Files with ass file extension are used by the ASS I/O program. They include some various archive data without compression.

There are 3 other file types using
the ASS file extension!

empty icon.ass - Advanced SubStation Alpha subtitles

empty icon.ass - Assembler/Disassembler 68HC11 file

empty icon.ass - Tom Clancy's Splinter Cell: Blacklist game data

Detailed description

Software that open ass file

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ASS file extension - ASS I/O archive

What is ass file? How to open ass files?

File type specification:

Various data file type icon Various data file type

The ass file extension is associated with the ASS I/O a programmers utility to pack multiple files into one file developed by Nullsoft.

The ass file contains data archive without compression. ASS I/O is obsolete product.

The default software associated to open ass file:

Nullsoft, Inc. logoASS I/O  Microsoft Windows software

Company or developer:
Nullsoft, Inc.

ASS I/O is a programmers utility to pack multiple files into one file. ASS I/O consists of two parts. The first part, packass.exe, creates an .ASS file from multiple source files. The other part, assio.c, is linked with your application to support reading from the .ASS file. It is obsolete product.

Help how to open:

Use ASS I/O to open the *.ass extension files.

How to convert:

Probably cannot be converted to anything else.

List of software applications associated to the .ass file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open ass file, edit ass file, convert ass file, view ass file, play ass file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting ass files.

Software that open ass file - ASS I/O archive

Programs supporting the exension ass on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about ASS I/O for open ass file action.

Microsoft Windows:

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