Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.

logit.io - Logit.io provides complete observability of logs, metrics and traces. The platform also offers alerting & monitoring, as well as Prometheus, OpenSearch & Grafana. Ingest any type of data to see real-time insights about your applications and services

Anchor CMS - Free and lightweight blogging system

CXGuardian - CXGuardian is a platform powered by QualityKiosk Technologies and allows users to monitor their mobile and web-based applications’ performance.

Textpattern - Textpattern is an elegant content management system that is free, open source software.

AppOptics - Application performance management and infrastructure monitoring.