Cloud Native Buildpacks Pack vs Skaffold

Cloud Native Buildpacks Pack is a free command-line tool for building applications with buildpacks and rebasing the resulting application images. It is maintained by the Cloud Native Buildpacks project and is also available as a Go library. Buildpacks turn application source code into container images that can run on any cloud. Listed capabilities include caching, automatic source detection, modular buildpacks, support for multiple languages and processes, minimal images, reproducible builds and reuse of community buildpacks. Pack supports multi-architecture builds and multiple build-cache backends, and the project lists build-time software bills of materials in CycloneDX, SPDX and Syft JSON formats. The CLI runs on Linux, macOS and Windows; installation options include package managers, container images, scripts and manual installation. Builds need a containerized environment and a daemon such as Docker or Podman, and some setups may need the local Docker socket mounted. The project documents CircleCI, GitLab Auto DevOps and Tekton integrations, as well as kpack for Kubernetes-native builds and image updates. Pack is Apache-2.0 licensed.

Skaffold is Google’s open-source project for building, pushing and deploying applications. It runs client-side and has no component installed on a cluster. In development mode, it watches source files and can rebuild images, synchronize files, test images and redeploy when changes are detected. Its command-line interface can build, test, render, apply, deploy and clean application artifacts. Listed capabilities include policy-based image tagging, resource port-forwarding, logging and file syncing. Builder integrations include Docker, Jib, Bazel, custom builders, Buildpacks and ko. Deployment options include kubectl, kpt, Helm, Docker, Google Cloud Run, Kustomize and Render. Cloud Code provides extensions for Visual Studio Code and JetBrains IDEs. Skaffold supports Linux, macOS and Windows and is listed at free as an open-source project with standalone CLI and IDE integrations. It checks Google servers for updates by default, although that check can be disabled. Installation documentation says anonymized usage data is collected with an opt-out. Its gRPC server is not compatible with HTTPS.