Alternate to confluence

Hi All ,

I am searching for an alternate to confluence as our org is going to sunset confluence wiki. we use teams for communication is there any Teams app we can use for collaborative work ? we are looking for a brilliant software like confluence which can really reduce the email traffic and also at the same time keep every body in sync. as our organisation is big , if it is a Microsoft teams app then  we can really keep all the people involved project notified on the development as it would be LDAP integrated.