ezgif.com - Ezgif.com is simple online gif maker and toolset for basic animated gif editing.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Instagiffer - Create GIFs from anything!
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.
Gifsicle - Gifsicle is a powerful, simple command line tool for creating, editing, and optimizing animated GIFs.
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .