Download of PSI-Chart 1.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This software was originally developed by Poly Software International, Inc. PSI-Chart lies within Development Tools, more precisely IDE. The most popular version among PSI-Chart users is 1.0. We recommend checking the downloaded files with any free antivirus.
From the developer:
PSI-Chart is an Active X chart component for creating and designing scientific and engineering chart applications with Visual Basic, Visual C++, C#, or other language compilers which support the COM model. With PSI-Chart, you can develop your own professional charting application in minutes.
You may want to check out more software, such as PBDoc UNICODE Including PB10.5 & PB9.0.2 VM, GpProfile or Developer Express Refactor! Pro, which might be related to PSI-Chart.