Does anyone know a free(trial) timestamp server service?

Would like to know if anybody knows any free(trial) time-stamp server service. I would like to test time stamping features in itext. Like I used Start Com class 1 as free CA for testing purposes. Hope I made it clear. Hoping someone knows a place Thanks

You can try one of these publicly accessible RFC 3161 compliant time-stamping services:

1. https://freetsa.org
   Supports HTTP, HTTPS and TCP transports and has other features
2. http://time.certum.pl
3. http://zeitstempel.dfn.de
4. http://tsa.tecxoft.com
   Requires registration & paid
5. http://timestamp.sectigo.com
   (formerly http://timestamp.comodoca.com/rfc3161)
6. http://sha256timestamp.ws.symantec.com/sha256/timestamp
7. https://ca.signfiles.com/tsa/get.aspx
   Still active, but the configuration panel for the CA is wide open. I'd recommend against using it, as anyone can remove your access anytime.
8. https://tsp.iaik.tugraz.at/tsp/TspRequest
   Uses a test certificate.
9. http://timestamp.digicert.com
   Documentation (along with the certificate used, that changes every so often) is there : https://knowledge.digicert.com/general-information/rfc3161-compliant-time-stamp-authority-server

Timestamping services that went offline :

1. http://dse200.ncipher.com/TSS/HttpTspServer
2. http://tsa.safecreative.org
3. https://timestamp.geotrust.com/tsa
4. http://timestamp.globalsign.com/scripts/timstamp.dll
5. http://services.globaltrustfinder.com/adss/tsa

You can also try one of these publicly accessible RFC 3161 compliant client applications:

1. TimeStampClient

Feel free to edit the answer and extend the list.