OSINT Source Typology

Print Media

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General daily newspapers
Industry newspapers
Industry journals
Professional journals
Company internal journals
Research papers
Dictionaries and reference literature
Non-fiction books in general
Annual reports from companies and other organizations
Government public documents
Employment Advertisements

Broadcast Media

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Television news
Documentary films
Other non-entertainment shows
Radio news
Radio documentaries
Other non-entertainment radio shows

Digital Media

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Online news papers
Online journals
Blogs and microblogs (e.g. Blogger, WordPress, Twitter)
Social communities (e.g. Facebook, LinkedIn, MySpace, Orkut)
Discussion forums
Newsgroups (Usenet Newsgroups)
IRC (Internet Relay Chat)
Wikis (e.g. Wikipedia, Wikisummaries, Wikileaks)
Sharing services for video (YouTube is dominating, but there are several others listed here and compared here)
Sharing services for photos (e.g. Panoramio, Flickr, and a number of others listed here)
NGO websites
Company websites
Governmental websites
Government public documents
Email newsletters
Employment advertisements
Published patents and patent applications
Domain registrar WHOIS records
Audio podcasts
Video podcasts
Maps
Satellite imagery
Aerial photos
Metadata extracted from published content (in practice from image files, office suite files and PDFs)

Databases and directories

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Public statistics databases
Newspaper articles databases (for material from before the Internet)
Business databases (for facts on companies)
Library & bookshop databases, and books.google.com
Documentary film productions databases (e.g. IMDb.com)
White pages phone books
Yellow pages phone books
People seach engines (e.g. Pipl.com)
All kinds of specialty search engines and directories, the content of which is often referred to as the “Deep Web”
Domain registrars WHOIS records