A: No. It is not open source. Any "free" download is a cracked copy.
Technically, yes. Nedgraphics Texcelle 2009 is still copyrighted intellectual property of Lectra (which acquired Nedgraphics in 2017). Even though the software is no longer sold as a standalone product, downloading a "fixed" version without a valid license key constitutes software piracy.
A: The original cannot. A "fixed" version might with compatibility mode, but expect crashes.
A: No. It is not open source. Any "free" download is a cracked copy.
Technically, yes. Nedgraphics Texcelle 2009 is still copyrighted intellectual property of Lectra (which acquired Nedgraphics in 2017). Even though the software is no longer sold as a standalone product, downloading a "fixed" version without a valid license key constitutes software piracy.
A: The original cannot. A "fixed" version might with compatibility mode, but expect crashes.