They are a web hosting company that specializes in virtual private servers. This means you would receive what looks like an entire server dedicated to your use, but it is really a slice of an existing server. This allows the hosting company to still implant multiple accounts per physical server while giving you full control over your hosting service.
They offer both Windows and Linux based virtual private servers.
This does mean you're on your own for installing services and keeping the server running. However Pandela offers additional support levels with gradually higher levels of monitoring and support time.
They are also 'green' through partnering with CarbonFund.org to offset their carbon footprint.