GovTrack.us - GovTrack.us enables users to track the bills and members of the United States Congress.

Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.

Vote Smart - Vote Smart, formerly called Project Vote Smart, is a non-profit, non-partisan research organization...

Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.

ISideWith - See which American political parties, candidates, and ballot initiatives match your beliefs based on the 2019 issues that are most important to you.

Qiqqa - Qiqqa is a free research and reference management software. It can be used in many organizational projects from the academic to the personal to the business endeavor. Read more about Qiqqa.