AGN File

What are AGN files and how to open them

Are you having problems opening an AGN file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your AGN files.

What is an AGN file?

AGN files have multiple uses, and AUTOMGEN project is one of them. Read more about the other uses further down the page.

AUTOMGEN project

These AGN files contain the projects created in AUTOMGEN, an automation software with realistic 3D process simulation. AUTOMGEN uses PLC programming for electric, pneumatic, hydraulic, and digital electronic simulation. You can create local or Internet SCADA (Supervisory Control Data Acquisition) applications and 3D simulations. AUTOMGEN provides Beginner and Expert environments to give users the best experience when using this software.

How to open AGN files

Important: Different programs may use files with the AGN file extension for different purposes, so unless you are sure which format your AGN file is, you may need to try a few different programs.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Last updated: August 17, 2026

All known file formats using extension .AGN

While AUTOMGEN project is a popular type of AGN-file, we know of 2 different uses of the .AGN file extension. Different software may use files with the same extension for different types of data.

Psion S3a/3c/Siena Agenda

Psion S3a/3c/Siena Agenda files contain the saved "Agenda" data - the calendar entries, tasks, anniversaries, alarms and repeating events - from the Agenda application built into Psion Series 3a, 3c and Siena handhelds. These files serve as the persistent diary/todo database for that device, so when you open Agenda on the Psion, it reads this file to display your appointments, reminders and notes in the various views (day, week, year, list etc).

These files are written by the Agenda program on those Psion models. Typical workflows include: you run Agenda to enter or edit items; Agenda saves them into the .AGN file stored in the \AGN directory on the device; when used with desktop synchronization software (e.g. PsiWin on a PC), that .AGN file may be transferred for backup or merging with PC scheduling programs.

Agenda files are written in binary, starting with the ASCII header "AgendaFileType*" at byte offset 0. That header serves to identify the file as a Series 3a/3c/Siena Agenda file. Specific fields within the file track entry types, dates, repeat settings, alarms, text and other metadata.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

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