Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of RSS Sage-Like

RSS Sage-Like by arielg

A fast and lightweight sidebar-based feed reader. Supports Atom, RSS, JSON, and RDF feeds with customizable UI and seamless integration with your browser’s bookmarks and sync capabilities.

4.6 (25 reviews)4.6 (25 reviews)
548 Users548 Users
You'll need Firefox to use this extension
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
Sage-Like SidebarFeed PreviewSubscribe Using Sage-LikeFeed DiscoveryFeeds Context MenuFeed-items (articles) Context MenuSage-Like Options PageTree Feeds FilteringSage-Like
About this extension
Sage-Like is a simple, sidebar based feed reader (Atom, RSS, JSON and RDF). Like its add-on predecessors, Sage by Peter Andrews and the Sage++ by Higmmer, I did my best to keep it lightweight and fast.

◼ FEATURES
 ● A sidebar based display.
 ● Feed discovery from the sidebar and from the address bar.
 ● Customized discovery of "hidden" RSS feeds on YouTube, Reddit, DeviantArt,
  Pinterest and Behance.
 ● Integrated with the browser's native bookmarks.
 ● Feeds automatically sync across your devices when using Firefox Sync.
 ● Fully customizable tree view. Add/Edit/Delete/Copy/Paste/Drag-n-drop directly
  in the sidebar.
 ● Various filtering capabilities to the tree feeds (filter by title, URL or status).
 ● Context menus for feeds and for feed-items (articles) offer more actions.
 ● Support for middle-click, ctrl-click & shift-click in the feed-items list.
 ● Rendered Feed Preview via middle-click or context menu (support custom
  style sheet).
 ● Support for import & export feed subscriptions using an OPML file.
 ● Customizable UI font & colors.
 ● Support Manifest V3.

◼ MANIFEST VERSION
Sage-Like v3.2.2 is the latest version supporting Manifest V2, available on the extension's version history page: https://addons.mozilla.org/en-US/firefox/addon/sage-like/versions

◼ PERMISSION JUSTIFICATION
 ● 'Read and modify bookmarks' – Integration with the browser's native
  bookmarks.
 ● 'Get data from the clipboard' – Support for Copy/Paste operations in the
  sidebar.
 ● 'Input data to the clipboard' – Support for Copy/Paste operations in the
  sidebar.
 ● 'Download files and read and modify the browser’s download history' –
  Exporting feeds to a file (OPML).
 ● 'Access browsing history' – Managing feed state (read/unread).
 ● 'Access browser tabs' – Opening feed articles, feed Previews, etc.
 ● 'Access your data for all websites' – Feed fetching and feed discovery.
 ● "storage" – Storing extension preferences.
 ● "webRequest" – Intercepting clicks on RSS links to display feed previews.
 ● "webRequestBlocking" – Intercepting clicks on RSS links to display feed
  previews.
 ● "menus" – Try to open page links in Feed Preview from context menu.

◼ CUSTOM CSS FILES
A selection of custom CSS files for the Feed Preview page, provided as ready-to-use styles or as examples for customization. Available on Mozilla’s Discourse forum: https://discourse.mozilla.org/t/support-sage-like-sidebar-based-rss-feed-reader/43383/18

◼ SUPPORT & FEEDBACK
For assistance, troubleshooting, or feedback, visit the support page on Mozilla’s Discourse forum: https://discourse.mozilla.org/t/support-sage-like-sidebar-based-rss-feed-reader/43383

◼ SUBMIT AN ISSUE
For bugs or feature requests, please submit an issue on the GitHub repository: https://github.com/arielgee/Sage-Like/issues. When reporting a bug, include your browser version, extension version, and detailed steps to reproduce the issue.
Rated 4.6 by 25 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
18
4
5
3
2
2
0
1
0
Read all 25 reviews
Permissions and dataLearn more

Required permissions:

  • Read and modify bookmarks
  • Get data from the clipboard
  • Input data to the clipboard
  • Download files and read and modify the browser’s download history
  • Access browsing history
  • Access browser tabs

Optional permissions:

  • Access your data for all web sites
More information
Add-on Links
  • Support site
Version
3.12
Size
237.99 kB
Last updated
21 days ago (21 Jul 2025)
Related Categories
  • Feeds, News & Blogging
  • Bookmarks
Licence
GNU General Public Licence v3.0 only
Version History
  • See all versions
Add to collection
Report this add-on
Support this developer

The developer of this extension asks that you help support its continued development by making a small contribution.

Contribute now

Release notes for 3.12
Update 3.12: Fixed regression where sidebar was not properly initialized on startup.

Changes
  • Added a new color input to "Sidebar colors" in the Options page, allowing to set a custom color for sidebar icons; the original 7 predefined colors are now labeled "Classic icon color".
  • Fixed an issue with background feed monitoring where the alarm was not properly managed.
  • Fixed inconsistent time format display in the Options page.
  • Changed UI terminology from "Check feed" to "Refresh feed".
  • Revised several labels in the Options page for improved clarity and more accurate descriptions of their behavior.
  • Applied minor fixes, UI adjustments, and general code improvements.
More extensions by arielg
  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike Licence v3.0 or any later version.