SiSwati is one of the official languages of South Africa, and is also an official language of Swaziland (along with English). There are 1,194,430 (2.66 %) first language speakers [2001 census data] in South Africa.

SiSwati is a member of the "Nguni" language group, and is most closely related to isiZulu, isiNdebele and isiXhosa.

SiSwati language family tree.

Books

South African Oxford Multilingual Primary Dictionary (Nguni) (OUPSA)
[ Buy from Kalahari.net | Publisher link ]

• Web-lingo South African based online translation service offering general and technical translations, development of multilingual websites, and software localisation services.
• Folio Translation Consultants "specialising in African, major European and Asian languages".
• Jako Olivier Language Services "For fast, reliable and quality translations between English and: Afrikaans, Ndebele, Northern Sotho (Sepedi), Otjiherero, Sesotho, Shona, Swahili, Swati, Tsonga, Tswana, Venda, Xhosa and Zulu."
• Asterisks.com Editing and Translation Services Online. Specializing in the 11 official languages of South Africa.
• Lingua Consultants specialize in the medical, pharmaceutical and chemical fields in European and African languages.
• Multilingua Translation and Interpretation Services

• Ligwalagwala FM

Projects

http://www.translate.org.za/
A non-profit organization translating various OpenSource software packages such as OpenOffice.org and the Mozilla web browser into all official South African languages. They have released isiZulu, Sesotho sa Leboa and Afrikaans versions of OpenOffice.

SiSwati Wikipedia