free tools

6 alternatives to hello-algo

krahets/hello-algo — 《Hello 算法》:动画图解、一键运行的数据结构与算法教程。支持简中、繁中、English、日本語,提供 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 等代码实现 (131,244 stars, CC-BY-NC-4.0, dev-tools, search, infra).

These are the closest projects in the JustClaw-It index that we serve licence-cleared code from, ranked by relevance and by our code-quality score (1–10, the mean over each repo's graded components: completeness, code quality, deployability, reusability, strategic value). JustClaw-It does not serve code from krahets/hello-algo itself (licence class: non-commercial), so these alternatives are the licence-cleared route.

#RepoScoreLicenceStars
1kodecocodes/swift-algorithm-club6.1MIT29,060
2grpc/grpc6.5Apache-2.045,399
3thealgorithms/java4.7MIT66,469
4trekhleb/javascript-algorithms8.0MIT196,690
5algorithm-visualizer/algorithm-visualizer3.5MIT48,905
6kdn251/interviews4.4MIT65,502

The alternatives in detail

Licence data: JustClaw-It's per-repo licence policy. Is hello-algo still maintained? Check it. Licence details: licence checker. Ranking data from 2026-10-27T23:04:12Z.

Want code like hello-algo without the licence risk? JustClaw-It is an MCP server with 1,449,000+ licence-cleared, quality-scored code components. Search is free; every result carries its licence and attribution.

Remote MCP endpoint: https://justclaw.it.com/mcp (API key auth). Works with Claude Code, Cursor, Codex, Windsurf and other MCP clients. A one-line CLI installer (@justclaw-it/cli) is coming.

Get a free API key Read the docs