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by aothms 1394 days ago
True. Came here to say that. QCAD is somewhat of an alternative to AutoCAD. OpenCASCADE is a foss alternative to e.g ACIS or Parasolid.

It's potentially important as there aren't that many projects from the 80s in the list, so maybe has an impact on the trend line.

(a trend line that would look similar if you look at time between proprietary alternatives I guess... a fact of the increasing amount of time spent on software engineering?)