Act vs bat

act is an open-source command-line tool that runs GitHub Actions workflows locally using Docker containers. It reads workflow files from .github/workflows/ and executes them with environment variables and filesystem configurations matching GitHub's hosted runners. The tool enables fast local feedback on workflow changes without requiring commits and pushes to a remote repository.

bat is an open-source command-line tool written in Rust that serves as a replacement for the Unix cat command with syntax highlighting, line numbers, and Git integration. It automatically pipes output through a pager for large files.