Pocket, Zotero, Mendeley, Citavi, Academia.edu, Idenati, Diigo, Qiqqa, Pinboard, JabRef, Linkwarden, Paperpile, SemanticScuttle, Bookends, ReadCube Papers, Brancher, Google Bookmarks, SCRiBBR APA Generator, Docear, Researcher PRO, LARDER, EasyBib, PDF Stacks, wheatt, FoxTrot Professional Search, Peerlibrary, Reference Manager, Shaarli, PDF Search, OutWit Hub, historious, lxi.ai, Weava, KBibTeX, WebCrate, Zenreader, TeamSync Bookmarks, Bibtex Editor, Akonter, I, Librarian, Biblioscape, RefWorks, Gemsmark, BlogMarks, Putmi, Refeus, SciPlore MindMapping, TextCite, PdfIt, Mixtags, ACS ChemWorx, Surfmark, Toosba, OutWit Images, RefMe, Startific, OutWit Docs, Eluma, Mister Wong, WebNotes, LinkBoard, FingerPDF, Pistashio, ProCite, devmark, Linkguardian, Citationsy, Cite This! are some alternatives to BibSonomy.