I just ran Malwarebytes Anti-Malware (the free version) on my computer for the first time in a couple of months. It scanned 548772 objects, so I guess I’ve been more productive than I thought! I also have AVG AntiVirus (free) installed, occasionally run an older version of AVG PC Tuneup (they haven’t charged me anything to keep using it), and use EaseUS Todo Backup (free). Those are some good options, although they are less “cloud”-oriented than some of you may like. They are also not exactly fast, so run them overnight.