XolidoSign is a free application to electronic signature and/or timestamp to all the documents you need (embedded PDF signature, images, etc..), you only need a digital certificate. New version includes free TimeStamp of several recognized authorities, with multiple server support. The electronic signature program includes smart verificationt, select everything you want to check and the system performs an automatic pairing and associations between files, electronic signatures and timestamps, providing the state of valid signatures, stamps and files. Download XolidoSign.