Start with the role. Use the right tool for the next sourcing decision.
SourcingOS free tools cover the parts of search strategy that recruiters repeatedly rebuild by hand: role interpretation, Boolean, X-Ray, lane expansion, query QA, source coverage, and search-exhaustion evidence.
Flagship free tool · No account requiredBooleanOS — turn a hiring requirement into a complete sourcing strategy.
Natural language or JD in. Recruiter-controlled requirements, search breadth, alternative approaches, and platform-specific Boolean for LinkedIn, Google X-Ray, GitHub, ATS / resume databases, and more out.
Try BooleanOS free →Where are you in the search?
JD Strategy Tool
Turn a messy job description into evidence requirements, target titles, source lanes, Boolean ideas, and hiring-manager calibration questions.
You know the roleBooleanOS
Generate and refine recruiter-ready searches across platform dialects without losing the distinction between requirements and discovery expansion.
You already have a queryBoolean Doctor
Audit Boolean/X-Ray syntax, platform compatibility, over-constraint, requirement coverage, geography handling, and public-web safety before you search.
BooleanOS
Describe the hire once. Review what BooleanOS understood, choose breadth and search approach, then compile the right query for each search surface.
Search QA · NewBoolean Doctor
Paste any recruiter Boolean or X-Ray search and see what is broken, redundant, over-constrained, unsupported, missing, or better handled by a native platform filter.
Open-web searchX-Ray Launcher
Launch focused Google X-Ray searches across LinkedIn, GitHub, public resumes, Stack Overflow, Hugging Face, and other open evidence surfaces.
Role intelligenceJD Strategy Tool
Turn a messy JD into evidence requirements, source lanes, Boolean ideas, target titles, and calibration questions.
Mid-search expansionSearch Lane Expander
Turn a rough role target into Precision, Balanced, Broad, and Market Map lanes with live sources, manual-safe X-Ray links, and low-result rescue actions.
Stack strategySource Stack Coverage Worksheet
Unbundle your sourcing stack into the jobs it actually performs and expose coverage gaps before renewal, cancellation, or another tool purchase.
Source analyticsUCR Calculator
Measure the share of a source's evidence-fit leads that no other tested source surfaced, plus optional cost per unique lead.
Coverage evidenceSearch Exhaustion Evidence Calculator
Calculate lane coverage, duplicate rate, unique-query yield, donor-map coverage, adjacent-title yield, and recent new-lead rate before declaring a market exhausted.
Cleared / GovConClearance Search Builder
Clearance-aware Boolean and X-Ray strategy with verification-sensitive handling for public-web evidence.
Req triageAging Req Rescue Planner
Diagnose whether a req is stuck because of calibration, market coverage, compensation, outreach, or search-lane exhaustion.
Continue in SourcingOSCandidate Search
Move from search strategy into source-aware discovery, evidence review, and Candidate 360.