Congressional Research Service is the searchable database of official reports written for the United States Congress, many of which focus on military technologies authorized and appropriated by the legislature.
International Institute for Strategic Studies has blog posts detailing research on military technologies conducted for the creation of IISS’s annual publication The Military Balance.
Janes is a well-regarded source of military technology news.
RAND contains articles and carefully researched reports on a variety of military technologies.
Wired offers high-quality journalism on cyber issues.