Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
IDocument - Feel powerless of your documents chaos in your Mac?
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Managify - Create & organize all your documents in a single platform.
PDF Stacks - PDF Stacks software program helps you organize and manage PDF files, papers and documents. Easily search and read your PDF documents on a PC and MAC
Ashore App - Built for agencies and creatives, Ashore is an automated design approval system combined with approval workflow software. Get started for free!