Probot, a Node.js framework for building GitHub Apps, can help improve an open source project by automating tasks and enhancing communication with new contributors. Probot apps can welcome new contributors, enforce community norms, and streamline workflows. Six specific Probot apps discussed in the article are All Contributors Bot, Prosebot, Welcome Bot, Stale, No Response, and Auto Assign. These tools can aid open source maintainers by automating tasks, reducing the burden of manual work, and promoting inclusivity and productivity. By leveraging Probot and its ecosystem of open source apps, developers can create a more efficient and welcoming environment for their projects.