You can check out Subscription Manager for Joomla! Alternative here. This website gets rebuilt every 12 hours.

Frontend User Info

user1 is a registered user, has never subscribed. user2 is a valid subscribed user. user3 was a subscribed user but the membership has been expired.

ID: user1
Password: user1

ID: user2
Password: user2

ID: user3
Password: user3 

Backend User Info

ID: admin
Password: admin

Login Backend

PayPal Sandbox Info

You can see how the payment is done in this demo site. Before the testing you need to login PayPal Sandbox with the following info.

Email: sandbox@submanageralt.demo.forjoomla.net
Password: smfjademo

When you see the PayPal page after submitting the subscription form in "Subscribe" page, use the following info to proceed the payment. It is recommended that you keep opening this page to get the user info below easily.

Email: buyer_1275724363_per@submanageralt.demo.forjoomla.net
Password: smfjademo