can someone suggest me some plugin or something to instal

Hello, can someone suggest me some plugin or something to instal on my site that allows visitors to subscribe or to follow blogs on my network, or just to appear to them "Blogs i like" or "Blogs that i recently visited" or maybe to follow juts users or somthing BUT that CANT be buddypress because when i instal buddypress i have preblem with register page it close option to visitors to open blog on my network