Netflix Sync Party is a Chrome extension that allows you to schedule watch parties on Netflix with the press of a button. You can share the link with your friends for synced Netflix videos. The extension is free, secure, and open source.

The best part is that there are no ads, queues, login, or lag. However, the extension doesn't support video or text chat, since external services do it better. For best results, ensure that you and everyone in the party have the correct time and time zone on their computer.

Overall, Netflix Sync Party is a simple and stable solution for syncing your movies with friends during a call. The extension is made with love by Deb and Mihir, and the source code is available on their Github page.