https://etherpad.wikimedia.org/p/online-tools-for-the-pandemic
(Not just for the pandemic)
There are also ambitious plans for ‘Co-operation as a Service’ put together by the great folks at Digital Life Collective, especially Joachim Stroh:
https://diglife.com/activate-caas/
There’s a webinar from OPEN COOP: OPEN 2020 Webinar – Digital Life Collective
and an associated discussion doc.