I never used it, so I cannot comment on the technological nature of Adegga, but I imagine it's as technological as any other social network.
Outsystems seems to be pretty successful, yeah. But it's a software development platform, in which you drag an "if" block from a palette and drop it in a canvas. Most people prefer typing "if".
On the other hand Outsystems is one rare example of successfull, portuguese technological product.