Jul 20, 2023

Assistive technology ATK bridge (Linux CentOS ${LINUX_DIST_VER})

This is the Gnome Accessibility Project’s Assistive Technology Service Provider Interface. It allows accessibility applications and assistive technologies to announce their respective existence to each other.

This port contains the GTK+ module needed to interface with the SPI framework.

This article is on a component of FreeBSD called Linux C7 At Spi2 Atk, a module that plays an essential role in creating accessibility features for software applications.


The Linux C7 At Spi2 Atk is a not so widely-known feature in the FreeBSD ports collection, that, however, plays a crucial role behind the scenes. While its name might seem obscure, a closer look at this port reveals a highly capable module, significantly contributing to software accessibility.

In the software development world, accessibility is entirely about making software usable by all individuals regardless of any physical impairments. Therefore, understanding and enabling the Linux C7 At Spi2 Atk port is key when you want to create applications that are accessible to all.

Understanding Linux C7 At Spi2 Atk

Before diving into how to use it, it’s essential to understand what Linux C7 At Spi2 Atk is precisely. This Linux Centos 7 port - Assistive Technology Service Provider Interface AT-SPI2 and Accessibility Toolkit ATK are part of the Linux accessibility infrastructure. In simpler terms, these two tools provide the means for physically impaired persons to interact with software applications efficiently.

AT-SPI2 provides a framework where assistive technologies AT can access application interfaces. On the other hand, ATK provides a set of interfaces for software accessibility. Consequently, these two work together in the Linux C7 At Spi2 Atk port to enable interaction between user applications and assistive technologies.

Setting Up Linux C7 At Spi2 Atk

To set up the Linux C7 At Spi2 Atk port in FreeBSD, you first need to locate it from the ports collection. The Ports Collection is a set of makefiles, patches, and description files placed in the /usr/ports/ directory in your FreeBSD system. Once you locate this port, you can install it by moving into the respective directory and running the make install clean command.

cd /usr/ports/accessibility/linux-c7_at-spi2-atk/
make install clean

This command will compile and install the port on your FreeBSD system. Upon completion, the Linux C7 At Spi2 Atk port will be available for integration into your software applications.

Using Linux C7 At Spi2 Atk

Once you have the port installed, you can readily use it in your applications to provide accessibility features. As a developer, to provide assistance to users, you’ll need to link up the AT-SPI2 and ATK tools within your application.

With the ATK, you use its APIs to define the properties of your application’s user interface components. For instance, if you have a button on your application, you’d use the ATK to describe this button, its purpose, and how it behaves when interacted with.

The AT-SPI2, on the other hand, will be used to expose these details to intended assistive technologies. For example, if a visually impaired user uses text-to-speech software, the AT-SPI2 functionality will help this software understand the properties of the button as defined by ATK.

Together, they make it possible for assistive technologies to interact with your application, hence providing the desired accessibility features.

The Importance of Linux C7 At Spi2 Atk

Linux C7 At Spi2 Atk plays a significant role in ensuring software accessibility. By bridging the communication gap between software applications and assistive technologies, it greatly contributes to breaking down barriers for users with various impairments, such as vision or hearing issues.

Moreover, its integration in the FreeBSD ports collection makes it readily accessible to developers, fostering the creation of more accessible software. It could be compared to other crucial FreeBSD ports such as [nmap]https//, which plays a critical role in IT Security by providing network exploration capabilities.


In summary, Linux C7 At Spi2 Atk is a less-talked-about but highly capable FreeBSD port crucial for creating accessible software applications. Its functionalities provide a bridge between user interface components and assistive technologies, making software more usable by individuals with physical impairments. As such, understanding and utilizing Linux C7 At Spi2 Atk is key to inclusive software development. It’s part of the wide-ranging power that FreeBSD ports offer to developers, much akin to ports like nmap and others in various fields.

Checkout these related ports:
  • Yasr - General-purpose console screen reader
  • Wlsunset - Day/night gamma adjustments for Wayland
  • Wl-gammarelay-rs - Adjust color temperature/brightness under Wayland via DBus
  • Speech-dispatcher -
  • Sctd - Set color temperature (sct) daemon
  • Sct - Utility to change screen temperature
  • Rubygem-atk - Ruby binding of ATK
  • Redshift - Adjusts the color temperature of your screen
  • Qt6-speech - Accessibilty features for Qt6
  • Qt5-speech - Accessibilty features for Qt5
  • Py-speech-dispatcher - Python bindings for Speech Dispatcher
  • Py-papi - ATK accessibility wrapper for python
  • Py-atspi - Python API for the D-BUS based SPI framework
  • Orca - Scriptable screen reader
  • Linux-c7-atk - Accessibility Toolkit (Linux CentOS ${LINUX_DIST_VER})