Harvey Katmar, a respected member of this forum, has some good freeware available on his site
which I use often, both the turbine steam flow program, and the Uconeer units conversion program as well as the WASP limited use program, too (I guess it is still free).
Graham at
has a free jet and LRVP sizing software called Vacworks II, which also has some good mollier programs, gas data, and conversions too.
The next one is not freeware in the sense that I can down load it, but it is free in the sense I can use the software, and it is the multi-effect evaporator sizing station at
They have recently changed it to allow user selectable "K" values, and that makes it real nice. There are also a couple other handy softwares on this site that I use from time to time.
There is a good turbine sizing tool that I use frequently at
and
has some real good tools available at this site.
These come to mind right now.
rmw