Netdata is an open-source (GPLv3) real-time server monitoring tool, collecting system metrics at second-level resolution with hundreds of preconfigured alert rules and 200+ application monitoring.
Founded in 2017 and headquartered in New York and San Francisco, Weights & Biases is an ML experiment tracking and visualization platform used by 500,000+ data scientists, offering dashboards, Sweeps hyperparameter search, model registry and team collaboration.
Portainer is an Australian open-source container management platform deployable from a single container, unifying Docker, Docker Swarm and Kubernetes management. The CE edition is free forever, making it one of the most popular web UIs for self-hosted container environments.
Hours is a minimal iOS/Web time tracking app featuring color-coded visual time allocation, with project and tag management, suited to individuals and small teams logging hours by project.