MonoSketch

MonoSketch is an ASCII sketching and diagramming app that creates text-based diagrams and sketches for planning, design, and documentation.

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For developers, technical writers, and anyone who needs diagrams that work in plain text, MonoSketch helps create ASCII sketches for documentation, code, and explanations. Draw with rectangles, text boxes, and connecting lines, then adjust borders, fills, corners, and line-end decorations to make flowcharts, system diagrams, circuit sketches, and other text-based visuals. The browser-based editor includes an expandable canvas, autosave, multiple projects, and tools for arranging and duplicating shapes. Copy a diagram as text or export selected shapes or the full drawing for use elsewhere.

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