Professional SMS Gateway for use with a UMTS / 3G / EDGE /GPRS modem. Market leader. 6 years on the market. Advanced API: TEXT, FTP, ODBC, SQL, XLS, MDB, HTTP-REQUEST, CSV.
This software is not reviewed yet.
Short Messaging Planner - a personal organizer / database system and an SMS Gateway. SMP lets you create and print work schedules. It send automatic SMS and Email reminders about upcoming appointments. It works with most UMTS modems.