You might be managing your manifests manually - i.e. without a UI. You might be using jeremykross/konstellate. Lens/Octant/Kubevious/etc support manifest updating to a certain extent - but are more focused on runtime inspection of clusters.
Monokle gives you the visibility and flexibility to quickly and safely update your manifests.
When you need to:
Monokle can help by:
Understand resources defined in your manifest files/folders or your k8s cluster
Get a logical overview of all resources in your manifests or cluster and understand how they link and relate to each other
Edit manifests with maintained integrity and without having to look up yaml syntax or properties
Update manifests with context-sensitive guidance and integrity checks using both source and form-based editors
Debug resources generated with kustomize or Helm
Interactively preview resources generated by kustomize or Helm and debug their contents and relationships
Compare resources in your cluster to those defined in your manifests
See a diff between your local manifests and those in your cluster - and apply changes directly through the UI