I maintain a list of ideas which are primarily the results of phrases like “I wonder why something like this doesn’t exist” or “This is way too complex, there should be a simple alternative to it” or “There should be an open source alternative to this tool”.

I work on them whenever time permits. Some of them are on my Github account. A few good ones are listed here.

Project	What exactly is it?
pypette	Ridiculously simple flow controller for building complex pipelines
gitsuggest	A tool to suggest github repositories based on the repositories you have shown interest in. http://www.gitsuggest.com
pyheatmagic	IPython magic command to profile and view your python code as a heat map.
pyheat	pprofile + matplotlib = Python program profiled as an awesome heatmap!
rake-nltk	Python implementation of the Rapid Automatic Keyword Extraction algorithm using NLTK.