mmonit.com/monit/#home) - Small utility for managing and monitoring Unix systems. ([Source Code](https://bitbucket.org/tildeslash/monit/src/master/)) `AGPL-3.0``C`
- [n01d-sysmon](https://github.com/bad-antics/n01d-sysmon) - Cyberpunk-themed system monitoring toolkit with ASCII dashboards, real-time metrics, and alerting. Combines htop-style interface with hacker aesthetics. ([Source Code](https://github.com/bad-antics/n01d-sysmon)) `MIT``Python`
- [Naemon](https://www.naemon.org/) - Network monitoring tool based on the Nagios 4 core with performance enhancements and new features. ([Source Code](https://github.com/naemon/naemon-core)) `GPL-2.0``C`
- [Netdata](https://www.netdata.cloud/) - Distributed, real-time, performance and health monitoring for systems and applications. Runs on Linux, FreeBSD, and MacOS. ([Source Code](https://github.com/netdata/netdata)) `GPL-3.0``C`