Codeimg.io - Create and share images of your source code
Marker.io for Slack - Turn screenshots into Slack messages ✌️
Carbonize - Beautiful images of code by Carbon, natively on your Mac
Glui - glui - GLUI is a GLUT-based C++ user interface library which provides controls such as buttons, checkboxes, radio buttons, and spinners to OpenGL applications. It is window-system independent, using GLUT or FreeGLUT.
Ray.so - Create beautiful images of your code
Instashot - Access text from any image instantly.