ClivieGet Clivie.
The installer is about 210 MB. On first launch Clivie downloads the rest — ffmpeg and the editing assistant, about 450 MB — once. The graphics pack follows the first time you ask for a title or counter.
You'll need a licence key; alpha keys come by email. Updates install themselves when you quit.
Links go to the release list until the latest version loads.
System requirements
Computer
8 GB of memory (16 GB for long 4K timelines), 64-bit.
Disk
About 2 GB for the app and its downloads with the graphics pack, plus room for your projects' caches.
Network
Needed for AI features and the licence check. Editing and export work offline.
Alpha builds may be unsigned. If macOS says the app can't be opened, Control-click it and choose Open; on Windows, choose More info → Run anyway. Details.