Cloud Native Buildpacks Pack vs Tilt

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.

Tilt is a free, open-source development environment for teams building microservice applications that deploy to Kubernetes. It watches files, builds container images and updates the development environment when code changes. Its live_update feature deploys changes to running containers in seconds, including compiled-language code or dependency changes. Tilt can start the application and automate rebuilds, with logs, broken builds and runtime errors in its feedback loop. Its UI collects service logs and shows the development environment's state.

Teams configure services and workflows with Tiltfiles using Kubernetes YAML and Docker images; documentation also describes integrating Bazel builds. Tilt has an extension system for sharing Tiltfile functionality, such as team scripts and custom buttons, and provides editor support for VS Code, selected JetBrains IDEs and other editors through an embedded language server. It runs on macOS, Linux and Windows. The standard setup requires Docker, kubectl and a local Kubernetes cluster, though workflows can also use options such as Helm, Podman or local processes. Tilt is maintained as open source by Docker, Inc. under the Apache-2.0 license and costs nothing.