This software offers Delphi and C++ Builder components that enable serial communication with devices connected to Windows port. Featuring multithreading and overlapping, it maximizes performance while being easy to use and highly powerful.

One of the standout features of this component is its use of multithreading and overlapping to ensure maximum performance. This means that developers can rest assured that their applications will be able to communicate with various devices in a fast and efficient manner.
Additionally, this component is compatible with a range of different versions of Delphi / C++ Builder, including versions 5 through XE4, as well as Lazarus 1.0.8. Plus, for those who want to dig deeper, the full source code is included in the full version.
Furthermore, developers can enjoy royalty-free distribution in their applications, which is definitely a plus. And if your company has multiple developers working on projects that require serial communication, there's even a multilicense available.
Overall, if you're looking for a solid component for serial communication with devices connected to the serial port, this one is definitely worth considering.
Version 3.9:
added Delphi/C++ Builder XE4 files,
added Lazarus demo example