Similar plugins

In alphabetical order:

• DirectEdit
• Fluid Accessible Inline Edit
• WP Inline Edit
• WP Raptor
• WP User Frontend

Abandoned:

• Inline Editor
• JE Editable

For creating posts etc.:

• Post From Site
• PostHaste
• wp-frontend-uploader
• Revisionary - allow users to submit edits for approval

Other CMSes:

• django-inplace-edit