Simplify the following text for a Grade 10 native English-speaking person.
Original: HotJava ( later called HotJava Browser to distinguish it from HotJava Views ) is a modular , extensible web browser from Sun Microsystems implemented in Java . It was the first browser to support Java applets , and was Sun 's demonstration platform for the then new technology .
Simplified: HotJava is a web browser from Sun Microsystems that can execute Java applets .