便利なツールサイト

https://makereal.tldraw.com/

https://tidraw.net/

https://www.ilovepdf.com/ja

https://oraoto.github.io/pib/

https://asciiflow.com/#/

https://tidraw.net/

https://microsoft.github.io/monaco-editor/playground

Simulator

https://distrosea.com/

https://www.tutorialspoint.com/unix_terminal_online

CLI