Elastic-package is an open-source tool designed to streamline the development process of Elastic Stack integrations by providing pre-built commands for tasks such as linting, formatting, testing, building, and promoting packages. Developers can utilize elastic-package either by downloading the binary or cloning the GitHub repository, with the option to integrate it into their PATH for easier command line access. The tool facilitates starting a local Elastic Stack quickly, assuming Docker Desktop is running, by using simple "stack up" and "stack down" commands to manage containers for Elasticsearch, Kibana, Fleet, Elastic Agent, and the Package Registry, all within a Docker network for seamless communication. This setup allows developers to experiment with and test their integrations locally, and the tool's verbose mode can assist in troubleshooting any issues, particularly those related to Docker memory settings.