Набор инструментальных средств для разработки программ, совместимых с DesqView 2.0. Включает в себя ряд утилит и интерфейсные библиотеки для ASM/C/TP.
Using the DESQview 2.0 API, a program can use all the DESQview 2.0 menu functions available to the user as well as the power-packed capabilities built into DESQview--multitasking, windowing, intertask communications, mailboxes, shared programs, memory management, mousing, data transfer, menu-building, and help.

Примеры совместного использования памяти одновременно несколькими процессами под управлением DesqView. Приведены исходники на C и Pascal.
Examples of share memory/data with another process under DesqView.
- allocate and deallocate shared memory.
- receive from another process the address of shared data.
- read from and write to shared memory.
- mail to another process the address of shared data.
- control access to shared data via mailbox semaphore.