rapngasm 
Ruby interface for apngasm
Requirements
rapngasm requires libapngasm. Install instructions can be found in the "Installing" section here.
Building
rake compile
Specs!
rspec
License
libpng
Support
File a github issue
Expediated Support
PayPal to [email protected]
Copyright
Genshin Souzou Kabushiki Kaisha
apngasm is copyright Max Stepin & Genshin Souzou K.K.