Kita Browser by HelpfulFish

Kitamersion is a simple immersion tracking tool. Primarily for language learning immersion.

Features

• Add videos to your list with a simple shortcut (Shift+A)
• Organize with tags
• Keep track of your total watch time (daily, weekly, monthly, and yearly)
• Dive into your immersion with the statistics page (and view all items)
• Auto-apply tags based on origin
• Isolation window mode (pop-out window)
• Optional cross-device sync — sign in to keep your videos and tags in sync across browsers/devices. Off by default, and you can delete your synced data or account at any time.
• Open source on GitHub

AniList Integration (Unofficial) — Sync your currently watching anime straight to your AniList profile!