Yes, I have a couple of third-party file managers installed on my N950. They work great, but with the stock browser being closed source, it looks like it will never be possible to perform a simple task like uploading an image file via the browser (unless you use an alternative browser like Firefox, which is OK, but sluggish in performance compared to the stock browser). I suppose Nokia would say that there's 'an app for that'. The problem is that there are many sharing services that will not be supported by plugins or applications, so there is still a need for that functionality IMO. Nokia, I am disappoint.