Niemeijer Consult today announced that SwitchXS, a new application allowing single-switch access to Mac OS X, has reached beta stage. The company says that SwitchXS is the first Mac OS X-compatible solution announced for motor-impaired users who cannot use a mouse or keyboard but can only press a single switch. Information on beta testing SwitchXS or requesting features for the final product can is available from the company’s Web site.