Scikit-learn - scikit-learn (formerly scikits.learn) is an open source machine learning library for the Python programming language.
Workflowy - A better way to organize your mind.
Pandas - Pandas is an open source library providing high-performance, easy-to-use data structures and data analysis tools for the Python.
SuperNotecard - Introducing SuperNotecard. SuperNotecard is an online writing tool that features virtual notecards to help arrange facts or scenes, track details, organize paragraphs, and clarify your composition process.
NumPy - NumPy is the fundamental package for scientific computing with Python
Dynalist - Dynalist is a web app that lets you break down and organize your thoughts in the format of lists.