ClassViewer v3 is a lightweight Java class file viewer only depends on JDK and JavaFX, it only has a single jar file less than 250k in size, and it can work on JRE 8.
ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files
日历、公历(阳历)、农历(阴历、老黄历)、佛历、道历,支持节假日、星座、儒略日、干支、生肖、节气、节日、彭祖百忌、每日宜忌、吉神宜趋凶煞宜忌、吉神(喜神/福神/财神/阳贵神/阴贵神)方位、胎神方位、冲煞、纳音、星宿、八字、五行、十神、建除十二值星、青龙名堂等十二神、黄道日及吉凶等。lunar is a calendar library for Solar and Chinese Lunar.