ALCO file extension
The table below provides useful information about the .alco file extension. It answers questions such as:
- What is the .alco file?
- What program do I need to open a .alco file?
- How can the .alco file be opened, edited or printed?
- How can I convert .alco files to another format?
Table of Contents
- ✅ URL Manager Pro Data
- 🔄 .alco file converters
- 🚫 .alco file related errors
We hope you find this page helpful and a valuable resource!
1 extension(s) and 0 alias(es) found in database
✅ URL Manager Pro Data

The ALCO file is a URL Manager Pro Data. URL Manager Pro is a bookmark manager for Safari, Explorer, OmniWeb, Mozilla, Netscape, iCab, Camino, and Epic browsers.
Other types of files may also use the .alco file extension.
🚫 The .alco file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Is it possible that the filename extension is misspelled?
We found the following similar file extensions in our database:
🔴 Can't open a .alco file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows cannot open this file:
example.alco
To open this file, Windows needs to know what program you want to use to open it...
If you don't know how to set the .alco file association, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.
If you have helpful information about the .alco file extension, write to us!