The Software Development Kit (SDK) for Act! is used by developers that wish to create 3rd party applications that will utilize the Act! database. The Act! platform consists of feature-rich components that are highly extensible and built on the .NET Framework. As a development platform, Act! meets Act!'s historically rich customization, personalization, and integration goals. Where Act! seeks to empower end users to mold the product to their business, the Act! SDK helps third parties extend that courtesy and vision through independent development.