Online Flowchart and Diagram Maker

    https://app.diagrams.net/

    Very handy. Many options, blocks, and styles. Link associations remain between blocks when moved around.

    A lot of similar tools exist online now, but VERY few with no registration at all.

    The result can be saved or downloaded as xml, png or svg directly to your GoogleDrive, OneDrive or Dropbox (is all of this safe?), or downloaded locally

    Free, No Download/Install required, No registration