DPSF 2.5 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. DPSF lies within Development Tools, more precisely IDE.
The following versions: 2.5, 2.0 and 1.0 are the most frequently downloaded ones by the program users. This free program was originally developed by Daniel Schroeder. DPSF Demo.exe is the common file name to indicate the DPSF installer. Some of the program aliases include "DPSF Demo". We recommend checking the downloaded files with any free antivirus.
From the developer:
DPSF (Dynamic Particle System Framework) is a free programmer's tool for creating custom particle systems in XNA quickly and easily.
Incorporate particle effects into your project within a matter of minutes by using the provided Default Classes.
You may want to check out more software, such as GnuWin32: LibIconv, SplitPaneDemo or Demo for JIDE Products, which might be similar to DPSF.