Different author credited but the same owner the whole time. So might be different. The library that async is based on is the same owner as well. Edit - the

Different author credited but the same owner the whole time. So might be different. The library that async is based on is the same owner as well. Edit - the owner in 2013 is the same as the owner of the current gem and main contributor on Github. So yes it seems like it's been around since 2013.