SharePoint Permission Boost which contains SharePoint Column/View Permission, SharePoint Item Permission Batch and SharePoint Permission Workflow is one powerful permission solution for SharePoint list.
SharePoint Permission Boost
* Make SharePoint Columns invisible or read-only to certain people;
* Make SharePoint Item Attachments invisible or read-only to certain people;
* Make SharePoint list views invisible or read-only to certain people;
* Auto-assign permissions to all SharePoint list items by permission workflow;
* Auto-assign permissions to SharePoint user/group field columns;
* Auto-change SharePoint item permissions when item is created or modified;
* Add or remove some permission to all items in a SharePoint list;
* Inherit permission from parent list permission when custom permission setting is unnecessary.
