r/cs50↗
This is r/cs50
Demanding, but definitely doable. Social, but educational. A focused topic, but broadly applicable skills. CS50 is the quintessential Harvard (and Oxford!) course.
140k subscribers172 posts / mo in Sep 2026136 authors / mosince 2010
r/cs50 has 140k members (+10% over the last 12 months). It gets about 172 posts a month from 136 people. Top topics: Learning Resources, Python Programming and Coding Issues.
When to post on r/cs50
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How r/cs50 has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/cs50
Top topics
Share of the subreddit's posts
- Learning Resources2.3%
- Python Programming0.8%
- Coding Issues0.5%
- Lecture Videos & Downloads0.4%
- Learning Resources0.3%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Massachusetts Institute of Technology
- edX
- Atlassian
- W3Schools Online Web Tutorials
- Python
Everything else about r/cs50
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research