To note, I started this as a frustration to current VPS providers. I wanted a minimalist, straight to the point, fast deploying VPS service with no bullshit.<p>Myself and another developer ended up creating our own provider from scratch with our own equipment co-located at a reliable DC.<p>In all we used:
Back-end: libvirt + kvm virtualization + ruby + go
Front-end: siantra (control panel), WHCMS (billing), all integrated into one (sinatra is reversed proxied via lighttpd)
Background / workers: resque + goworkers + some ruby workers<p>We're the first to introduce Atomic Project images.<p>We're still developing and continuing to add features. One of them being hourly billing as well as scaling.