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CLUSTER BILINGUAL-EXTENSION-TRANSCRIPTS · 36 ENTRIES · EARLIEST ENTRY 2026-08-11

Bilingual video study tools

This cluster comprises browser extensions that turn online videos—chiefly YouTube and Bilibili—into study resources by adding bilingual transcripts, translations, AI summaries, timestamped notes, and vocabulary tools, often exporting to note apps like Obsidian or Notion. The dated history before the index start is too thin to read a shape from—only one entry predates the index, and one member has no source date. Traction leaders are bilibili-digest (142 stars), DramaLens (123 stars), and mazelingo (24 stars).

Entry timeline

ENTRY TIMELINE

FEB 2019: 1FEB 2026: 1MAY 2026: 2AUG 2026: 21SEP 2026: 9OCT 2026: 2
FEB 2019OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 4 ai-built · 12 unlabelled

Operator · 10 hobby · 6 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 16 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 21course-notes-extension0★15 days—hobbyBrowser extension that records video timestamps, captures screen text, and generates study notes for online courses.
  2. 22anki-quick-add1★1 mo—Chrome extension that creates complete Anki flashcards from any selected word, including translation, pronunciation, and images.
  3. 23youtube-digest0★26 days—hobbyChrome extension that adds a study panel to YouTube with transcripts, translations, AI overviews, and timestamped notes for learning.
  4. 24RAG-YT-extension2★1 mo—Browser extension for YouTube that uses retrieval-augmented generation to provide answers or summaries.
  5. 25phrase-highlighter-for-language-reactor0★1 mo—hobbyBrowser extension that highlights phrase patterns on dual subtitles within Language Reactor to help language learners notice vocabulary while watching videos.
  6. 26TubeJoy0★1 mo—hobbyBrowser extension that adds transcripts, translations, AI summaries, timestamped notes, and vocabulary tools to online videos.
  7. 27video-digest0★1 mo—hobbyBrowser extension that turns YouTube and Bilibili videos into transcripts, translations, AI summaries, chat, and exportable study notes.
  8. 28tube-scholar0★1 mo—hobbyChrome extension that turns YouTube videos into learning materials with transcripts, bilingual translation, AI overviews, timestamped notes, and selected-text explanations.
  9. 29youtube-digest-obsidian0★1 mo—hobbyChrome extension that converts YouTube videos into learning resources with transcripts, bilingual translation, AI summaries, and timestamped notes synced to a note-taking app.
  10. 30jeffrey-video-digest0★1 mo—hobbyA Chrome extension that converts YouTube videos into searchable transcripts, bilingual translations, AI summaries, and timestamped notes for learning.
  11. 31youtube-timestamp-comments0★5 moliveai-builthobbyBrowser extension that lets viewers browse and search YouTube video comments organized by timestamp and jump directly to moments.
  12. 32you-tube-chat-extension0★1 mo—Browser extension that answers questions about the current YouTube video from its transcript using a local retrieval backend.
  13. 33youtube-columns-adjuster-extension0★4 mo—ai-builtChrome extension that lets users customize YouTube layout by adjusting column count, hiding shorts, and removing overlays.
  14. 34snack-tape0★4 mo—ai-builthobbyBrowser extension that saves YouTube time ranges as clips and groups them into local mixtapes for personal replay.
  15. 35YouTube Watch Later Bulk Manager - Delete Hundreds in Seconds0★unknownliveai-builtChrome extension that lets users bulk delete and manage YouTube Watch Later videos with checkboxes and one-click removal.
  16. 36TubeClip - YouTube動画要約ツール0★unknownliveBrowser extension that summarizes up to eight YouTube videos in one batch to support research and learning.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.