Overview
What is CLEO?
Firefox extension that allows you to package as many extensions/themes as you desire into one installable .xpi file
In depth
A closer look at CLEO
CLEO is ana extension that will allow you to package myltiple extensions or themes into a single, installable .xpi file
Verdict
Should you download CLEO?
CLEO runs on
Windows 9X/ME/2K/XP/2003/Windows 10/11
and is available under the
Freeware
license
— the installer is 47 KB.
We’ve catalogued it under
Browsing Tools.
✓
Verified clean. Every CLEO build on SoftLookup is scanned for viruses, spyware, adware, trojans and backdoors. We re-test on every update.
Sponsored
At a glance
CLEO specifications
- Last updated
- Nov 19, 2025
- License
- Freeware
- Operating system
- Windows 9X/ME/2K/XP/2003/Windows 10/11
- File size
- 47 KB
- Price
- Free
- Page views
- 434
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