Accessibility tools that previously shipped in the Microsoft Accessibility Package (MSAA SDK) now ship along with the Windows SDK. These tools are used to inspect messages used by screen readers to take text from applications and either speak it with text-to-speech or passes it to a Braille device. One of the older tools is Inspect. A short description from the documentation is:
Inspect Objects Tool.
Allows developers and testers to examine the IAccessible property values of the the user interface (UI) items of an application and to navigate to other objects.
Accessible Event Watcher.
Allows developers and testers to validate that the user interface (UI) elements of an application raise proper Active Accessibility events when the UI changes.
You can find the links for the Windows SDK on the Windows Accessibility Page of the Windows Developer Center. You only need to install the Toolkit components if these features are the only ones you want to download. The following screenshot shows the Windows SDK with only the Tools selected.
This is a relatively short download. After you have downloaded the toolkit, you will have the Microsoft SDK 7.1 Tools menu on your Start menu. The following screenshot shows the contents of this menu.
So there you have it, the accessibility tools aren't gone, they just moved a little bit.