Pensela

Want an all-round screen annotation tool with drawing, highlighting, text, magnifier and screenshot all in one? Pensela bills itself as the Swiss Army knife of screen annotation—a floating toolbar combining pens, shapes, text, arrows, colors and screenshot, annotating directly on any screen. Cross-platform with a good-looking interface, an all-in-one tool for demos, teaching and screen recording. Free and open source.

Features

All-in-one annotation: pens, shapes, arrows and text in one toolbar.

Annotate anywhere: mark directly over any screen content.

Screenshot: capture your annotated result.

Cross-platform: good-looking UI, free and open source.