Qiqqa is by far the strongest solution for research and managing pdf's. Zotero, named as a comparison is weak as it does not allow pdf;s to be loaded into its interface - you need to use a pdf reader, which defeats its whole purpose. With Qiqqa documents in a library can be searched together. It has excellent maps of your libraries. It is not prefect, having a few glitches, but still is the only one of its kind.
TigerText Essentials - Empower care teams to communicate efficiently with TigerText Essentials, a secure, HIPAA-compliant communications and messaging solution. Communicate securely from your smartphone or desktop!
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
Redox - Redox provides an EHR integration platform for digital health solutions.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
TigerFlow - Getting our start in 1985 by taking on the custom projects that no other company could complete, TIGERFLOW Systems, LLC has provided custom engineered systems with single source responsibility for decades.
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .