Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Salt - Fast, scalable and flexible software for data center automation
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.
Bookmarked - Create, share, and browse curated bookmark collections.
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .
Slack It - A bookmarklet to share links in Slack with one click