Snagit is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best open source Linux alternative is Flameshot. If that doesn't suit you, our users have ranked more than 100 alternatives to Snagit and many of them are open source and available for Linux so hopefully you can find a suitable replacement. Other interesting open source Linux alternatives to Snagit are Shutter, Ksnip, Spectacle and NormCap.
Flameshot is a free, open-source screenshot tool that is cross-platform compatible, offering customization, editing features, CLI scripting, and direct Imgur uploads for seamless sharing. It provides an intuitive user experience through features like area selection, annotations, and saving options.
Shutter is a feature-rich screenshot program for Linux based operating systems. It is free, open-source, and licensed under GPL v3.
Ksnip is a Qt based cross-platform screenshot tool that provides many annotation features for your screenshots.
Spectacle is a simple application for capturing desktop screenshots. It can capture images of the entire desktop, a single monitor, the currently active window, the window currently under the mouse, or a rectangular region of the screen.
Hotshots is a screenshot tool with some editing features. It is particularly suitable for writing documentation (as used in the following chapters) but you can use it to highlight some details on a map image or what ever you want.
Swappy is a Wayland screenshot editing tool featuring brushes, text, shapes, arrows, and blur. Images can be saved locally or copied directly to the clipboard.
Germany
EU
Switzerland
France
If you're looking to make "8x10 glossy photograph with the circles and arrows and a paragraph on the back of each", it can't be beat. Lightweight, does its job, gets out of the way quick.