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