automation software bot for a social website

Hello, We need an automation software bot for a social website with the following features: 1) Support proxy/socks5/http/https / (with the ability to load a list with users) 2) ability to changing the User-Agent 3) html comment post 4) Multi Threading that further speeds up the bot 5) An option to don't post comments to friends(users) that have been already sent 6) Proxy Feature 7) Gather random lines/words from given files and send it in the comment to make it different from others 8) Import from a text file the users list User agent: Mozila, Chrome/24.0.1312.57 IE Platform: Windows 7