On the website, you can enter up to 6 different URLs, 1 for a landing page, the other 5 for the tabs that you want to open together at the same time. After that, click on the "Generate Link" button, then you will get a Hiperurl link below (such as this).
For the Hiperurl link, you can share it on Facebook, Tuenti, Twitter from the website directly, and anyone who clicks it will see the landing page, as well as a pop-up window that shows the URLs contained, as what you can see from the above image. Clicking on the "Open Tabs As" button, you can open the webpages of those URLs in new tabs at the same time.
Hiperurl is available for you to enter up to 6 different URLs, but during my test, if you don’t enter the URL for a landing page, there will be errors when opening the webpage of the Hiperurl link (such as this) on Firefox and Opera browsers.
On Firefox, there will be a pop-up window that alerts you the URL is not valid and cannot be loaded, until you click the OK button, such as what you can see from the following screenshot:
On Opera, there will be an "Internal communication error", and you can’t visit the webpage of the Hiperurl link at all, as what you can see from the following screenshot:
But there won’t be such errors on Safari and Chrome browsers.
Comparing to URLOpener and BridgeURL, Hiperurl is only available for you to open up to 5 tabs at a same time, while URLOpener and BridgeURL are available for you to open as many tabs as you like, but URLOpener doesn’t offer a link for you to share, and BridgeURL will open all the URLs you enter as slideshows in only one new tab.