WS2812 FX Library for Arduino and ESP8266
Why do you think that https://github.com/dmadison/FastLED_NeoPixel is a good alternative to WS2812FX
WS2812 FX Library for Arduino and ESP8266
Why do you think that https://github.com/dmadison/FastLED_NeoPixel is a good alternative to WS2812FX