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 XSCHEM HISTORY
  
   
    - Started in 1998 as a hobby home project when i was working at STM.
- First versions were developed on Solaris Sparc, then on linux.
- Subversion local repository in 2007.
- Sourceforge svn repository in December 2016.
- Development boost happened in 2018 to present:
       - More graphic primitives (polygons, arcs, circles).
- Automatic 'configure' configuration.
- standard location of installed files / docs / rcfiles.
- Lot of improvements and bug fixes.
- Some small startups start using Xschem in 2019, getting feedbacks, bug reports and requests for improvements.
- Succesfully simulated designs (even complete systems) on 
     NGSPICE, 
     Xyce, HSPICE, 
     Icarus Verilog, ModelSim, 
     GHDL. Generic interface to simulation engines added in 2019.
    
- Bindings for Gtkwave,  Gaw (Gwave improvement)  for waveforms in 2019.
- Adding bindings to other simulators (free/proprietary) and viewers is extremely simple (edit simrc file).
- In 2020 created github repository, Joined the Skywater Free and Open source Silicon Initiative (FOSSi), 
        created symbol libraries for the 130nm process node, get lot of user feedback.