Open-source Screen Annotation Tool DrawPen Supports Cross-Platform Use
tom_doerr · x · 2026-08-09
DrawPen is an open-source, cross-platform screen annotation tool available for Windows, macOS, and Linux. It provides a transparent overlay layer allowing users to draw shapes, arrows, and text directly over PDFs, code editors, or any application to visualize explanations without altering the original source.
The tool can be installed via package managers like Homebrew and Scoop. It also features robust global keyboard shortcuts (e.g., quickly switching between pen, shapes, text, and highlighter) and has garnered nearly 1,000 stars on GitHub.
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