Various online tools, databases, references, cheatsheets, etc, that I’ve found over the years to be helpful in my day to day work.

If you have any suggestions to add, or a better way to organize this page, feel free to let me know in the comments.

Fiddlers:

  • .NET Fiddle
    • C#, VB.NET, F#
  • CodePen
    • Front End (HTML, CSS, JS with multiple pre-processor options)
  • db<>fiddle
    • RDBMS Fiddler (MySQL, Oracle, Postgres, SQL Server, SQLite, etc)
  • JSFiddle
    • Front End (HTML, CSS, JS with multiple pre-processor options)
  • regex101
    • Regex Fiddler
  • Repl.it
    • Multi-language fiddler (too many to list) (requires signing up)
  • Rextester
    • Multi-language fiddler (too many to list)
  • SQL Fiddle
    • RDBMS Fiddler (MySQL, Oracle, Postgres, SQL Server) - Nearly always broken or slow, try dbfiddle.uk instead

Code sharing / collaboration:

Diagramming:

Misc:

Networking:

Reference: