O&O Syspectr is a powerful tool for remotely managing PCs and servers from your browser.
To use the program you must first install the Syspectr client on your target systems. This must be done manually - there are no "push" options - but it's easy enough, a sub-3MB download which simply adds an extra service to the PC (there's no other visible sign of its presence).
Log in to your free account at syspectr.com and you're able to view details on all your monitored systems: running processes, installed software, Windows security issues (UAC turned off, missing antivirus software, a failing firewall), connected USB devices, basic hard drive details (space free/ used, S.M.A.R.T. status), and more.
Not enough? O&O Syspectr also allows you to remotely shut down or restart the target systems, or you can access them directly via Remote Desktop and Remote Console modules. These seem basic - we couldn't see any option to directly transfer files between the local and remote systems, for instance - but otherwise worked well.
And if all this sounds a little too "hands on", it doesn't have to involve that much work. Log on occasionally and you're able to access a list of recent events for each target computer. There's also an "e-mail notification" option, although we couldn't see any explanation of how that's supposed to work.
We spotted one or two issues with Syspectr. The Remote Desktop window can't be launched from Internet Explorer 11, unless you turn off the pop-up blocker. Event and other times appear to use CET, rather than being localised to the time zone of the user. Some interface elements still use the original German ("Zeitraum" on the History display, while another dialog sternly warned us "<email address> ist mit diesem Rechner verbunden"). There's no significant help, either.
Still, the core Syspectr functionality works well. The free version is surprisingly capable, allowing you to manage up to 10 PCs. The paid version adds more (server and virtual machine monitoring, unlimited email notifications, unlimited remote desktop sessions, phone support). It's reasonably priced at a monthly 1 Euro ($1.36) per PC, 5 Euros ($6.80) for each server, and there's a no-strings 30-day trial available, no credit card required.