Open File Database

The ACE extension is a proprietary data compression format developed by
E-Merge GmbH.

This file type is a binary compressed MIME application / x-ace-compressed
type.

The application to compress / decompress ACE files is
WinAce, maintained by e-merge GmbH, compatible with Microsoft
Windows.

Also, there are ACE file decompression programs, which are free for many
platforms (such as macOS and Linux).

To open and work with files with the ACE extension, you need one of the
following software packages:

• WinACE (Available
  from third party servers)
• WinRAR
• ZipGenius

The RGA file extension is associated with the Residual Gas Analyzer
device.

That is why the acronym: Residual Gas Analyzer, RGA

The RGA format stores data that comes from a hardware device with the
same name.

A Residual Gas Analyzer is a gaseous mass spectrometer, designed for
process control and contamination monitoring in vacuum systems.

The basic principle of operation is through a measurement cell, which is
a vacuum meter with hot cathode ionization.

Electrons are emitted from the hot filaments and are accelerated towards
the source through an electrical shunt.

The fast-moving electrons collide with the gas molecules, dislodging and
ionizing the electrons, and the positive gas ions in turn transmit their
current to the collector of negatively charged ions.

The ion current is proportional to the pressure and the current, this
creates a complex magnetic field, which, by varying the voltage, controls
the magnetic field.

The RGA file records the data collected by the described device to be
read and analyzed later with desktop software, for example LEYSPEC.

RGA uses two implementations, which are open ion source (OIS) or closed
ion source (CIS).

Software for working with an RGA file

• Leybold LEYSPEC

DEF extension files can take various application formats, some of them
below

M.U.G.E.N.

In this first case, the DEF file is a game data file used by M.U.G.E.N.,
a sprite-based game engine used to make 2D fighting games.

More about M.U.G.E.N.

It is a freeware 2D fighting game engine designed by Elecbyte.

Content is created by the community, and thousands of characters, both
original and from popular fiction, have been created.

It was programmed in C through the Allegro library.

The latest versions of the engine use the SDL library.

The DEF file contains the definition of a character, that’s where the
acronym comes from, including the character’s name and version information
and the character specification files used by the engine.

Smartware II

In this case, the DEF file is a database and spreadsheet format used by
the SmartWare II database software.

More about Smartware II

SmartWare II allows users to create or modify a switching strategy and
send it to a control.

It also allows you to read the current configuration, save or load a
configuration to or from a file, monitor control operation in real time,
and retrieve historical data.

IOBit Malware Fighter

In the latter case, the DEF file is a file used by IObit Malware Fighter,
a program used to remove malware and spyware from the PC.

IObit Malware Fighter is one of the most widely used antivirus packages
worldwide, however, it has received negative reviews on certain occasions.

The DEF file stores virus definitions used to identify and remove malware
from your computer.

DEF files use the file names core000.def, core001.def, core002.def, etc.
They are stored in the db\ directory of the IObit Malware Fighter
installation.

Microsoft VisualStudio

In this case, the DEF file lists the exports and attributes of a program
to be linked by an application linker.

The DEF is used in software development when creating a DLL.

DEF files are used by Microsoft Visual C++, a component of Microsoft
Visual Studio, as well as other C++ development software.

More about Visual Studio

This is Microsoft’s flagship integrated development environment.

It is used to develop any type of software, due to the large number of
languages ​​and scripts it handles.

Among his development examples are computer programs, websites, web apps,
web services and mobile apps.

Software to open and work with a DEF file

• Elecbyte
  M.U.G.E.N.
• Smartware II
• IObit Malware
  Fighter
• Microsoft Visual Studio

A MOBI extension file is an electronic book saved in the MOBI format, a
format originally used by the Mobipocket Reader but now supported by a
number of different readers.

Mobipocket Reader was developed by Mobipocket SA, which was a French
company that also created the MOBI e-book file format for mobile phones,
personal digital assistants, and desktop operating systems.

The MOBI file contains an electronic book and may incorporate copyright
protection to prevent unauthorized copying or viewing.

MOBI files are compatible with various eReaders, tablets, PDAs, and
desktop computing applications.

Amazon now owns the MOBI format, which means that Amazon’s e-book
formats, including AZW, AZW1, and AZW3, use the MOBI format but
incorporate a proprietary DRM scheme.

It should be noted that Amazon’s new Kindle Format 8 (KF8) is based on
the MOBI format.

MOBI and KF8 support many new formatting and layout options, including
HTML5 and CSS3 content and embedded fonts.

KF8-formatted e-books are saved and distributed as MOBI files or AZW3
files, depending on the device downloading the e-book.

E-book authors can compile KF8 books using Amazon’s KingleGen software
and save them in MOBI format.

Prior to distribution, authors can preview KF8 eBooks on a Mac or PC
using Amazon’s Kindle Previewer software.

Mobipocket e-books also use the PRC extension.

Software to open and work with MOBI files

• Amazon
  Kindle for PC
• Calibre
• Adobe RoboHelp

Files of extension 1 can find various applications, here are some of
them:

File Splitter

The file extension 1 is used, in principle, by the File Splitter software
to assign a number to a volume of a divided file.

File Splitter is an application for Windows that allows you to either
automatically divide or join the different parts of a large file into
smaller and more manageable parts, in order to share them.

This being the case, when a large file is created and the user wants to
split the file into smaller volumes, then file extension 1 is given to the
first file in the split file.

Mozilla Firefox

In some cases, Mozilla Firefox will also use the extension 1, giving it
to files that store data about cookies, images, and pop-up permissions.

Mozilla Firefox is a free and open source web browser developed by
Mozilla Corporation.

Unix

In this section, a file 1 is a manual page used by the Man utility, a
Unix program used to view user manuals.

Man is a Unix-based systems tool used to document and learn about
commands, files, system calls, etc., on a GNU / Linux operating system.

This being the case, file extension 1 contains level 1 user manuals
stored in plain text and separated into several segments and delimited by
standard markers.

Since Unix man pages are stored in plain text format, they can be created
and edited with any text editor, for example GNU Emacs.

Software for working with files 1

• File Splitter
• Mozilla Firefox
• GNU Emacs

An EDB file extension is a database created by Microsoft Exchange Server.

Microsoft Exchange Server is a mail server and calendar server developed
by Microsoft. Runs exclusively on Windows Server operating systems.

In other words, the EDB file serves as the primary repository for
Exchange-saved mailbox data.

On the other hand, the EDB file stores both in-process and stored
non-SMTP messages, since it is formatted using a b-tree structure, which
includes a top-level node and many child nodes.

The EDB files used for the Exchange information store are identified as
PRIV1 and PUB1, and eventually each of them has a corresponding STM file
that contains SMTP messages.

Software for working with EDB files

EDB files are not designed to be opened manually by the user, since they
are directly referenced by the software whose link you will find below:

• Microsoft
  Exchange Server

An MSO file is a macro reference file created by saving a Microsoft Office document as a web page.
It contains information about macros and OLE objects (Object Linking and Embedding) included in the original file and can be referenced by the created web page as a style sheet.
MSO files can be opened with a text editor, but this will be useless as the characters will be unreadable due to the content being encoded.
If you see the MSO file as an email attachment, do not open it as it most likely contains a virus or other suspicious program.

Inline E-mail Attachment

File sent as Microsoft Word 2000 email attachments; often called
‘Oledata.mso’, it contains information that allows the attachment to be
rendered in the email message.

Open MSO File on Windows OS

• Look for an MSO file you need to open in Windows Explorer and double-click on it
• If the file doesn’t open automatically and you see a “Windows can’t open a file” message then you should search for a program which can open MSO file
• If you have a program which can open MSO file installed on your computer then launch that program and select “File” and then “Open” or similar options from its menu to open the MSO file
• If you don’t have the program installed then you need to try searching for “MSO wiki”, “how to open MSO file” in the search engine.
• Once you find the application, install it on your computer
• After the program is installed double-click on the MSO file to open it

File extensions are used by Windows operating system to specify what kind of information is stored in the file. Every file in Windows OS needs to have file extension and file extensions are used by Windows to determine which application it should use to open the file. Every application installed on Windows OS places information about which extensions it could open into the Windows registry and Windows uses this information to determine which application it should launch when user double-clicks on the file. If application which can open MSO file is not installed, then Windows will show ‘Windows can’t open MSO file’ message and buttons to either select an application on the computer which can open the file or to search the web for the application which can open MSO file.