inline Online Programming Tools

Originally published on May 1st, 2020 (Last updated on February 18th, 2021)

Charts and Diagrams

  • Plant­Text — Free online edi­tor for Plan­tUML dia­grams, with examples
  • Code2Flow — Cre­ate Flow-Charts with a sim­ple, C‑like markup language.
  • Web­Se­quence­Di­a­grams — Sequence Dia­grams from a sim­ple markup language.

Reg­u­lar Expressions

  • Regex101 — Craft, visu­al­ize and val­i­date reg­u­lar expres­sions against example-data.


  • Explain­Shell — Explains a shell com­mand and it’s parameters.



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You can reach me over at @knuth_dev or send me an Email.