What are the best open-source alternatives to LeetCUDA?

The highest-adopted open-source alternative is karpathy/llm.c with 31.0k GitHub stars and a Grade B rating on GitiGit.

How does GitiGit rank alternatives for LeetCUDA?

Alternatives are compared using verifiable maintainer telemetry, 52-week commit cadence, issue response latency, license safety, and architecture trade-offs.

🔁 OPEN SOURCE ALTERNATIVES2026 Directory

Best Open-Source Alternatives to LeetCUDA

Looking for modern, production-ready alternatives to LeetCUDA? Compare live maintainer velocity, security posture, license safety, and architecture benchmarks before committing to a tech stack dependency.

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Alternatives Comparison Matrix

Project	Language	Health Grade	Stars	License	Compare
karpathy/llm.c	Cuda	Grade B	⭐ 31.0k	MIT License	Compare ⚔️
cgtuebingen/ggnn	Cuda	Grade C	⭐ 175	Apache License 2.0	Compare ⚔️

Deep-Dive Profiles & Adoption Signals

karpathy / llm.c

Grade B

LLM training in simple, raw C/CUDA

⭐ 31.0k stars🔀 3.8k forks⚖️ MIT License💻 Cuda

cgtuebingen / ggnn

Grade C

GGNN: State of the Art Graph-based GPU Nearest Neighbor Search

⭐ 175 stars🔀 30 forks⚖️ Apache License 2.0💻 Cuda

How Does GitiGit Score Alternatives?

Our scoring engine evaluates 6 core dimensions including maintainer commit cadence, release frequency, security disclosures, and architectural quality.

Read the complete Scoring Methodology →