Editing PSOS (real-time operating system) (section)

==Migration away from pSOS==
In March 2000, rival company [[Express Logic]] released their Evaluation Kit for pSOS+ users, designed to provide a migration path to its [[ThreadX]] RTOS.

During August 2000, MapuSoft Technologies Inc. came up with the pSOS OS Changer porting kit which can smoothly move the software to multiple OS such as [[Linux]], VxWorks, and more. It includes an ''[[integrated development environment]]'' (IDE) and ''application programming interface'' ([[API]]) optimization along with a profiling tool to measure API timing on target boards (www.mapusoft.com). 

In August 2007, RoweBots, a former partner of SCG and ISI, [[open source]]d their pSOS+ compatible version called Reliant. It is available to all that wish to upgrade without application changes.

The [[Xenomai]] project supports pSOS+ APIs (and others traditional RTOS APIs) over a Linux-based real-time framework to allow existing industrial applications to migrate easily to a Linux-based environment while keeping stringent real-time guarantees.

Another open sourced alternative is [[RTEMS]], which has support for various APIs, including the "Classic API" (compatible to pSOS) and the POSIX API. Compared to Linux, RTEMS is a closer match to pSOS applications due to its lower memory size and its strict realtime behaviour.

Popular ''Secure Sockets Layer'' (SSL), now ''[[Transport Layer Security]]'' (TLS), libraries such as [[wolfSSL]] still support pSOS.