Index
Browse by subreddit
Every community we currently read for book mentions. The differentiated value is in specialty subs where readers recommend books outside the usual canon — programming, music, photography, history. Today we cover 38 subs; more coming as the pipeline expands.
r/askscience
26.0M membersr/askscience is a moderated Q&A forum where verified scientists and informed enthusiasts answer questions spanning biology, physics, chemistry, and earth sciences.
19 books indexed
r/personalfinance
21.7M membersA broad personal-finance sub for people at every stage — budgeting, debt payoff, first jobs, retirement basics — with 17 million members making it one of Reddit's largest money communities.
8 books indexed
r/philosophy
18.5M membersA general philosophy subreddit for discussion of philosophical texts, arguments, and ideas across all traditions and periods.
34 books indexed
r/history
17.6M membersA general-audience history forum where enthusiasts, students, and autodidacts share reading recommendations across all periods and regions.
30 books indexed
r/programming
6.9M membersA general-purpose programming subreddit for news, articles, and discussion across all languages and disciplines, drawing a broad audience of working developers.
38 books indexed
r/Entrepreneur
5.2M membersA general-purpose entrepreneurship forum where founders, solopreneurs, and early-stage operators share advice, war stories, and book recommendations.
27 books indexed
r/learnprogramming
4.4M membersA beginner-to-intermediate programming sub where people post questions about learning to code, choosing languages, and building foundational skills.
50 books indexed
r/productivity
4.2M membersA subreddit for people seeking practical systems to get more done, manage time, and reduce friction in their work and personal lives.
27 books indexed
r/compsci
4.0M membersr/compsci is a subreddit for computer science theory, research, and foundational topics, drawing students, academics, and engineers interested in the discipline's intellectual core rather than day-to-day coding practice.
32 books indexed
r/Fantasy
3.9M membersr/Fantasy is Reddit's largest fantasy fiction community, where readers recommend and debate epic, secondary-world, and grimdark fantasy series.
110 books indexed
r/suggestmeabook
3.4M membersA general recommendation subreddit where readers describe what they're in the mood for and other users suggest specific titles across every genre.
122 books indexed
r/investing
3.4M membersA general-purpose investing subreddit for retail investors discussing stocks, funds, and personal finance strategy, spanning everything from index-fund basics to individual stock analysis.
39 books indexed
r/webdev
3.3M membersA subreddit for web developers of all experience levels to discuss tools, workflows, and best practices in front-end, back-end, and full-stack development.
24 books indexed
r/MachineLearning
3.0M membersA research-oriented subreddit for ML practitioners and academics discussing papers, methods, and tools in machine learning.
16 books indexed
r/datascience
2.7M membersA subreddit for working data scientists and analysts to discuss tools, workflows, career questions, and the practical realities of the field.
17 books indexed
r/selfimprovement
2.6M membersA general self-improvement subreddit where people share struggles with habits, confidence, and mental health and ask for book recommendations to address them.
30 books indexed
r/smallbusiness
2.5M membersA subreddit for owners and operators of small businesses seeking practical advice on running, growing, and surviving their companies.
14 books indexed
r/cscareerquestions
2.4M membersr/cscareerquestions is a subreddit for software engineers and CS students discussing job hunting, interviews, salaries, and career progression in tech.
48 books indexed
r/AskHistorians
2.2M membersA strictly moderated history Q&A subreddit where answers must come from users with demonstrable expertise, producing one of the most source-cited communities on Reddit.
44 books indexed
r/getdisciplined
2.2M membersA subreddit for people building self-discipline and consistent habits, populated largely by younger readers working on motivation, focus, and daily routines.
31 books indexed
r/startups
2.1M membersA subreddit for founders, early employees, and investors discussing the mechanics of building and scaling new companies.
9 books indexed
r/gamedev
2.0M membersr/gamedev is a community for professional and hobbyist game developers discussing engines, design, code architecture, and the business of making games.
13 books indexed
r/Python
1.5M membersr/Python is the main community for Python developers and enthusiasts, covering news, projects, tutorials, and language discussion across all skill levels.
18 books indexed
r/sysadmin
1.3M membersA subreddit for professional system administrators to discuss operations, infrastructure, tooling, and the daily realities of keeping systems running.
16 books indexed
r/Bogleheads
845k membersA community built around John Bogle's philosophy of low-cost index-fund investing, populated largely by buy-and-hold investors focused on long-term wealth accumulation through passive strategies.
33 books indexed
r/Stoicism
814k membersA subreddit for practitioners and students of Stoic philosophy, ranging from beginners seeking entry points to long-term readers working through the primary texts.
25 books indexed
r/horrorlit
608k membersr/horrorlit is Reddit's main subreddit for discussing and recommending horror literature - novels, novellas, and short fiction, as distinct from horror film.
53 books indexed
r/askphilosophy
592k membersA Q&A subreddit moderated by academic philosophers and graduate students, where users ask direct questions about philosophical texts, arguments, and traditions.
40 books indexed
r/devops
490k membersA subreddit for practitioners and engineers working in DevOps, focused on culture, tooling, automation, and the organizational side of software delivery.
39 books indexed
r/CPTSD
453k membersA support and discussion community for people living with Complex PTSD, focused on healing from prolonged trauma, emotional neglect, and abusive relationships.
51 books indexed
r/ExperiencedDevs
392k membersA subreddit for software engineers with professional experience to discuss career growth, architecture, engineering culture, and the realities of working in large codebases.
51 books indexed
r/printSF
360k membersr/printSF is a subreddit for discussing and recommending science fiction books, explicitly excluding film and TV adaptations.
110 books indexed
r/askpsychology
265k membersA question-and-answer sub where people ask practicing psychologists and psychology students about mental health, behaviour, and research.
15 books indexed
r/AskProgramming
222k membersA Q&A subreddit where programmers of all levels post specific technical questions and ask for book recommendations to solve concrete problems.
29 books indexed
r/AcademicPsychology
183k membersA subreddit for academic psychologists, researchers, and graduate students to discuss the science of psychology, methodology, and professional development.
10 books indexed
r/therapists
162k membersA professional community for licensed therapists and trainees to discuss clinical practice, ethics, and career challenges.
41 books indexed
r/attachment_theory
88k membersA subreddit for people studying and applying attachment theory to their own relationships and psychological development, drawing heavily from both clinical literature and self-help.
26 books indexed
r/InternalFamilySystems
82k membersA subreddit for people practicing or learning Internal Family Systems therapy, a parts-based model developed by Richard Schwartz.
23 books indexed