I tried all 3 netbox, nipap and phpipam as a gui user and I like the phpipam the best as it has most knobs and features and is very intuitive, (can't comment on the api richness, yet) But what is strange is that none of these tools provides RT (or extended/standard communities or even vlan for that matter) management the way they provide IP management, that is allow one to create custom pools and then have the next free resource allocated from a pool if needed.
adam
