ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
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.
LightShot - The fastest way to take a customizable screenshot.
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .