This tiny app written in Python uses Tweepy library and allows to retrieve in real time (via Twitter's streaming API) those tweets tagged with some predefined hashtags
In order to use the script, it's needed to install Tweepy in your Python environment (or in a virtualenv)
pip install tweepy
Also, you need to configurate the parameters consumer_key, consumer_secret, access_token, access_token_secret and those hashtags that will be monitorized. When running the script, redirect the script's output to a file (TXT for example) that will save the retrieved tweets:
python tweets-monitor.py > filename.txt
Note: In future versions, this crawler will use a database in order to keep the retrieved tweets. For the moment, keep patience :)