Try Lacuna Web PKI.
With Lacuna Rest PKI you can digitally sign documents in compliance to the XAdES Standard through an easy REST interface. Try it now with one of our samples.
Lacuna Web PKI will be perfect for you.
We provide tools for product development and support of digital certification services across key management and performing cryptographic operations such as encryption and digital signature in commercial and business applications created by the customer, including:
Public Key Infrastructures (PKIs)
Identity Management Systems