ONLYOFFICE and WikiSuite have some similarities. This page is to explain the differences and rationale of choices. You likely will be interested in the other alternatives to WikiSuite.
ONLYOFFICE's philosophy is to use Microsoft Office file formats: https://www.onlyoffice.com/blog/2018/08/onlyoffice-vs-libreoffice-what-to-choose-when-you-decide-to-ditch-microsoft/