Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Giffing Tool - Giffing Tool is simply put: The fastest creator of high quality captioned GIFs available.
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
Gifox - Delightful GIF Recording and Sharing App for macOS
Citavi - Citavi is a program for Microsoft Windows that manages literary references and organizes organizational knowledge.
Honeycam - Make wonderful Animated GIFs by using Honeycam, very easy GIF image-making and editing software!