Post Tiles is a free wordpress plugin that displays your posts in a tiled grid. The tile includes the title and an excerpt of the post. The excerpt can be either the first x number of characters from the post or you can use the custom excerpt field while creating a post to specify what text appears in the excerpt.
Advanced admin settings allows control over whether Post Tiles layout is based on fixed width and height or toggle on responsive design which responds to browser size.
Post Tiles also allows admin control over whether or not to use featured images and what type of animation style should be used.
Consider buying me a cup of coffee for the development of this plugin.