The best open source alternative to HotShots is ShareX, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to HotShots and 19 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to HotShots are Greenshot (Freemium, Open Source), Ksnip (Free, Open Source), Spectacle (Free, Open Source) and GoFullPage (Formerly Full Page Screen Capture) (Freemium, Open Source).
ShareX is a free and open source program that lets you capture or record any area of your screen and share it with a single press of a key. It also allows uploading images, text or other types of files to over 80 supported destinations.
Ksnip is a Qt based cross-platform screenshot tool that provides many annotation features for your screenshots. Latest ksnip version contains following features: * Supports Linux (X11, Plasma Wayland, GNOME Wayland and xdg-desktop-portal Wayland), Windows and macOS.
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.
ScreenCloud is an easy to use screenshot sharing application. Take a screenshot using one of the 3 hotkeys or simply click the ScreenCloud tray icon. You can choose where you want to save your screenshot.