phpIPAM - phpipam is an open-source web IP address management application (IPAM).
Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
BlueCat DDI - Unify your DDI (DNS, DHCP and IPAM) solutions to make DDI data an engine for innovation and growth.
Redgate SQL Data Compare - Use Redgate SQL Data Compare to compare and synchronize static, lookup, and reference data in your SQL Server database - try it free
HaCi – IP Address Administration - HaCi – IP Address Administration is an effective networking tool that stores its data in relational Databases and uses a tree-like structure to illustrate subnets.
DataWeigher - The DataWeigher is the tool to compare and synchronize data.