The Sidecars plugin automates the creation and management of companion 'sidecar' notes for attachments and other files within your vault. It monitors user-defined file types, allowing automatic or on-demand sidecar generation via the File Explorer context menu. Features include visual styling for sidecars in the explorer, orphaned sidecar detection with cleanup prompts, and folder scoping using wildcards or regular expressions. Advanced users can integrate it with external tools like Blend Vault for managing linked relationships.