Afrikaans
Freedict.com English-Afrikaans, Afrikaans-English online dictionary
http://www.freedict.com/onldict/afr.html

English-Afrikaans Internet term list / Engels-Afrikaans Internettermlys
http://www.geocities.com/Wellesley/5897/le06.html

English-Afrikaans Word list of the Motoring industry / Engels-Afrikaans Woordelys van die Motorindustrie
http://www.geocities.com/Wellesley/5897/le11.html

English-Afrikaans Wine list / Engels-Afrikaans Wynwoordelys
http://www.geocities.com/Wellesley/5897/le12.html

Afrikaans for travellers
http://www.travlang.com/languages/cgi-bin/langchoice.cgi?page=main&lang1=english&lang2=afrikaans


Northern Sotho
Sesotho sa Leboa (Northern Sotho) - English Dictionary
http://africanlanguages.com/sdp/

Sepedi English Dictionary (short word list)
http://www.websters-online-dictionary.org/definition/Sepedi-english/

Linguistics Terminology Northern Sotho / Mareo a Popopolelo ya Sesotho sa Leboa
http://africanlanguages.com/sdp/linguistics/index.php?l=en


Sesotho
Bukantswe Online
http://bukantswe.sesotho.org/

Bukantswe (electronic downloadable dictionary)
http://www.sesotho.web.za/bukantswe/

Sesotho for travelers
http://www.travlang.com/languages/cgi-bin/langchoice.cgi?page=main&lang1=english&lang2=sesotho


Setswana
Tswana English Dictionary (short word list)
http://www.websters-online-dictionary.org/definition/Tswana-english/


Swati
Swazi English Dictionary (short word list)
http://www.websters-online-dictionary.org/definition/Swazi-english/


Xhosa
Xhosa English Dictionary (short word list)
http://www.websters-online-dictionary.org/definition/Xhosa-english/

Xhosa for travelers
http://www.travlang.com/languages/cgi-bin/langchoice.cgi?page=main&lang1=english&lang2=xhosa


Zulu
IsiZulu.net - isiZulu online dictionary
http://isizulu.net/

Jason Wolfe's Useful Zulu Medical Dictionary
http://www.jwolfe.clara.net/WebPages/ZuluDict.htm

isiZulu for Travelers
http://www.travlang.com/languages/cgi-bin/langchoice.cgi?page=main&lang1=english&lang2=zulu

Zulu English Dictionary (short word list)
http://www.websters-online-dictionary.org/definition/Zulu-english/


General dictionaries
SA-venues.com: South Africa Languages and Culture (SA English, Zulu and Xhosa word lists)
http://www.sa-venues.com/sa_languages_and_culture.htm

Other African languages see:
http://www.yourdictionary.com/languages/nigecong.html

Comparative Bantu On Line Dictionary Project (includes searchable dictionaries in Tswana, Venda and Ndebele)
http://www.linguistics.berkeley.edu/~jblowe/CBOLD/

Also try this useful multilingual online dictionary: