LICEcap is described as 'Can capture an area of your desktop and save it directly to .GIF (for viewing in web browsers, etc) or .LCF (see below). LICEcap is an intuitive but flexible application (for Windows and now OSX), that is designed to be lightweight and function with high performance' and is a popular screenshot capture tool in the photos & graphics category. There are more than 25 alternatives to LICEcap for a variety of platforms, including Mac, Windows, Linux, Web-based and Android apps. The best LICEcap alternative is ShareX, which is both free and Open Source. Other great apps like LICEcap are ScreenToGif, Peek GIF Screen Recorder, ScreenFlow and GifCam.
GifRun creates gif from existing youtube videos. LiceCap captures screens to gifs