South African Heritage Resources Agency (SAHRA) manages the South African Heritage Resources Information System (SAHRIS)
South African History Archives (SAHA) collections
HSRC Press open access book collection (400+ titles)
Wits University Historical Papers Research Archive
Various digital collections at the University of Cape Town.
Zamani Project is posting GIS spatial data packages and 3D models of heritage sites across Africa
South African Centre for Digital Language Resources (SADiLaR) collection of language resources
Repository of the 500 Year Archive, an experimental digital research tool. It is designed to support historical enquiry into the five hundred years before colonialism in what is today KwaZulu-Natal and neighbouring regions. It convenes online diverse materials including, amongst other things, texts, images, recordings, excavated items and botanical material, as well as early vernacular publications.
According to the National Library of South Africa (NLSA), "all newspapers published in South Africa are collected by the NLSA" and a digital archive is being implemented.
There are some examples of what can be done with open cultural data, mostly from the US (but please Tweet us about others if you have seen them).
See this exhibition of projects developed for HackUrCulture, hosted by the Goethe Institut Johannesburg and Credipple in October 2020.
Map a trip using the New York Public Library (NYPL) Green Book items
Southern Mosaic is a visual story using data from the US Library of Congress
Also by the New York Public Library, a visual grouping of 180,000+ public domain items
The Met has collaborated with Google to enable searching of archives using colour
A visual timeline of the Harvard Art Museum collection
Exploring Arts Engagement with (Open) Data by Tim Davies
Open cultural data: Curating GLAM in the digital age in the Jakarta Post
Data as Culture with ODI
A list of 'Cool stuff made with cultural heritage APIs'
Using Public Domain Materials in the Classroom by New York Public Library
Have a look at these storytelling tools from Knightlab including Timeline, StoryMap, Soundcite and Juxtapose.