Learn DSA the way senior engineers actually use it — not isolated leetcode puzzles, but the reasoning behind why a heap, trie, or graph algorithm becomes the right call inside real system design tradeoffs.
- A map of DSA topics that unlock in order, from the fundamentals up.
- Chapters inside each topic, each one about a real system and the data structure decision it had to make.
- Problems built on each chapter, solved in the browser against real tests.
- Self-hosted and free. Run it for yourself (single-user, no login) or for a group (accounts, invites).
Design phase. There is no code to run yet. MVP1 is being designed first, then built.
- Design: BeyondLeetcode — UI, a canvas with every screen in light and dark, organised by area.
- Roadmap: project board, with every piece of planned work as a card.
Content requests (a new chapter, problem or topic) and bugs go in Issues.
Everything a learner reads or solves must meet the content standards: every claim about a real system cites a primary source, and a human has checked it.