Cog - System Info Viewer

Name: Cog - System Info Viewer
Rating: 4.46 (327 reviews)
Author: François Beaufort

Display lots of useful hardware and network info

As of May 2026, Cog - System Info Viewer has 100,000 users and a 4.46/5 rating from 327 reviews in the Developer Tools category.

François Beaufort Developer Tools

Chrome Web Store ↗.crx

Users−50.0%

100.0K

100,000

Rating0%

4.46

327 reviews

Reviews+0.3%

327

Version

0.0.14

Manifest V2

90-day change · In the last 90 days this extension lost 100.0K users.

History

2 snapshots

Tracking since May 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
May 1, 2026	200.0K	4.46	326	0.0.14
May 30, 2026	200.0K	4.46	327	0.0.14
Now	100.0K	4.46	327	0.0.14

Permissions & access

Permissions: storagesystem.cpusystem.displaysystem.memorysystem.networksystem.storage
Host access: None declared

Screenshots

About

Just a simple Chrome App to showcase chrome.system.* APIs.

Check out public source at https://github.com/beaufortfrancois/cog-chrome-app

Changelog:

0.0.14:
- Show CPU temperature in Fahrenheit on click (Chrome OS only)
- Add display mode refresh rate in hertz.


0.0.13:
- Added CPU temperatures (Chrome OS only)

0.0.12 (works best with Chrome 42):
- Added window frame color

0.0.11:
- Fixed CPU Usage (again)

0.0.10:
- Fixed vertical scrolling.

0.0.9:
- Fixed High CPU Usage.

0.0.8:
- Added External and Internal Storage.

0.0.7:
- Fixed CPU Usage thanks to Christopher!