Citationsy BookScanner - Scan the barcodes on the backs of books to cite them
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Citationsy - Citationsy is a reference tool to create citations, reference lists, and bibliographies.
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.
Formatically EDU - A simple, beautiful, and fast citation manager for teachers
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .