google/zerocopy

Health v2 · maintenance only

Flags: no_readme

Adoption not part of the score

2565 stars · 176 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A Rust library providing safe, zero-cost APIs for casting between byte sequences and typed values without copying memory. It encapsulates the unsafe transmutation logic so developers can perform zero-copy parsing and serialization without writing unsafe code themselves.

Use cases

• parse network packets without copying bytes
• deserialize structs from raw byte buffers safely
• convert between byte slices and typed views
• avoid writing unsafe transmute code in Rust
• build zero-copy file format parsers
• interpret memory-mapped files as Rust structs

When to choose

• you need zero-copy parsing or serialization in Rust with memory-safety guarantees
• you want to replace hand-written unsafe transmute code with audited safe APIs
• you're building performance-critical parsers for network protocols or file formats

When to avoid

• you're working in a language other than Rust
• your data can be copied cheaply and standard serde serialization suffices
• you need schema-driven serialization with versioning rather than raw memory casting

Facets

library · maturity stable

serialization parser developer-tools programming-languages performance developer-tools rust cross-platform embedded zero-copy memory-safety unsafe-rust type-punning transmute no-std

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