CookBookTemplateTagTranslation - Easy translation.

CookBookTemplateTagRegroup - Using Regroup to order by category on a single table.

ExprTag? - Calculating python expression and saving the result to a variable.

CatchTag? - Catching the content and saving it to a variable.

CallTag? - Just like include, but can pass parameters to it.

PyifTag? - Just like python if expression.

PyCallTag? - Directly call python function or attribute of a module

ColumnizeTag - Put stuff into columns, with row and cell class support.

PaginatorTag - Inclusion tag for generating pagination controls with first/last and adjacent page links when using the object_list generic view.