PretaWeb has developed the following add-on products which have been contributed to the Plone community code.
PasswordStrength
Validate passwords against admin supplied rules
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LoginLockout
LoginLockout is a PAS plugin that prevents users from loging in after 3 failed login attempts
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BiReference
Implements BiDirectional/Unidirectional references in Archetypes. Acts as a drop in replacement for ReferenceField and BackReferenceField and is perfect for self referential relationships.
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SearchReferenceWidget
An AJAX/LiveSearch AT field for references. Useful for large numbers of targets.
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