Capitol Words [capitolwords.org] visualizes the most frequently used words in the Congressional Record, providing an at-a-glance view of which issues lawmakers on the House and Senate floor address on a daily, weekly, monthly and yearly basis.
Users can search by a specific word to see its usage frequency over time, including which lawmakers most mention that term. One can compare the usage of individual terms (e.g. health vs. education) or groups of terms (e.g. health + education vs. war + terror). One can also check who are the most vocal, or quietest, members of Congress (i.e. those who have the most or least words attributed to them in the Congressional Record, including via extended remarks).