Arms Transfer and Military Spending Databases
Quantitative defence analysis depends on consistent, methodologically documented data. The sources ranked here publish their definitions, revision policy and coverage limits, which is what makes a figure citable rather than merely quotable.
12 ranked sources • scored against the authority methodology
Key findings
- —Transfer and expenditure series are revised, so publication date matters as much as the figure.
- —Definitions differ between publishers: constant versus current prices materially changes trends.
- —Event-level datasets disaggregate by actor, location and date, enabling causal work that aggregate series cannot support.
Ranked shortlist
- Visit
Benchmark Open Data on Arms Transfers & Sovereign Military Spending
Authoritative global research institute maintaining independent datasets on international arms deliveries, top 100 arms-producing companies, and global sovereign defense expenditures.
SEBenchmarkfreeAuthority 99/100 - Visit
Authoritative Global News on Military Procurement, Politics & Technologies
Flagship defense publication tracking military modernization, sovereign defense expenditures, weapon program decisions, and the annual Defense News Top 100 global contractor rankings.
USBenchmarkfreemiumAuthority 98/100 - Visit
Global Authority on Geopolitics, Military Balance & Strategic Conflict
Publisher of the benchmark annual "The Military Balance" inventory and host of the Shangri-La Dialogue. Evaluates global armed forces hardware inventories, defense budgets, and escalation risks.
GBBenchmarkfreemiumAuthority 98/100 - Visit
Global Defense Budgets, Military Balance & Equipment Market Forecasting
Foundational global defense intelligence house providing proprietary forecasting models on military spending, technical weapon systems specifications, geopolitical risk data, and sovereign procurement projections across 90+ armed forces.
GBBenchmarkpaidAuthority 98/100 - Visit
Official US Foreign Military Sales (FMS) Notifications & Congressional Approvals
US Department of Defense agency providing official announcements for all approved Foreign Military Sales packages, detailing contract values, prime contractors, and quantities of weapons delivered to allies.
USState AgencyofficialAuthority 97/100 - Visit
Conflict Event Data & Fatality Tracking
Authoritative open-source conflict dataset disaggregating political violence and protest events by date, actor, location, and fatality count across global theaters.
GLBenchmarkfreeAuthority 96/100 - Visit
Physical Field Investigation of Weapon Systems & Semiconductor Sanctions Evasion
Field investigation organisation documenting serial numbers and electronic component chains of recovered combat missiles, drones, and guided munitions in frontline conflict zones.
GBBenchmarkfreeAuthority 94/100 - Visit
Nuclear Weapons Policy & Defense Data
Scientific research organization maintaining authoritative open databases on nuclear weapons inventories, missile systems, and defense budget structure.
USBenchmarkfreeAuthority 94/100 - Visit
Specialist Arms & Munitions Identification Technical Consultancy
Technical intelligence consultancy providing expert identification of small arms, unguided artillery munitions, guided missile fragments, and illicit weapon distribution networks.
AUSpecialized DeskfreeAuthority 91/100 - Visit
Spanish Ministry of Defence Armaments & Materiel Procurement Directorate
Spanish state body responsible for managing major weapons procurement programs (Programas Especiales de Modernización), defense R&D, and sovereign equipment agreements.
ESState AgencyofficialAuthority 90/100 - Visit
Conflict Research & Arms Transfers
German conflict research institute producing databases on small arms transfers, military expenditure, and conflict transformation analysis.
DESpecialized DeskfreeAuthority 89/100
Conflict event data
Disaggregated event datasets that complement expenditure and transfer series.
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Daily Operational Battlefield Assessments & Campaign Analysis
Research organization producing widely-cited daily operational conflict updates, troop movement maps, and Russian and Middle Eastern military campaign evaluations.
USBenchmarkfreeAuthority 98/100 - Visit
Pioneering Open-Source Investigative Journalism & Geolocation Mapping
International collective of researchers utilizing satellite imagery, open-source metadata, and social media forensic verification to investigate military attacks and weapons proliferation.
NLBenchmarkfreeAuthority 95/100 - Visit
Frontline Territorial Control & Defensive Line Cartography
Digital military cartography service documenting territorial changes, fortification belts, artillery strike zones, and operational unit identifications along contested frontlines.
UASpecialized DeskfreeAuthority 93/100 - Visit
Crowdsourced Geolocation Mapping of Conflict Zones & Combat Strikes
Collaborative geolocation platform documenting real-time satellite imagery, frontline combat strikes, and defensive fortification lines with verifiable GPS coordinates.
GLSpecialized DeskfreeAuthority 91/100
Frequently asked
Why do military spending figures differ between sources?
Because definitions differ. Some include pensions and paramilitary forces, others exclude them; some report constant prices, others current. A figure without its definition is not comparable to another publisher figure.
What is an arms transfer measured in?
Reputable series use a transfer volume indicator based on unit production cost rather than contract value, which avoids distorting trends through discounts, offsets and inflation. Contract value and transfer volume are not interchangeable.