Crop and edit images online, add filters and annotations
A super cute online Bongo Cat — play bongos, electric piano, marimba and more!
An online random maze generator that quickly creates varied maze patterns
A flexible expression calculator that evaluates input automatically, supports variables and JavaScript syntax
Tour the Forbidden City online from home
Tap the wooden fish anytime to accumulate merit
Tuner for guitar, bass, piano, guzheng and ukulele
Generate Alipay payment sound effects for any amount; download as notification or alarm ringtone
工具哇! 
