Mac side
Safari is built in, fast and battery-efficient on Mac hardware, and it is listed in migration guidance as the built-in alternative to Internet Explorer and Edge. Pages is Apple's native word processor, part of the standard Mac productivity stack. QuickTime Player comes with macOS and covers basic playback and screen recording.
Microsoft Office for Mac is the Mac counterpart to the Windows office suite, covering documents, spreadsheets and email. If your files are shared with Windows users, start here. If you are willing to move away from Windows document habits, test Pages with a real project before you commit.