The AoPS Alcumus system provides free online mathematics learning materials from Art of Problem Solving.
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24 alternativesThe Borr Project
The Borr Project provides pre-college mathematics resources and learning materials.
About The Borr Project
The Borr Project is a mathematics curriculum built from online learning materials. It is designed to follow the degree requirements of undergraduate math majors, without the general education (non-math) requirements, and assumes learners are already educated outside the field of math. Students cover core topics such as mathematical thinking, calculus, differential equations, and discrete mathematics, then choose elective Advanced Topics. Courses are drawn from external sources, often from universities such as Harvard, MIT, and Stanford, and are selected to match the 2015 CUPM Guide, be open for enrollment, run regularly, and meet a standard of quality. When no course meets these criteria, the coursework is supplemented with a book.
The project suggests about 2 years of study at roughly 18 to 22 hours per week. It states that it aims to use free resources, but some courses may charge for graded assignments, tests, or projects. Students can work alone or in groups, and a Discord server and GitHub issues are used for discussion and reporting course problems. Students who share coursework publicly must share only files they are allowed to share.
Key features
- Core Mathematics courses required for all students, including Calculus and Differential Equations
- Advanced Topics electives, with one course per area and a full track in one chosen topic
- Courses sorted by prerequisites, with a recommended order from top to bottom
- Option to create a custom subject, with community feedback recommended
- Discord server for discussion with other students
- GitHub issues for reporting course problems and proposing curriculum changes
- Suggested pace of about 18 to 22 hours per week over about 2 years
Best for: Adults with education outside mathematics who want a self-directed, undergraduate-level foundation in math and can keep up a steady study schedule.
Good for
- Curriculum is designed to match undergraduate math major requirements
- Courses are chosen for quality, regular offering, and alignment with the 2015 CUPM Guide
- Project aims to identify free resources for learning goals
Watch out for
- Some courses may charge money for graded assignments, tests, or projects
- Designed for learners who can study largely on their own
- Students may share coursework publicly only with files they are allowed to share
The Borr Project at a glance
- Website
- borr.dev/math
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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The Borr Project FAQ
How long does the curriculum take?
The project states it is possible to finish within about 2 years if you plan carefully and devote roughly 18 to 22 hours per week.
Is the curriculum free?
The project aims to use free resources, but some courses may charge money for graded assignments, tests, or projects. Students decide how much to spend based on their own time and budget.
Where can students get help?
Students can talk with other learners on the project's Discord server. Problems with a course or proposed curriculum changes can be raised through GitHub issues.
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