I like Nitrous (nitrous.io/) - they have just reintroduced a free plan. I use it to code C++. It's nowhere near the levels of VS2015, obviously, but it allows

I like Nitrous (nitrous.io/) - they have just reintroduced a free plan. I use it to code C++. It's nowhere near the levels of VS2015, obviously, but it allows me to have a free dev box in the cloud.