KeepVid might be a bit more popular than Ludus. We know about 1 link to it since March 2021 and only 1 link to Ludus. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I would go full text-mode (Markdown), Keynote or Ludus[1] [1]: https://ludus.one/. - Source: Hacker News / almost 2 years ago
I used to use keepvid.com but it looks like they've changed themselves exclusively to format conversation and no longer offer video download. Source: over 2 years ago
Slidebean - Presentations that design themselves
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SaveFrom.Biz - Convert YouTube video URL to MP4 file and download it to your device. SafeFrom is the best YouTube video downloader and converter.
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ShareTube - Watch YouTube, synced with friends.