Zig — General-Purpose Programming Language and Toolchain

What Zig Does

• No hidden control flow — no operator overloading, no exceptions, no implicit allocations
• Manual memory with allocators — all allocation is explicit; pass allocators as parameters
• Comptime — compile-time evaluation for generics, type reflection, code gen
• Error union types — !T return types replace exceptions
• C ABI interop — call C directly, compile C with zig cc
• Cross-compile — any target from any host, no extra toolchain
• Build system — zig build replaces make/cmake
• Safety modes — Debug, ReleaseSafe, ReleaseFast, ReleaseSmall
• Async/await — cooperative multitasking (frozen in recent versions)

Architecture

Compiler built on top of LLVM (Zig also has a self-hosted backend in progress). Comptime is the star feature — Zig runs normal Zig code at compile time for generics, type transformation, and code generation. Zig cc uses Clang and bundled libc headers for turnkey C/C++ cross-compilation.

Self-Hosting

Language toolchain.

Key Features

• Simpler than C++, safer than C
• Explicit memory allocators
• Comptime metaprogramming
• Error union types
• Cross-compile everywhere
• Zig as a C/C++ compiler
• Build system built in
• Great stack traces in Debug mode
• WebAssembly target
• Bit-packed structs

Comparison

FAQ

Q: Zig vs Rust? A: Rust pursues compile-time memory safety (borrow checker); Zig pursues simplicity and readability, keeping manual memory management but adding tooling (GPA memory checker). Zig is easier to learn, Rust is safer.

Q: Is it stable yet? A: Not yet at 1.0. Stability is improving rapidly in v0.13+. Production projects like Bun and TigerBeetle use it.

Q: Why can it act as a C compiler? A: Zig ships LLVM + Clang + a complete set of libc headers, so zig cc can cross-compile C/C++ to any LLVM-supported target with zero config.

Sources

• Docs: https://ziglang.org/documentation
• GitHub: https://github.com/ziglang/zig
• License: MIT