crun ☆
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Description:
Fast and lightweight fully featured OCI runtime and C library
Type: Formula  |  Latest Version: 1.25.1@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: Devops
Tags: containers oci kubernetes devops c runtime
Install: brew install crun
About:
crun is a high-performance OCI runtime written in C, designed for running containers with minimal overhead and maximum efficiency. It excels in environments where speed and low resource consumption are critical, such as serverless platforms and edge computing. Its small footprint and fast startup times make it an ideal replacement for heavier runtimes like runc.
Key Features:
  • Ultra-fast container startup times
  • Low memory footprint and minimal resource usage
  • Full OCI runtime specification compliance
  • Written in C for maximum performance and portability
  • Support for systemd integration and cgroup v2
Use Cases:
  • Accelerating serverless function execution (e.g., Kubeless, OpenFaaS)
  • Deploying containers on resource-constrained edge devices
  • General-purpose container execution in Kubernetes clusters
Alternatives:
  • runc – The default OCI runtime; more widely used but has a higher memory footprint and slower startup than crun.
  • containerd-shim-wasm – Specialized for WebAssembly workloads, whereas crun is a general-purpose OCI runtime optimized for Linux containers.
Version History
Detected Version Rev Change Commit
Oct 14, 2025 9:50am 0 VERSION_BUMP 5871b94d
Sep 9, 2025 10:56pm 0 VERSION_BUMP cc35f9ad
Dec 17, 2024 10:54pm 0 VERSION_BUMP 00a757a5
Nov 17, 2024 8:37pm 0 VERSION_BUMP 4ad37545
Oct 31, 2024 6:30pm 0 VERSION_BUMP 926b0a6d
Oct 30, 2024 12:31pm 0 VERSION_BUMP c0c3660a
Oct 22, 2024 3:29pm 0 VERSION_BUMP d268356d
Oct 12, 2024 11:19am 0 VERSION_BUMP 78c6b06d
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