ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
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.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Snagit - Screen Capture Software for Windows and Mac
Qiqqa - Qiqqa is a free research and reference management software. It can be used in many organizational projects from the academic to the personal to the business endeavor. Read more about Qiqqa.