Evernote
Freemium
Evernote is a note taking application which keeps the notes taken in sync across all platforms using its cloud infrastructure.
Google Keep
Free
Google Keep is a cloud based note taking application.
Simplenote
Open Source
Simplenote is an easy way to keep notes, lists, ideas and more.
Instapaper
Free
Instapaper browser extension to save links for offline reading.
TagSpaces
Freemium
TagSpaces is an open source data manager and file navigator. It helps organize files on local drives by adding tags to files.
Pocket
Freemium
Pocket is a cloud based article snippet and bookmarking platform.
Notezilla
Commercial
Notezilla is a sticky notes app for Windows.
Amazon Kindle
Free
Amazon Kindle is a series of e-readers designed and marketed by Amazon.com.
wallabag
Open Source
wallabag is a self hostable application for saving web pages.
Compare Polar with alternatives
Compare Amazon Kindle and Polar and decide which is most suitable for you.