Colima vs k3d
Colima
colima.runk3d
k3d.ioSide by side
| Figure | Colima | k3d |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | — | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 1 |
| Spec score · Local Kubernetes Tools | 8.6 (#2) | 8.1 (#7) |
| Spec score · Container Development Environments | 8.6 (#4) | 7.9 (#19) |
| Installation | The installation guide provides macOS and Linux installation options, including Homebrew and manual installation. | The maker lists installation options including GitHub release binaries, Homebrew, AUR, Chocolatey, Scoop, arkade, asdf, and Go. |
| Purpose | Colima provides container runtimes on macOS and Linux with minimal setup. | k3d is a lightweight wrapper for running k3s, Rancher Lab’s minimal Kubernetes distribution, in Docker. |
| Support | The project lists GitHub Discussions, GitHub Issues, announcements, and a #colima channel in CNCF Slack as community channels. | The overview directs users to the Rancher community Slack and its #k3d channel for discussion. |
Plans
In their own words
Colima
Colima runs container environments on macOS and Linux, with Docker, containerd, Kubernetes and Incus runtime options. Docker compatibility is intended to let existing Docker workflows and tools continue without changes; containerd users can use nerdctl for a Docker-like command line. It can launch a local, single-node k3s cluster, and users can select an exact K3s version. CPU, memory and disk allocations are configurable, and multiple isolated instances can run with different settings. Colima also documents GPU-accelerated AI workloads on Apple Silicon using Krunkit, with model runners supporting Docker AI Registry and HuggingFace; Ramalama also supports Ollama registries. Those workloads require Apple Silicon, macOS 13 or newer, and Krunkit, with at least 8 GB of RAM recommended. The AI containers are isolated from the host filesystem, other containers and network access unless network access is enabled. Colima is free and MIT-licensed, with installation options for macOS and Linux. Incus virtual machines require m3 or newer Apple Silicon.
k3d
k3d is a free, community-driven wrapper that runs k3s, Rancher Lab’s minimal Kubernetes distribution, inside Docker. It creates single-node and multi-node clusters for local Kubernetes development and can support hot-reloading, Tilt build-deploy-test workflows, and Drone CI service use. Docker is required, while kubectl is used to interact with clusters. For k3d v5.x.x, the overview specifies Docker v20.10.5 or later and runc v1.0.0-rc93 or later. A registries.yaml file configures registries, authentication, and certificates, and documentation covers local registries managed by k3d. Services can be exposed through Ingress or NodePort by mapping container ports to the host. Covered k3s integrations include CoreDNS, local-path-provisioner, Traefik, and the Klipper service load balancer. Installation options include release binaries, Homebrew, AUR, Chocolatey, Scoop, arkade, asdf, and Go. k3d runs on Linux, macOS, Windows, and self-hosted setups. It is not an official Rancher (SUSE) product.