comedirecord is an oscilloscope program to record data from a COMEDI-compatible device. Its philosophy is to save the data in its original unfiltered form but allow comfortable viewing of the data during an experiment. One can acquire data from multiple DAQ boards simultaneously, and also append data via an incoming TCP port, which could be a telnet connection into comedirecord or data from another program. An IIR notch filter has been implemented to filter out unwanted mains noise (50 or 60Hz), which is useful especially for medical applications (EEG, ECG, EMG, etc). A DC filter can be switched on, which is useful when observing small voltage changes at a high gain (for example, measuring small temperature changes). The output format is ASCII and HDF5, so the data can be imported into GNUPLOT, scilab, or octave.
SpeechControl provides speech recognition for Linux. It allows you to train and build archives of your voice so it can understand you with precision, can install standard models and adapt the model to reduce the amount of work you'd have to do and have a wider range of accuracy, and can share your training information with the online repository VoxForge.
Shelk-test is a program for creating tests for students. Tests take up just three modules: creation, testing, and reporting. Shelk-test can insert images into all types of questions, making it possible to create a question such as "What is shown in the picture?" All tests are stored centrally in a SQLite database, increasing reliability and allowing you to have a database file without having to install a database server.