An ac1 file extension is related to the Unforgettable softwarer. An ac1 file contains reminder data.

There is one other file type using
the AC1 file extension!

ac1 icon.ac1 - SPICE AC/frequence domain output file

Detailed description

Software that open ac1 file

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AC1 file extension - Weaver Spider reminder data

What is ac1 file? How to open ac1 files?

File type specification:

Various data file type icon Various data file type

The ac1 file extension is associated with applications, such as Unforgettable developed by Giuseppe Buttafuoco.

Most likely some old format without support from developer. No further information could be found.

This ac1 file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

The default software associated to open ac1 file:

Unforgettable picture or screenshot

Giuseppe Buttafuoco logoUnforgettable  Microsoft Windows software

Company or developer:
Giuseppe Buttafuoco

Unforgettable is the reminder that keeps track of all your engagements. It is very easy to use. You have only to put in all the engagements data and how many days before you want to be warned. It can manage thousands of events.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .ac1 file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of recommended software applications associated to the .ac1 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 ac1 file, edit ac1 file, convert ac1 file, view ac1 file, play ac1 file etc. (if exist software for corresponding action in's database).

Unspecified and all other actions for computer programs working with ac1 file - Weaver Spider reminder data

Click on the software link for more information about Unforgettable. Unforgettable uses ac1 file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

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