Simplify the following text for a Grade 9 native English-speaking person.
Original: Parts of this table are based on the SeaMonkey release notes , the roadmap and the meeting notes . SeaMonkey consists of a web browser ( SeaMonkey Navigator ) , which is a descendant of the Netscape family , an e-mail and news client program ( SeaMonkey Mail & Newsgroups , which shares code with Mozilla Thunderbird ) , an HTML editor ( SeaMonkey Composer ) and an IRC client ( ChatZilla ) .
Simplified: The SeaMonkey Council continued developing it instead , but they had to rename it to SeaMonkey .