Open Source Web Extensions

New Tab

  • Epiboard – Stars: 220 – Updated: 4/2020 – Reviewed: 6/2020.
    • New Tabs are widgetized, can add weather, RSS feeds, downloads, sessions, etc. Unfortunately, does not appear to offer a todo list or notes option.
  • Humble New Tab Page – Stars: 355 – Updated: 2/2019 – Reviewed: 6/2020.
    • Allows one to add links to new tab.
  • nightTab – Stars: 397 – Updated: 6/2020 – Reviewed: 6/2020.
    • Primarily allows one to create a new tab page that has links on it, these links can be grouped.
  • Tabliss – Stars: 537 – Updated: 5/2020 – Reviewed: 6/2020.
    • Written in TypeScript, React, and Redux. Very similar to Momentum.
  • Markdown New Tab – Stars: 729 – Updated: 1/2020 – Reviewed: 8/2020.
    • Allows one to create notes in markdown that display visually when not in edit mode, includes ability to make checklists.

Bookmarks

  • Floccus – Stars: 1.8k – Updated: 11/2020 – Checked: 12/2020*
    • Sync bookmarks using any file sync software, quite popular.
  • unmark – Stars: 1.4k – Updated: 11/2020 – Checked: 12/2020.*
    • Todo’s for bookmarks. Note that the above link is for the web app side. The extension side hasn’t been updated since 2014.
  • Raindrop.io Browser Extension – Stars: 439 – Updated: 4/2020 – Checked: 9/2020.*
  • Bookmark Search – Stars: 89 – Updated: 8/2018 – Checked: 12/2020
    • A popular extension for searching one’s bookmarks.
  • Chrome Better Bookmark – Stars: 41 – Updated: 4/2017 – Checked: 12/2020
    • Another popular extension for managing bookmarks.
  • Bookmark Folder Suggester – Stars: 7 – Updated: 3/2018 – Checked: 12/2020.
  • Bookmarks Manager – Stars: 105 – Updated: 10/2018 – Checked: 12/2020.
    • Quite popular.
  • Popup My Bookmarks – Stars: 74 – Updated: 12/2020 – Checked: 12/2020.
    • Quite popular bookmark manager.
  • Quick Bookmark Cleaner – Stars: 30 – Updated: 9/2018 – Checked: 12/2020
  • Time Capsule – Stars: 20 – Updated: 6/2019 – Checked: 12/2020
    • Reopens bookmarks at a future scheduled date.
  • Chrome Bookmark Search – Stars: 89 – Updated: 8/2018 – Checked: 12/2020.
    • Popular.
  • Chrome Minimal Bookmarks Tree – Stars: 28 – Updated: 11/2020 – Checked: 12/2020.
    • Fairly popular.
  • Progress Bookmark / smartBookmark – Stars: 0 – Updated: 3/2016 – Checked: 12/2020.
    • Saves the location on a page you were at when bookmarked.
  • Document Bookmarks – Stars: 38 – Updated: 6/2018 – Checked: 12/2020.
    • Allows one to add comments to bookmarks.
  • webmarks – Stars: 48 – Updated: 6/2020 – Checked: 12/2020.*
    • This isn’t actually an extension, it’s a web app…but it implements bookmarking using remoteStorage, which may be useful to web extension developers.

Block Content

  • Hohser – Stars: 44 – Updated: 12/2020 – Checked: 12/2020.
  • uBlock* – Stars: 8k – Updated: 12/2019 – Checked: 12/2020.
  • uBlackList – Stars: 628 – Updated: 12/2020 – Reviewed: 12/2020.*
    • Blocks specific sites from appearing in Google’s search results.
  • I Hate Content Farms – Stars: 175 – Updated: 6/2018 – Checked: 12/2020.
    • For blocking specific content farm sites.
  • Remove W3Schools – Stars: 64 – Updated: 10/2020 – Checked: 12/2020.
  • Website Blocker for Chrome Extension – Stars: 76 – Updated: 1/2020 – Checked: 12/2020.

Tab Management

  • The Great Suspender – Stars: 3.8k – Updated: 10/2020 – Checked: 12/2020.*
    • One of the most popular plugins, for tab management.
  • Tabio – Stars: 185 – Updated: 8/2018 – Checked: 12/2020.
  • Tab Fern – Stars: 95 – Updated: 12/2020 – Checked: 12/2020.
  • Tabulator – Stars: 123 – Updated: 1/2019 – Checked: 12/2020.
    • Save open tabs to lists which can be reopened later.
  • Chrome Extension Tabs Queue – Stars: 50 – Updated: 4/2020 – Checked: 12/2020.
  • Tab Ahead Extension – Stars: 81 – Updated: 12/2020 – Checked: 12/2020.
    • “[H]elps you to quickly find open tabs by title and URL.”

Comments/Annotations/Highlighting

  • Dokieli – Stars: 562 – Updated: 12/2020 – Checked: 12/2020.*
    • “clientside editor for decentralised article publishing, annotations and social interactions.”
  • Hypothesis – Stars: 202 – Updated: 9/2020 – Checked: 9/2020.*
  • Super Simple Highlighter – Stars: 67 – Updated: 7/2019 – Checked: 12/2020.

Extension Management

  • Extensity – Stars: 202 – Updated: 9/2020 – Checked: 12/2020.*
    • Allows one to quickly enable/disable Chrome extensions.
  • One Click Extensions Manager – Stars: 58 – Updated: 9/2020 – Checked: 12/2020.
    • Uses Svelte.

Browser History

  • Memex – Stars: 2.6k – Updated: 9/2020 – Reviewed: 9/2020.**
  • Falcon – Stars: 1.6k – Updated: 5/2020 – Reviewed: 9/2020.
  • History Master – Stars: 349 – Updated: 9/2020 – Checked: 12/2020.
    • Visualizes history, syncs across browsers, repo has been archived.
  • Enhanced History for Chrome – Stars: 94 – Updated: 7/2020 – Checked: 12/2020.
    • A fork of Chrome Better History, which was hijacked.
  • Chrome Export History – Stars: 69 – Updated: 4/2018.
    • As JSON or CSV.

URL Modification

Mark as Read

Twitter

  • Refined Twitter – Stars: 1.3k – Updated: 7/2019 – Checked: 9/2020.
  • Productive Twitter – Stars: 143 – Updated: 10/2020 – Checked: 12/2020.
    • Written by Sarah Drasner.
  • BetterTweetDeck – Stars: 523 – Updated: 10/2020 – Checked: 12/2020.

GitHub

  • Octotree – Stars: 20.5k – Updated: 9/2020 – Checked: 9/2020.
  • Refined GitHub – Stars: 12.5k – Updated: 9/2020 – Checked: 9/2020.
  • Github Stars Manager – Stars: 178 – Updated: 5/2018 – Checked: 12/2020.
  • Like on GitHub – Stars: 213 – Updated: 5/2018 – Checked: 9/2020.

Archiving

Web Developer Tools

Security

  • Buttercup – Stars: 161 – Updated: 12/2020 – Checked: 12/2020 – Credentials manager.
  • Bitwarden – Stars: 1.9k – Updated: 9/2020 – Checked: 9/2020.
  • Sputnik – Stars: 110 – Updated: 10/2019 – Checked: 12/2020.

Other