ManyMe makes protecting your privacy with disposable email addresses amazingly simple, and it's free, though it's not compatible with every email system.
Burner Mail protects your real email address behind disposable burner addresses. It gets the job done, but some competitors do a lot more to protect your privacy.
Whether you use its extension or switch entirely to its own hardened browser, Ghostery Privacy Suite blocks ads and trackers and keeps your searches private for free.
Webroot Premium gets you five security suite licenses and protection for one identity, but both its security and identity components are merely good, not great.