Diagrams, graphs, uml, etc. tools

Tutorials

The Art of Crafting Architectural Diagrams

Graphviz and dot language

Graphviz - Graph Visualization Software Useful for automated generation and middle/big size diagrams/graphs. Useless for manual generation and small size diagrams/graphs, because requires spend time to beautify result.

PlantUML

PlantUML PlantUML online editor Tools

Draw.io

Draw.io