Thanks for your question.
DFM Now can be freely used for viewing and will open FAB 3000 workspace files (*.wrk), Gerber, NC, ODB++, and IPC-2581.
Please download our free "DFM Now!".
Did You Know?: DFM Now is one of the most popular Gerber viewers, used worldwide by thousands of Engineers and designers.
We have 1 license of Fab 3000 that we use regularly.
My question is, do you have a free version that we can use just for viewing?
Maybe a demo version without all the features that won’t expire?