TYPO3 Core

Existing tree components that are
not using ExtJS are mainly within
the ElementBrowser and the FolderTree,
which is the navigation component inside filelist.

However, the "old" version of the original pagetree
still exists, and has support for IE5.5 as well, and
an option to filter for items within the pagetree (please
note: this feature was never added to the foldertree).

The old pagetree navigation component itself is now
deprecated (it can still be used in own modules). The
filter functionality is completely removed in the
old pagetree.

The necessary JavaScript code for drag+drop and
expand/collapse of the tree was migrated to RequireJS.