150 topics in 16 areas
Each video sits in one to three topics. Counts are videos; the area heading opens a ranked list across the whole area.
Software Engineering & Languages 1604
- Programming language design193
- Functional programming225
- C, C++, Rust, Go & systems languages163
- Python, Ruby & scripting languages120
- Web development160
- Software architecture & design177
- Software performance & optimization123
- Compilers, interpreters & program analysis98
- Testing, debugging & developer tools155
- Software practice, open source & careers154
- Software (other)36
Systems, Networks & Security 956
AI, Machine Learning & Data 718
Mathematics & Theoretical CS 479
Hardware & Electronics 769
Computing History & Culture 1295
Design, Graphics & Visual Media 501
Business, Startups & Economics 787
Politics, History & Society 1425
Physics, Space & Chemistry 768
Life Sciences, Mind & Health 827
Earth, Energy & Environment 448
Engineering, Transport & Making 994
- Aviation & aerospace engineering124
- Cars, EVs & motorcycles171
- Transit, cities & urban planning174
- Civil engineering & construction70
- Mechanical & precision engineering141
- Manufacturing & industrial processes69
- Woodworking, metalworking & workshop skills34
- 3D printing, CNC & maker projects58
- Home, DIY & practical skills61
- Cooking & food41
- Ships, submarines & maritime24
- Engineering & making (other)27
Games & Game Development 503
Arts, Comedy, Music & Film 1731
- Stand-up & sketch comedy244
- Satire & parody362
- Music performance & songs239
- Music theory, synthesis & production103
- Film & TV clips310
- Film analysis & criticism39
- Documentaries & storytelling202
- Literature & writing craft43
- Visual arts, photography & architecture42
- Sports & athletics38
- Magic, puzzles & curiosities34
- Arts & entertainment (other)75
Ideas, Learning & Language 782
Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.