Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
Citavi - Citavi is a program for Microsoft Windows that manages literary references and organizes organizational knowledge.
Wiki.js - An open source, modern and powerful wiki app built on Node.js, Git, and Markdown.
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .
TiddlyWiki - a non-linear personal web notebook