.HM3 File Extension

EC Software
File Type:
Help & Manual 3 Project

Having trouble opening .hm3 extension? Don't panic! This page explains what hm3 files are as well as suggests programs you may use to open hm3 files. You can download these programs through this page.

What is a HM3 file?

Hm3 file extension has Help & Manual 3 Project file type, developed by EC Software, which is associated with the "data files" category.

Help & Manual 3 is a tool for creating help documentation. Windows help documentation projects saved in this program receive the .HM3 extension. They include pages with help information in the RTF text. You can export HM3 files to formats like .HLP and .CHM.

To learn how you can open the given file, read the information below.

hm3 file icon
EC Software
File Type:
Help & Manual 3 Project
Data Files

How to open HM3 file?

Double click the hm3 file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .hm3 extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the hm3 extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the hm3 file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open HM3 files

  • Windows Windows
    • EC Software Help & Manual EC Software Help & Manual

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the hm3 file as well. Download Universal File Viewer for your OS.

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