Phosphene
Map ideas, references, and web research in one persistent desktop workspace. Phosphene pairs an Excalidraw canvas with a side browser, local image storage, and SQLite-backed boards so messy planning can stay visible, movable, and recoverable.
Desktop AppExcalidrawEmbedded BrowserLocal SQLiteImage DropBoard PacksLocal-first
Request a walkthrough01
Start a workspace and create boards for different threads of thought.
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Sketch on the canvas while researching in the adjacent browser pane.
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Drop reference images into the board and reopen later with the workspace intact.