NVDA (NonVisual Desktop Access)

NVDA is a world-class, open-source screen reader for Microsoft Windows. It enables blind and vision-impaired people to access and interact with the Windows operating system and many third-party applications. Its high ranking is earned through its robust feature set, which rivals expensive commercial alternatives, and its active community-driven development. It supports a wide range of braille displays and synthesizers.

While the learning curve can be steep for beginners, the level of customization and the fact that it is completely free makes it an essential tool for digital inclusion.