Apple Freeform
https://support.apple.com/guide/freeform/welcome/mac
Apple Keynote
https://support.apple.com/guide/keynote/welcome/mac
Apple Notes
https://support.apple.com/guide/notes/welcome/mac
Apple Numbers
https://support.apple.com/guide/numbers/welcome/mac
Apple Pages
https://support.apple.com/guide/pages/welcome/mac
ASCIIFlow
https://asciiflow.com/#/
Balsamiq
https://balsamiq.com/
Box Canvas
https://www.box.com/canvas
Box Notes
https://www.box.com/notes
BPMN.io
https://bpmn.io/
C4 Model
https://c4model.com/
Canva
https://www.canva.com/online-whiteboard/
Confluence Whiteboards
https://www.atlassian.com/software/confluence/whiteboards
D2
https://d2lang.com/

Powers Terrastruct

Dia
https://wiki.gnome.org/Apps/Dia

No longer updated

Diagrams (Python)
https://diagrams.mingrammer.com/
Diagwiz
https://diagwiz.io/playground/
draw.io
https://app.diagrams.net/
Excalidraw
https://excalidraw.com/
FigJam
https://www.figma.com/figjam/
Figma Design
https://www.figma.com/design/
Frame0
https://frame0.app
FreeMind
https://freemind.sourceforge.io/wiki/index.php/Main_Page
Google Docs
https://www.google.com/docs/about/
Google Drawings
https://docs.google.com/drawings
Google Jamboard
https://jamboard.google.com/
Google Sheets
https://workspace.google.com/products/sheets/
Google Slides
https://workspace.google.com/products/slides/
Ilograph
https://www.ilograph.com/
LaTeX
https://www.latex-project.org/
Linearity
https://www.linearity.io/
LucidChart
https://www.lucidchart.com/pages/?
Mermaid Chart
https://www.mermaidchart.com/app/dashboard
MermaidJS
https://mermaid.js.org/
Microsoft Excel
https://www.microsoft.com/en-us/microsoft-365/excel
Microsoft Visio
https://www.microsoft.com/en-us/microsoft-365/visio/flowchart-software
Microsoft Whiteboard
https://www.microsoft.com/en-us/microsoft-365/microsoft-whiteboard/digital-whiteboard-app
Microsoft Word
https://www.microsoft.com/en-us/microsoft-365/word
MindNode
https://www.mindnode.com/
Miro
https://miro.com/
Mockups
https://getmockup.app/
Monodraw
https://monodraw.helftone.com/
MonoSketch
https://monosketch.io/
Mural
https://www.mural.co/
Muse
https://museapp.com/
OmniGraffle
https://www.omnigroup.com/omnigraffle/
OmniOutliner
https://www.omnigroup.com/omnioutliner/
OrgMode
https://orgmode.org/
Overleaf
https://www.overleaf.com/
Pencil
https://www.pencil.dev/
Scapple
https://www.literatureandlatte.com/scapple/overview
Schem
https://schem.io/
Sketch
https://www.sketch.com/
Sketch Systems
https://sketch.systems/
Slack Canvas
https://slack.com/features/canvas
Story Mapping
https://jpattonassociates.com/story-mapping/
Terrastruct
https://terrastruct.com/
tldraw
https://www.tldraw.com/
XMind
https://xmind.app/
Zoom Whiteboard
https://www.zoom.com/en/products/online-whiteboard/