Much useful information about South Africa is available from government. South Africa Government Online provides access to a wide range of publications post 1994 such as acts and bills, white papers, statistical information (click on the 'Documents' option on the toolbar) and government departments, national and provincial (choose from the left hand side options). The South African yearbook is also available full text under the 'About SA' option on the toolbar.
Hansard verbatim reports of parliamentary proceedings.
The most recent versions of acts are available via the databases Juta e publications (next to the Juta logo, click on the downwards arrow next to 'Choose search form' and choose acts or use the left hand side contents column on the main page) and LexisNexis (use left hand contents column or choose one of the tabs).
Parliamentary Monitoring Group is also a useful source of parliamentary activity.
Polity org.za is a privately owned website that includes government documents and legislation