Open source software (opencheom.net) can read a multitude of file formats including GC-MS data. Can also read CSV files so could easily be connected to an arduino running processing or a firmata shield
Monitoring the lake turnover during the winter, I submerged three thermistors from Adafruit in the lake. The thermistors are connected via ethernet cable to the shed and then eventually to an Adafruit datalogger
The datalogger is next to a commercial HOBO datalogger for comparison