visualization

Draw.io (diagrams.net) is a free web-based diagramming application for creating flowcharts, network diagrams, UML models, and architectural visualizations with real-time collaboration features.

The ELK Stack is an integrated data analytics platform combining three open-source tools: Elasticsearch (search/analytics engine), Logstash (data processing pipeline), and Kibana (visualization interface) that work together to collect, process, store, search, and visualize large volumes of data in real-time.