Translate Netflix subtitles into multiple languages in real-time.
Free with in-app purchases
Best Substital Alternatives ranked by AI · updated Aug 2026
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Substital is a browser extension for adding and synchronizing subtitles on online video platforms, including Netflix and other streaming sites. It is useful for viewers who need a second subtitle track or subtitles unavailable in the player.
Top 6 Substital alternatives
CaptionPop is a software tool that automatically generates captions for videos to improve accessibility and engagement.
Starting at $29 per month
NekoCap is a browser-based captioning tool for adding custom subtitles to online videos. It is aimed at viewers who need captions on...
Pros
- Adds custom captions to videos that do not provide them
- Useful for accessibility, fan subtitles, and language learning
- Works as a lightweight browser-based tool rather than a full video editor
Cons
- Coverage depends on supported video websites and player compatibility
- Caption creation is less powerful than dedicated subtitle editors
- May require manual timing and subtitle sourcing
NflxMultiSubs is a browser extension that displays two subtitle languages simultaneously on Netflix. It is aimed at language learners who want to...
Pros
- Displays dual subtitles directly on Netflix
- Free to use without a subscription
- Lightweight and focused on subtitle comparison
Cons
- Offers fewer dictionaries and learning tools than Language Reactor
- Supports Netflix rather than a broad range of streaming services
- Lacks built-in subtitle saving and review workflows
Learn languages while watching Netflix.
Pros
- Language learning integration
- Customizable learning options
Cons
- Premium features require payment
Free with premium features
Translate words and phrases on web pages.
Pros
- Web page translation
- Multiple language support
Cons
- Premium features require payment
Free with premium features
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