If you are looking for an online emulator to let you try out the web interface of wireless router firmwares including OpenWRT LuCI, DD-WRT, Gargoyle and stock firmware for Netgear, TP-Link, Asus, Linksys and D-Link, they are actually available in the Internet.
This is particularly useful if you intend to flash your wireless router's stock firmware to an alternative, and you want to evaluate the functionality and looks-and-feels of such firmwares before finalizing your decision.
This is also useful if you intend to buy a new wireless router, and still indecisive among Netgear, TP-Link, Asus, Linksys or D-Link.
However, except for TP-Link, Asus, Linksys and D-Link, the online emulator website I found is in French. That should not be a big issue, as most of the firmwares are multilingual and allow you to switch its interface to English. In addition, if you are using Google Chrome to access the website, or you have installed Google Translate add-on to your web browser, Google Translate in your web browser will prompt you if you need a real-time translation to the website you are viewing.
Here are the URLs to the respective wireless router online emulators:
- OpenWRT LuCI web interface:
- Gargoyle Router Management Utility: