Top Alternatives to Polar

Evernote is a note taking application which keeps the notes taken in sync across all platforms using its cloud infrastructure.

Calibre is an Ebook management software.

Pocket is a cloud based article snippet and bookmarking platform.

Google Keep is a cloud based note taking application.

Notezilla is a sticky notes app for Windows.

Simplenote is an easy way to keep notes, lists, ideas and more.

Mendeley is a free reference manager and an academic social network.

Zotero is a powerful, easy-to-use research tool that helps you gather, organize, and analyze sources and then share the results of your research.

Amazon Kindle is a series of e-readers designed and marketed by Amazon.com.

Instapaper browser extension to save links for offline reading.

wallabag is a self hostable application for saving web pages.

TagSpaces is an open source data manager and file navigator. It helps organize files on local drives by adding tags to files.

Adobe Digital Editions (ADE) is an ebook reader software.