NuxUserGroups is a Zope product that adds the notion of groups of users. Groups provide a level of indirection in the user -> roles mapping, which provides greater flexibility. The groups are defined and managed in the User Folder. They are then used at the local roles level, where you can define an additional mapping of groups -> roles, thus giving the users who belong to these groups additionnal local roles. A workgroup can be defined simply and managed in a centralized manner.
JSpell is a server-based spell checker that allows you to spell check any HTML input field and form. It is i18n compliant and has dialogs for multiple languages available. It can be used to add spell checking capabilities to HTML forms on your Web site. This spell checker is compatible with JSP, ASP, CGI, PHP, Cold Fusion, Oracle Forms, etc.