We have a Pager that works, but no pager service is available. People have moved on to phones.
Amateur radio receivers

Features
- Incoming SMS
- Outgoing Landline
Electronic Engineering Technologies
FreeMat is a free environment for rapid engineering and scientific prototyping and data processing. It is similar to commercial systems such as MATLAB from Mathworks, and IDL from Research Systems, but is Open Source. FreeMat is available under the GPL license.
FreeMat – Engineering Technical Computing
FreeMat is chartered to go beyond MATLAB to include features such as a codeless interface to external C/C++/FORTRAN code, parallel/distributed algorithm development (via MPI), and advanced volume and 3D visualization capabilities.
Features Include