Collabshot - Free web and desktop application that enables quick screen grabs, easy URL-based sharing, and live, multi-person drawing and sketching.
Screenshotlayer - Screenshotlayer is a lighweight REST API built to deliver PNG, JPEG & GIF website screenshots at unparalleled speeds.
Flameshot - Powerful yet simple to use screenshot software for Linux.
LICEcap - A straightforward, high performance application that enables users to capture a portion of the desktop and save it to . GIF or . LCF, LICEcap is available for download as a GPL free software.
Nimbus Screenshot - Take screenshots and record video from your screen
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...