Plugin events ordered by category

Admin area

Name	When
AddItemFormExtras	Somewhere inside the add item page or bookmarklet. Here, plugins can add their custom fields without having to alter one of the .template files.
AdminPrePageFoot	On admin area pages, immediately before the page footer is printed.
AdminPrePageHead	On admin area pages, immediately before the page head is printed. This event could be used to add extra script/css includes in the head section
BlogSettingsFormExtras	On the blog settings page. You can add your own forms here.
BookmarkletExtraHead	Somewhere inside the head section of the bookmarklet XHTML code.
EditItemFormExtras	Somewhere inside the edit item page or bookmarklet. Here, plugins can add their custom fields without having to alter one of the .template files.
GeneralSettingsFormExtras	On the general settings page. You can add your own forms here.
MemberSettingsFormExtras	On the member settings page. You can add your own forms here.
PreAddItemForm	Immediately before an add item form (bookmarklet or admin area) is created.
QuickMenu	At the end of the Admin Area quick menu. This can be used to add extra plugin entries. To add entries, push associative arrays on the options array. An example can be found in the section about creating a plugin admin area.

Name	When
PostAddBan	Immediately after a new ban has been added
PostDeleteBan	Immediately after an IP ban has been deleted from the database
PreAddBan	Immediately before a new ban is added to a weblog
PreDeleteBan	Immediately before an IP ban gets deleted from the database

Name	When
PostAddBlog	Immediately after a new blog has been created
PostBlogContent	After blog content has been inserted through a skinvar
PostDeleteBlog	Immediately after a blog has been deleted from the database
PreAddBlog	Immediately before a new blog is created
PreBlogContent	Before blog content has been inserted through a skinvar
PreDeleteBlog	Immediately before a blog gets deleted from the database

Name	When
PostAddComment	After adding a comment to the database
PostComment	After a comment has been shown
PostDeleteComment	Immediately after a comment has been deleted from the database
PreAddComment	Before adding a comment to the database
PreComment	Before a comment is shown
PreDeleteComment	Immediately before a comment gets deleted from the database
PrepareCommentForEdit	After a comment is retrieved from the database, and before it is presented to the user to be edited.
PreUpdateComment	Immediately before a comment is updated and saved into the database

Name	When
PostDateFoot	After a date footer has been parsed
PostDateHead	After a date header has been parsed
PreDateFoot	Before a date footer is parsed
PreDateHead	Before a date header is shown

Name	When
FormExtra	Inside one of the comment, membermail or account activation forms. This event allows plugins to insert extra fields in the form. This event corresponds with the ValidateForm event that is fires when the form is handled.
ValidateForm	Called when one of the comment, membermail or account activation forms is being handled. This event allows plugins to perform their own validation on the data, and prevent further handling if something is wrong. When used together with the FormExtra field, it can be used to add extra fields to forms.

Name	When
PostAddItem	After an item has been added to the database
PostDeleteItem	Immediately after an item has been deleted in the database
PostItem	After an item has been parsed, but before the item footer has been parsed
PostMoveItem	Immediately after an item has been moved to another blog/category
PreAddItem	Immediately before an item is added to the database
PreDeleteItem	Immediately before an item gets deleted in the database
PreItem	Before an item is parsed, but after the item header has been placed
PreMoveItem	Immediately before an item is moved to another blog/category
PrepareItemForEdit	Called after getting an item from the database, and before presenting it to the user to be edited.
PreUpdateItem	Immediately before an item gets updates in the database

Name	When
LoginFailed	After a failed login
LoginSuccess	After a successful login
Logout	After logout
PostAuthentication	After the login procedure has been completed. This occurs on each page request.

Name	When
PostAddTeamMember	Immediately after a member has been added to a blog team
PostDeleteMember	Immediately after a member has been deleted from the database
PostDeleteTeamMember	Immediately after a member has been deleted from a weblog team
PostRegister	After a new user has registered
PreAddTeamMember	Immediately before a member gets added to a blog team
PreDeleteMember	Immediately before a member gets deleted from the database
PreDeleteTeamMember	Immediately before a member gets deleted from a weblog team

Name	When
PostSkinParse	Immediately after parsing a skin
PreSkinParse	Immediately before the parsing of a skin begins

Name	When
PostAddPlugin	Immediately after a plugin has been added
PostDeletePlugin	Immediately after a plugin has been deleted from the database
PostPluginOptionsUpdate	After the options for a plugin have been updated.
PreAddPlugin	Immediately before a plugin is added
PreDeletePlugin	Immediately before a plugin gets deleted from the database
PrePluginOptionsEdit	Before the 'edit plugin options' form is created.
PrePluginOptionsUpdate	Before the options for a plugin have been updated. (using this event you can validate/change the new value for an option)

Name	When
PostAddSkin	Immediately after a new skin has been created
PostDeleteSkin	Immediately after a skin has been deleted from the database
PreAddSkin	Immediately before a new skin is created (note: this one also gets called when a skin is cloned))
PreDeleteSkin	Immediately before a skin gets deleted from the database

Name	When
PostAddTemplate	Immediately after a new template has been created
PostDeleteTemplate	Immediately after a template has been deleted from the database
PreAddTemplate	Immediately before a new template is created (note: this one also gets called when a template is cloned))
PreDeleteTemplate	Immediately before a template gets deleted from the database

Name	When
ParseURL	Before an URL is interpreted by the system
GenerateURL	Before an URL is generated by the system

Name	When
ActionLogCleared	After the action log has been cleared
PreSendContentType	Immediately before a content type is being set in the HTTP header

Name	When
PostAddCategory	Immediately after a new category has been created in the database
PostDeleteCategory	Immediately after a category has been deleted from the database
PostMoveCategory	Immediately after a catgeory has been moved to another blog
PreAddCategory	Immediately before a new category is created in the database
PreDeleteCategory	Immediately before a category gets deleted from the database
PreMoveCategory	Immediately before a catgeory is moved to another blog