Are we e10s yet?

E10s runs web related content in background child processes.

To test an add-on:

  1. Confirm that the add-on works as expected in Firefox's Release channel before testing Nightly. :)
  2. Install Firefox Nightly.
  3. Install the add-on you would like to test.
  4. e10s is enabled by default in Firefox Nightly, but disabled in Firefox's other release channels: Developer Edition, Beta, and Release. When e10s is enabled, Firefox's tab tool tip is suffixed with "- e10s".
  5. Confirm that the add-on still works as expected with e10s in the Nightly channel.

# Overall reports

compatible 569
compatible-webextension 513
unknown 16,968
undefined 10
incompatible 2

Note: these are listed add-ons on AMO only. Hopefully unlisted can come soon. "undefined" refers to an error in the report. Other statuses are documented.

# Top add-on list

As ranked by number of users.

Name Compatible? [1] Shims [2] CPOW [3] Bugs [4]
# Adblock Plus
{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d} • 20,619,547 users
compatible Yes 2,820
# Video DownloadHelper
{b9db16a4-6edc-47ec-a1f4-b86292ed211d} • 4,452,660 users
compatible Yes 4,274,172 930788
# Microsoft .NET framework assistant
{20a82645-c095-46ed-80e3-08825760534b} • 2,409,532 users
error No 0
# Easy Screenshot
easyscreenshot@mozillaonline.com • 2,403,045 users
unknown Yes 1,914 1271462
# Firebug
firebug@software.joehewitt.com • 2,166,503 users
unknown Yes 0 1047248
# NoScript Security Suite
{73a6fe31-595d-460b-a920-fcc0f8843232} • 2,146,154 users
unknown Yes 2,277 1058542
# Ghostery
firefox@ghostery.com • 1,464,992 users
compatible-webextension Yes 140,320 1101189
# Greasemonkey
{e4a8a97b-f2ed-450b-b12d-ee082ba24781} • 1,302,204 users
compatible Yes 0 1048164
# DownThemAll!
{DDC359D1-844A-42a7-9AA1-88A850A938A8} • 1,294,978 users
unknown Yes 63,631 1188835
# uBlock Origin
uBlock0@raymondhill.net • 1,154,406 users
compatible Yes 26,264
# Adblock Plus Pop-up Addon
adblockpopups@jessehakanen.net • 1,127,969 users
unknown Yes 0 1186548
# Download YouTube Videos as MP4
{b9bfaf1c-a63f-47cd-8b9a-29526ced9060} • 1,075,158 users
compatible No 0 1047669
# Flash Video Downloader - YouTube HD Download [4K]
artur.dubovoy@gmail.com • 1,066,245 users
unknown Yes 149,978 946594
# Web of Trust, MyWOT/WOT: Website Reputation Rating
{a0d7ccb3-214d-498b-b4aa-0e8fda9a7bf7} • 937,486 users
unknown Yes 213,085 1102532
# FlashGot Mass Downloader
{19503e42-ca3c-4c27-b1e2-9cdb2170ee34} • 848,724 users
unknown Yes 379,440 1161597
# Tab Mix Plus
{dc572301-7619-498c-a57d-39143191b318} • 842,022 users
compatible No 12,818 1185672
# Google Translator for Firefox
translator@zoli.bod • 798,165 users
unknown Yes 369 1166434
# LastPass Password Manager
support@lastpass.com • 745,753 users
compatible Yes 414,564 1008768
# YouTube Video and Audio Downloader
feca4b87-3be4-43da-a1b1-137c24220968@jetpack • 727,036 users
compatible Yes 33,480
# Test Pilot (old one)
testpilot@labs.mozilla.com • 707,655 users
error Yes 6,492 999241
# 1-Click YouTube Video Download
YoutubeDownloader@PeterOlayev.com • 694,409 users
unknown Yes 254,891 1047422
# Download Flash and Video
{bee6eb20-01e0-ebd1-da83-080329fb9a3a} • 682,182 users
unknown Yes 517,244 1177092
# Element Hiding Helper for Adblock Plus
elemhidehelper@adblockplus.org • 655,424 users
unknown Yes 315 1041071
# Flashblock
{3d7eb24f-2740-49df-8937-200b1cc08f8a} • 595,268 users
unknown Yes 16,809 946932
# anonymoX
client@anonymox.net • 549,250 users
unknown No 2,690
# Flagfox
{1018e4d6-728f-4b20-ad56-37578a4de76b} • 525,145 users
compatible Yes 0 1188837
# IE Tab V2 (Enhanced IE Tab)
{1BC9BA34-1EED-42ca-A505-6D2F1A935BBB} • 515,934 users
unknown Yes 114,460
# YouTube mp3
info@youtube-mp3.org • 514,302 users
unknown Yes 0
# Lightbeam for Firefox
jid1-F9UJ2thwoAm5gQ@jetpack • 509,680 users
compatible Yes 0 1053007
# Adblock Edge
{fe272bd1-5f76-4ea4-8501-a05d35d823fc} • 497,253 users
unknown Yes 278,208 1048057
# Web Developer
{c45c406e-ab73-11d8-be73-000a95be3b12} • 493,583 users
unknown Yes 9,995
# FireFTP
{a7c6cf7f-112c-4500-a7ea-39801a327e5f} • 490,402 users
compatible Yes 19,542
# Stylish
{46551EC9-40F0-4e47-8E18-8E5CF550CFB8} • 481,414 users
compatible Yes 204
# BetterPrivacy-signed
{d40f5e7b-d2cf-4856-b441-cc613eeffbe3} • 480,695 users
unknown Yes 0
# Classic Theme Restorer
ClassicThemeRestorer@ArisT2Noia4dev • 436,611 users
compatible No 0
# EPUBReader
{5384767E-00D9-40E9-B72F-9CC39D655D6F} • 424,322 users
compatible Yes 0 1074463
# Garmin Communicator
{195A3098-0BD5-4e90-AE22-BA1C540AFD1E} • 418,313 users
unknown No 0
# Ant Video Downloader
anttoolbar@ant.com • 407,227 users
unknown Yes 148,369 1177151
# YouTube Flash Player
jid1-HAV2inXAnQPIeA@jetpack • 402,546 users
compatible Yes 0
# iMacros for Firefox
{81BF1D23-5F17-408D-AC6B-BD6DF7CAF670} • 397,613 users
compatible Yes 0 1147327
# Evernote Web Clipper
{E0B8C461-F8FB-49b4-8373-FE32E9252800} • 391,479 users
unknown Yes 133,836 1106708
# Error fetching data from AMO
firefoxdav@icloud.com • 383,932 users
error Unknown 0
# Speed Dial
{64161300-e22b-11db-8314-0800200c9a66} • 378,805 users
unknown Yes 14,080 1075613
# S3.Google Translator
s3google@translator • 369,330 users
incompatible Yes 129,390
# FireGestures
firegestures@xuldev.org • 363,752 users
compatible Yes 2,475 1100312
# User Agent Switcher
{e968fc70-8f95-4ab9-9e79-304de2a71ee1} • 343,383 users
unknown No 0
# Provider for Google Calendar
{a62ef8ec-5fdc-40c2-873c-223b8a6925cc} • 338,360 users
unknown Unknown 0 1003653
# Xmarks Sync
foxmarks@kei.com • 337,623 users
unknown Yes 27,306
# Google Translate, ImTranslator, Dictionary, TTS
{9AA46F4F-4DC7-4c06-97AF-5035170634FE} • 336,652 users
compatible Yes 16,625 1138107
# Download Statusbar
{D4DD63FA-01E4-46a7-B6B1-EDAB7D6AD389} • 331,909 users
unknown Unknown 0
# Easy Youtube Video Downloader Express
{b9acf540-acba-11e1-8ccb-001fd0e08bd4} • 326,119 users
compatible No 0
# Personas Plus
personas@christopher.beard • 312,913 users
compatible No 0
# ProxTube - Unblock YouTube
ich@maltegoetz.de • 311,056 users
compatible Yes 147,768
# YouTube Flash Video Player
{f3bd3dd2-2888-44c5-91a2-2caeb33fb898} • 299,809 users
compatible Yes 3,982
# Session Manager
{1280606b-2510-4fe0-97ef-9b5a22eafe30} • 288,482 users
unknown Yes 0
# FoxyProxy Standard
foxyproxy@eric.h.jung • 286,381 users
unknown Yes 1,788 1106486
# YouTube High Definition
{7b1bf0b6-a1b9-42b0-b75d-252036438bdc} • 284,115 users
compatible Yes 106,743
# Disconnect
2.0@disconnect.me • 283,780 users
unknown Yes 99,674 10662171100400
# Mozilla Firefox hotfix
firefox-hotfix@mozilla.org • 283,311 users
unknown Unknown 0
# Full Web Page Screenshots (♥♥♥♥♥)
{0b457cAA-602d-484a-8fe7-c1d894a011ba} • 279,529 users
compatible Unknown 0
# NetVideoHunter
netvideohunter@netvideohunter.com • 278,207 users
unknown No 13,680 1138111
# VKontakte.ru Downloader (music/videos/photos @ VK)
vk@sergeykolosov.mp • 275,379 users
unknown Yes 126,636
# QuickJava
{E6C1199F-E687-42da-8C24-E7770CC3AE66} • 274,114 users
compatible No 0 1047797
# ColorZilla
{6AC85730-7D0F-4de0-B3FA-21142DD85326} • 273,013 users
unknown Unknown 0 1114953
# Video Downloader professional
ffext_basicvideoext@startpage24 • 258,678 users
unknown Yes 62,316
# ColorfulTabs
{0545b830-f0aa-4d7e-8820-50a4629a56fe} • 250,595 users
unknown Yes 116 1114950
# Reddit Enhancement Suite
jid1-xUfzOsOFlzSOXg@jetpack • 248,996 users
unknown Yes 0 1046044
# Download Status Bar
{6c28e999-e900-4635-a39d-b1ec90ba0c0f} • 240,495 users
compatible No 0
# NoSquint
nosquint@urandom.ca • 235,608 users
unknown Yes 6,812 1043297
# MinimizeToTray revived
mintrayr@tn123.ath.cx • 229,910 users
compatible No 4,615
# LookOut
lookout@aron.rubin • 210,662 users
unknown Unknown 0
# IE Tab
{77b819fa-95ad-4f2c-ac7c-486b356188a9} • 204,934 users
unknown Yes 31,395
# Blur
donottrackplus@abine.com • 203,758 users
compatible Yes 0 1177475
# Public Fox
{9AA46F4F-4DC7-4c06-97AF-6665170634FE} • 201,718 users
unknown Unknown 306
# BlockSite
{dd3d7613-0246-469d-bc65-2a3cc1668adc} • 201,017 users
unknown Yes 9,224
# SQLite Manager
SQLiteManager@mrinalkant.blogspot.com • 199,810 users
unknown No 0
# Awesome Screenshot Plus - Capture, Annotate & More
jid0-GXjLLfbCoAx0LcltEdFrEkQdQPI@jetpack • 198,208 users
compatible-webextension Yes 697,695
# Password Exporter
{B17C1C5A-04B1-11DB-9804-B622A1EF5492} • 197,009 users
unknown No 0
# xThunder
xthunder@lshai.com • 192,558 users
unknown Yes 4,500
# All-in-One Sidebar
{097d3191-e6fa-4728-9826-b533d755359d} • 189,259 users
compatible Yes 0
# Speed Dial [FVD] - New Tab Page, Sync...
pavel.sherbakov@gmail.com • 170,148 users
unknown Yes 10,115 1037197
# Mozilla Archive Format, with MHT and Faithful Save
{7f57cf46-4467-4c2d-adfa-0cba7c507e54} • 170,071 users
unknown Yes 24,813
# RightToClick
{cd617375-6743-4ee8-bac4-fbf10f35729e} • 167,915 users
unknown Yes 27,002
# SaveFrom.net helper all-in-1 / youtube downloader
helper@savefrom.net • 159,826 users
compatible Yes 259,464 1108725
# ReloadEvery
{888d99e7-e8b5-46a3-851e-1ec45da1e644} • 159,217 users
unknown Yes 1,624 1047789
# ScrapBook
{53A03D43-5363-4669-8190-99061B2DEBA5} • 156,541 users
unknown Yes 0 1058525
# Live HTTP Headers
{8f8fe09b-0bd3-4470-bc1b-8cad42b8203a} • 153,516 users
unknown No 0
# Image Zoom
{1A2D0EC4-75F5-4c91-89C4-3656F6E44B68} • 151,026 users
unknown Yes 12,306 1121271
# Quick Locale Switcher
{25A1388B-6B18-46c3-BEBA-A81915D0DE8F} • 149,681 users
unknown Yes 4,928
# Extra Folder Columns
extra-cols@jminta_gmail.com • 140,264 users
unknown Unknown 0
# Youtube Downloader 4K - Video Downloader
paulsaintuzb@gmail.com • 139,306 users
unknown Yes 26,082
# Text Link
{54BB9F3F-07E5-486c-9B39-C7398B99391C} • 138,952 users
compatible Yes 1,965 1106535
# Tab Scope
tabscope@xuldev.org • 137,334 users
compatible Yes 4,437 1037197
# DuckDuckGo Plus
jid1-ZAdIEUB7XOzOJw@jetpack • 125,562 users
compatible Yes 268,983 1213112
# Error fetching data from AMO
amznUWL2@amazon.com • 123,092 users
error Unknown 19,032
# Modify Headers
{b749fc7c-e949-447f-926c-3f4eed6accfe} • 116,430 users
unknown No 0
# Error fetching data from AMO
printPages2Pdf@reinhold.ripper • 116,414 users
error Yes 0
# Error fetching data from AMO
isreaditlater@ideashower.com • 115,910 users
error Yes 11,840
# Error fetching data from AMO
{5C655500-E712-41e7-9349-CE462F844B19} • 94,055 users
error Unknown 9,405
# Forecastfox Weather
{0538E3E3-7E9B-4d49-8831-A227C80A7AD3} • 93,052 users
unknown Unknown 0
# Error fetching data from AMO
youtubeunblocker@unblocker.yt • 90,315 users
error Yes 156
# FastestFox - Browse Faster
smarterwiki@wikiatic.com • 90,042 users
unknown No 0 1046426

# Footnotes

  1. This is checking multi-process compat. flag in the add-on as listed on AMO. Error means its not listed on AMO.
  2. This is shim data returned to telemetry (see the python notebook).
  3. This is CPOW data returned to telemetry (see the python notebook).
  4. This is a manual list of bugs assigned to this addon in Bugzilla. Maintained in data.json.