I have been using SMS Server Tools 3 (smsd) for numerous projects in the past due to its stability and configurability. Since smsd does not provide a graphical UI out-of-the-box I have decided to develop a web interface for users to be able to manage their SMS data, much like an e-mail application, called SMS Server Tools Web Interface. Currently, there is no release available yet. Nevertheless, if you are interested in this project either check back at a later time or subscribe to the github project. Also, please note that at this point I cannot estimate when an initial version will be released.