> "According to Lee Nackman, Chief Technology Officer of IBM's Rational division (originating in 2003) at that time, the name 'Eclipse' (dating from at least 2001) was not a wordplay on Sun Microsystems, as the product's primary competition at the time of naming was Microsoft Visual Studio, which Eclipse was to eclipse." [1]
[1] https://en.wikipedia.org/wiki/Eclipse_(software)#Name