Ext Ops Panel
Open dashboard

WebClass Plus

Chrome extension by Kusakabe Laboratory · Productivity · Education

A Chrome extension in Productivity · Education with 96 users, barely installed. Audience over the last 30 days: +13.

Specific sites only: 1 match pattern.

What the developer says, and 1 screenshot

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
96
Rating
5.0 (1 ratings)
Users, last 30 days
+13
Rating, last 30 days
Steady over 30 days
Version
1.3.1
Updated in the store
2026-07-28
Published
2025-06-12
Manifest
V3
Browser access
2 permissions, 1 site pattern

How it has moved

Users
+13 since 02.10
83-99 · 14 readings
  1. 2026-10-0891
  2. 2026-10-0995
  3. 2026-10-1098
  4. 2026-10-1396
  5. 2026-10-1695
  6. 2026-10-1792
  7. 2026-10-1896
  8. 2026-10-1994
  9. 2026-10-2096
  10. 2026-10-2199
  11. 2026-10-2297
  12. 2026-10-2898
  13. 2026-10-2999
  14. 2026-11-0196
Rating
unchanged since 02.10
reviewsrating 5.00 · 14 readings
  1. 2026-10-08reviews1rating5.00
  2. 2026-10-09reviews1rating5.00
  3. 2026-10-10reviews1rating5.00
  4. 2026-10-13reviews1rating5.00
  5. 2026-10-16reviews1rating5.00
  6. 2026-10-17reviews1rating5.00
  7. 2026-10-18reviews1rating5.00
  8. 2026-10-19reviews1rating5.00
  9. 2026-10-20reviews1rating5.00
  10. 2026-10-21reviews1rating5.00
  11. 2026-10-22reviews1rating5.00
  12. 2026-10-28reviews1rating5.00
  13. 2026-10-29reviews1rating5.00
  14. 2026-11-01reviews1rating5.00
Users
+21 since 31.08
74-99 · 27 readings
  1. 2026-08-3175
  2. 2026-09-0381
  3. 2026-09-0474
  4. 2026-09-0579
  5. 2026-09-0676
  6. 2026-09-0880
  7. 2026-09-0979
  8. 2026-09-1375
  9. 2026-09-1574
  10. 2026-09-2084
  11. 2026-09-2581
  12. 2026-09-2686
  13. 2026-09-2883
  14. 2026-10-0891
  15. 2026-10-0995
  16. 2026-10-1098
  17. 2026-10-1396
  18. 2026-10-1695
  19. 2026-10-1792
  20. 2026-10-1896
  21. 2026-10-1994
  22. 2026-10-2096
  23. 2026-10-2199
  24. 2026-10-2297
  25. 2026-10-2898
  26. 2026-10-2999
  27. 2026-11-0196
Rating
unchanged since 31.08
reviewsrating 5.00 · 27 readings
  1. 2026-08-31reviews1rating5.00
  2. 2026-09-03reviews1rating5.00
  3. 2026-09-04reviews1rating5.00
  4. 2026-09-05reviews1rating5.00
  5. 2026-09-06reviews1rating5.00
  6. 2026-09-08reviews1rating5.00
  7. 2026-09-09reviews1rating5.00
  8. 2026-09-13reviews1rating5.00
  9. 2026-09-15reviews1rating5.00
  10. 2026-09-20reviews1rating5.00
  11. 2026-09-25reviews1rating5.00
  12. 2026-09-26reviews1rating5.00
  13. 2026-09-28reviews1rating5.00
  14. 2026-10-08reviews1rating5.00
  15. 2026-10-09reviews1rating5.00
  16. 2026-10-10reviews1rating5.00
  17. 2026-10-13reviews1rating5.00
  18. 2026-10-16reviews1rating5.00
  19. 2026-10-17reviews1rating5.00
  20. 2026-10-18reviews1rating5.00
  21. 2026-10-19reviews1rating5.00
  22. 2026-10-20reviews1rating5.00
  23. 2026-10-21reviews1rating5.00
  24. 2026-10-22reviews1rating5.00
  25. 2026-10-28reviews1rating5.00
  26. 2026-10-29reviews1rating5.00
  27. 2026-11-01reviews1rating5.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 1 match pattern.

  • https://webclass.kosen-k.go.jp/webclass/*
  • See the address and title of every tab you have open tabs
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Kusakabe Laboratory.

Like this one

Listings the catalog judges closest in what they say they do.

  1. Better Blackboard Describes nearly the same job, smaller audience 53 users ★ 5.0
  2. AC3 — AI School Assistant Describes nearly the same job, smaller audience 13 users
  3. Canvas AI Assistant Describes nearly the same job, smaller audience 13 users ★ 5.0
  4. CanvasPro Describes nearly the same job, smaller audience 5 users
  5. Lorun Describes nearly the same job, smaller audience 4 users (last published figure)

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Want this mark on your extension in our catalog?

Verify that you are its author and you can show this mark on the card, with live banners for your site and README. How verification works

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

Connect it in a minute See what the panel does
Add a badge to your README or site

The badge shows the audience and rating from our last pass over the store and links back to this page.

Users and rating on Ext Ops Panel

Markdown

[![Users and rating on Ext Ops Panel](https://extops.dev/extensions/dkhdobjjmepbjlegchbojaemllidlmgk/badge.svg)](https://extops.dev/extensions/dkhdobjjmepbjlegchbojaemllidlmgk)

HTML

<a href="https://extops.dev/extensions/dkhdobjjmepbjlegchbojaemllidlmgk"><img src="https://extops.dev/extensions/dkhdobjjmepbjlegchbojaemllidlmgk/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built