There is a lot of EDA vendor activity in OpenAccess right now. Ciranova released PyCell Studio as a free product for creating OpenAccess PCells earlier this year. OpenAccess versions of both Cadence Virtuoso and Mentor Calibre are coming out over the next couple of months. This combination is particularly powerful, as it should allow Calibre to read the Virtuoso layout database without streaming out to GDSII.
Cadence has also announced new OpenAcccess products including its Precision Router and Physical Verification System (PVS). At DAC in July, other vendors previewed new OpenAccess layout editors, routers and DFM tools which will be available in the near future.