orca: orca (Orca GNOME Visual Assistive Technology) orca: orca: Orca is a free, open source, flexible, extensible, and powerful orca: assistive technology for people with visual impairments. Using various orca: combinations of speech synthesis, braille, and magnification, Orca helps orca: provide access to applications and toolkits that support the AT-SPI (e.g., orca: the GNOME desktop). The development of Orca has been led by the orca: Accessibility Program Office of Sun Microsystems, Inc. with orca: contributions from many community members. orca: orca: