[1] In November 2019 United Nations Secretary-General António Guterres appointed Esterhuysen to chair the Internet Governance Forum’s Multistakeholder Advisory Group.

SANGONeT provided Internet connectivity, technical training, and website hosting to civil society organisations, trade unions, and others engaged in the mass democratic movement.

Prior to that, she was Chief Librarian and consultant for the South African Council of Churches[6] (SACC), where she facilitated training in documentation techniques and information management.

“In the late ‘80s, anti-apartheid groups, labour federations, environmental organisations and members of the green movement began using emerging communications technology to further their work in social justice and activism.

In November 2019, Esterhuysen was appointed by the Secretary-General of the United Nations to serve as the chair of the Multistakeholder Advisory Group, the coordination body for the Internet Governance Forum[10] She was one of five finalists for IT Personality of the Year in South Africa in 2012.