The LaunchGood appeal is headed "Standing with victims and their families - United for Christchurch - New Zealand mosque shootings".
"I would like to express my horror and revulsion at the terrorist attacks which have targeted people attending two mosques in Christchurch, New Zealand today during Friday prayers", said World Jewish Congress president Ronald S. Lauder.
Nearly $1 million has been donated to two crowdfunding initiatives in support of New Zealand shooting victims in fewer than 24 hours since the incident, the New Zealand Herald reported Friday.
LaunchGood has so far raised more than $1m AUD.
"All funds raised are going to be distributed to the families by NZIIC - New Zealand Islamic Information Centre". "If the event had gone ahead there would have been a significant presence of heavily armed police at the festival which would not have been appropriate for Saturday's family day focus at the ASB Polyfest".
New Zealanders and people from all over the world continue to donate to the victims and a number of vigils are being organised across the country.
"My warmest sympathy and best wishes goes out to the people of New Zealand after the terrible massacre in the Mosques". NZ is a place where every ethnic group has the freedom to worship their Faith. "We All stand with our Muslim friends and families". We offer our deepest condolences.
Israeli Prime Minister Benjamin Netanyahu said on Twitter that Israel "mourns the wanton murder of innocent worshippers in Christchurch and condemns the brazen act of terror in New Zealand".
"The attack on peaceful civilians who gathered to pray is striking with its cruelty and cynicism", Putin said in his telegram to NZ Prime Minister Jacinda Ardern.
Tree of Life Rabbi Jeffrey Myers, who serves the Pittsburgh synagogue where 11 worshippers were killed previous year in an anti-Semitic attack, said New Zealand's mosque shootings were a dark reminder of the past.
Police said that four people were taken into custody.