Tranquility Reader Alternatives

Tranquility Reader

Tranquility is a FireFox extension that improves the readability of web articles.

Tranquility removes unnecessary elements in a webpage, and provides a simple and tranquil reading experience. Similar functionality is available through Readability or iReader. Tranquility attempts to solve the same problem using a different approach.
Features:

Compatible with NoScript
Save content offline for reading later (from version 1.1.4). The tranquility view is saved locally on your computer
Ability to customize default font, font-size, font color, background color, and width of the reading area
Add/edit notes/annotations to portions of the offline content; collate annotations with context for a summary of all your notes and annotations.
Preliminary support for multi-page documents (where a print view or a single page view is provided)
Selected text can be queried in Wikipedia or Wiktionary through right click context menu options or using the keyboard shortcuts Ctrl+Alt+W and Ctrl+Alt+D respectively. Click outside the Wiki panel to hide it
Ability to disable the background image from the preferences window
Additional links are now available through a "More Links" button
Tranquil Browsing Mode is enabled by default. In this mode, left clicking on a link in the Tranquility view will also open the link URL in the Tranquility view in the current tab. Ctrl+Left Click will open the link URL in the Tranquility view in a new tab
If a web page has not completed loading fully, Tranquility will wait for it to complete loading before processing the document
Tranquility informs you when a web page has very little text content and reverts back to the original web page view. You can always force Tranquility to proceed anyway and show you the Tranquility view