The Assistive Technology Service Provider Interface (AT-SPI) is a platform-independent framework for two-way communication between assistive technologies (AT) and applications.

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It is the de-facto standard for accessing free and open desktops such as Linux or OpenBSD

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A common nomenclature for describing an accessibility framework is a common client-server architecture.

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In this architecture, the client and the server must communicate with each other, usually using the platform’s IPC technology.

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the accessibility framework provides both client-side and server-side implementation of this API.

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In the case of GNOME, there are two different APIs, one for the client-side (AT-SPI) and another for the server-side (Accessibility Toolkit (ATK))

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ATSPI was originally designed to use the Common Object Request Broker Architecture

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The AT-SPI specification itself was related to CORBA as defined in CORBA IDL.

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Click here to learn details about ATSPI in detail. Thank you.

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