TierDeveloper - Version 4.0 TierDeveloper simplifies the complexities of N-Tier Applications and lets you develop real-life applications in matter of days instead of months. TierDeveloper Windows Edition lets you map middle-tier data objects against database tables and generate fully functional MTS COM/COM+ components using VB or C# language. It helps you accelerate N-tier enterprise application development against MS SQL Server, Oracle and IBM DB2 database servers. It also generates an ASP Test Web application.