Leapian Alternatives

Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.

Open Source

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.

Optimize your schedule with custom booking pages and calendar integrations

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Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.

Graphical Java application for managing bibtex (. bib) databases.‎JabRef · ‎JabRef Help · ‎JabRef | Blog · ‎OpenOffice/LibreOffice .

ZoteroBib is a free service to help people quickly create bibliographies without installing any...

BibDesk is an organizational software created to help you edit and manage your bibliography. It keeps track of your bibliographic information as well as said information's associated web links and files. Read more about BibDesk.

Automatic works cited and bibliography formatting for MLA, APA and Chicago/Turabian citation styles.

Clean and simple and reference management for the web. Sync your PDFs to Google Drive and cite your papers in Google Docs.

Skim is a PDF reader and note-taker for OS X.

DEVONtechnologies develops DEVONthink, DEVONagent, and other Mac and iOS apps for document and information management and web research.

A powerful document manager for Mac, Windows, and Linux for managing web content, books, and notes and supports tagging, annotation, highlighting and keeps track of your reading progress.

BibSonomy is a system for sharing bookmarks and lists of literature (BibTex format).

CiteDrive is a cloud-first, collaborative, BibTeX-native reference manager created by and for Overleaf, LaTeX, and R Markdown users.