pdfformfiller 1.0-alpha is a command line utility for filling in Adobe PDF Forms.
For WWW: A php example, that uses fast Unix pipes (and no disk write permissions required on the host), is provided.
It support UTF-8 (Russian, etc.).
Proper escaping functions are provided in the php example.
Well known pdftk utility can be used for filling in PDF Forms.
However, I was not able to get the version pdftk1.4 to work with UTF-8.
It's XFDF format support UTF-8 encoding, and assumes...