LiveCycle forms not opening in other PDF applications

Hi,

I have created a form using LiveCycle Designer and sent to users to fill it out, The users who are using Adobe Reader and Adobe Acrobat Pro can fill the form but users who are not using Adobe Reader and Adobe Acrobat Pro (they are using other PDF applications such as Nitro, Nuance, etc.) unable to fill the form, Please advise that why LiveCycle forms not opening/supporting in other PDF applications, or is there way to sort it out this issue?  Note: I am using LiveCycle Designer ES4 version.