Requires.io helps you keep track of the requirements of your Python projects. To do so it simply fetches the dependencies from the req*.txt and setup.py files in the root folder of your project, and compare them against the latest releases available on PyPI.
Dependencies can be marked at three levels:
A handful of projects already using requires.io:
Requires.io is a very new service, still in a beta (or shall we say alpha?) phase. The notification part is still being worked on: broadcasting zillion of emails doesn't sound very appealing to us, so we are working on something a little bit different!