Simple Writer PRO WordPress Theme has Ajax powered featured posts widget, tabbed widget, about and social widget. Every widgets has many options and easy to configure. You can use featured posts widget and tabbed widget to display a Recent/Category/Tag/PostIds based posts. These posts can be displayed according to Number of Comments/Published Date/Modified Date or random order.
Go to your WordPress Dashboard -> Appearance -> Widgets.
Drag and drop these widgets to suitable widget areas.
You can check live preview of each widgets using the links given below: