On March 10 , 2005 the Mozilla Foundation said , they will not develop the Mozilla Application suite which included the Netscape web browser , because Firefox and Thunderbird are more popular and because of that are important for them . The SeaMonkey Council continued developing it instead , but they had to rename it to SeaMonkey . In effect , this meant that the suite would still continue to be developed , but now by the SeaMonkey Council instead of the Mozilla Foundation .