Cloud APIs & SDKs for clearing content on Microsoft Excel & OpenOffice Calc. Clear content on local spreadsheets by the Cells Cloud API. SDK support kinds of development languages. They include Android, C#, Go, Java, NodeJS, Perl, PHP, Python, Ruby, and swift....Cloud APIs & SDKs for clearing content on Microsoft Excel & OpenOffice Calc. Clear content on local spreadsheets by the Cells Cloud API. SDK support kinds of development languages. They include Android, C#, Go, Java, NodeJS, Perl, PHP, Python, Ruby, and swift.