Open Data 

https://www.nstac.go.jp/use/literacy/ssdse/#SSDSE-F

https://jstatmap.e-stat.go.jp/map.html

便利なツールサイト

https://httpbin.org/

https://tidraw.net/

https://www.ilovepdf.com/ja

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

https://asciiflow.com/#/

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

Simulator

https://distrosea.com/

https://www.tutorialspoint.com/unix_terminal_online

else

https://www.thetruesize.com

https://terminaltrove.com/

https://ss64.com/

UC