1. Deployment: One key difference between Atom and Docker Compose is that Atom is a text editor primarily used for writing and editing code, while Docker Compose is a tool for defining and running multi-container Docker applications.

2. Use Case: Atom is more suitable for individual developers or small teams who need a simple, yet powerful text editor for coding, whereas Docker Compose is designed for DevOps teams or system administrators who need to manage and orchestrate complex Docker applications.

3. Functionality: Atom provides features like syntax highlighting, code folding, and version control integration to enhance code editing, while Docker Compose allows users to define multi-container applications, manage services, networks, and volumes, and simplify the deployment process.

4. Integration: Atom can be integrated with various plugins and packages to extend its functionality and customize the editor based on user preferences, whereas Docker Compose integrates with Docker Engine to orchestrate containers and manage their configurations through a single YAML file.

5. Scalability: Atom is more suitable for smaller coding projects or personal use due to its focus on code editing, while Docker Compose is ideal for scaling up applications, managing dependencies between containers, and automating the deployment process in a production environment.

6. Community Support: Atom has a large community of developers contributing plugins, themes, and support through forums and documentation, while Docker Compose benefits from the broader Docker community, including official resources, forums, and third-party tools for container management and orchestration.

In Summary, Atom is a text editor focused on code editing, while Docker Compose is a tool for defining and running multi-container Docker applications with advanced orchestration capabilities.