We are currently using IPAM so monitor and organize all of our IP addresses. This addresses the issue of IP address organization and VLAN management. It allowed us to delete all of our IP spreadsheets as well as simplify the DNS and DHCP management in our organization. We also use IPAM to ensure we have adequate space for the future.
Solarwinds IPAM is really good at logging all your IP addresses and is most suited for medium-large businesses but small businesses would definitely see a benefit as well. The reason I say this is because managing IP addresses take a lot of effort and with IPAM the process is completely automatic.