POLAR Alternatives

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

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.

Save the web, freely.

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

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

The simple way to save & annotate web pages and PDFs, compare different concepts across the literature, organize your bibliography and generate citations.

freemium $1.25 / Monthly (2GB Storage, 10 Projects)

Diigo is a powerful research tool and a knowledge-sharing community

Workspace to highlight, organize & collaborate on your research articles.

When you find something you want to view later, put it in Pocket.

Turn your smartphone photos into polaroids

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.

Photo printer that uses AR to create moving pictures