It should be an IoT integration framework, which has 3,3 MB. That sound huge to me. If I have an embedded processor that has 1 MB of Flash, than that is already huge. Still this has to fit my application besides that framework.
"Build IoT applications that run on edge devices..."
The moment I see "runs on Raspberry Pi", I know they haven't done any thinking about low cost or low power consumption edge nodes. Get back to me when it can run on a CortexM0 with 128KiB of flash.
Now, we will likely end up doing a whole lot less functionality on an M0 profile, compared to a typical Flogo flow app on an IoT gateway, but the idea is to offload the right level & kind of edge compute onto lower power nodes.
One point worth mentioning is that pretty much any framework can run on a Pi, but running dozens of these Edge apps - "12-factor" style[1], that is where Flogo's advantage shines through.