If you want try the QuantPrime service without registering, we've set up a test account:

Login: test
Password: test

However, the computing resources available for this account are very limited; i.e. only one primer pair can be designed at one time, no matter how many people are logged in with the account at the same time. Data (projects, gene lists, primer pairs) are removed regularly. Larger running primer finding jobs might be cancelled to free up computing resources when the server is under high load.