Major ATS Software Platforms
Definition: The dominant Applicant Tracking Systems in 2026 include Workday (22% market share, Fortune 500), Greenhouse (tech startups), Lever (fast-growth companies), iCIMS (mid-market), Taleo/Oracle (legacy enterprise), and BambooHR (SMB).
The Big 6 ATS Platforms
Workday
Used by: Amazon, Walmart, Netflix, Target
Parsing behavior: Strict keyword proximity scoring, penalizes header/footer text
Strength: Enterprise-grade with deep HRIS integration
Greenhouse
Used by: Airbnb, Pinterest, Figma, Peloton
Parsing behavior: Excellent PDF parsing, forgiving of creative section names
Strength: Collaborative hiring workflows for fast-moving tech teams
Lever
Used by: Netflix, Spotify, Coursera
Parsing behavior: Good semantic search, focuses on candidate sourcing
Strength: Built for proactive recruiting, not just application management
iCIMS
Used by: Mid-market companies, healthcare systems
Parsing behavior: Standard keyword matching, reliable but not advanced
Strength: Compliance and audit trail features
Taleo (Oracle)
Used by: Legacy Fortune 500, government contractors
Parsing behavior: Poor PDF support, prefers .docx, rigid parsing
Strength: Deep compliance features for regulated industries
BambooHR
Used by: Small to mid-size businesses
Parsing behavior: Basic keyword matching
Strength: Affordable, simple interface
Which ATS system is most common?
Workday leads with 22% market share among Fortune 500 companies. Greenhouse dominates tech startups. iCIMS is most common in mid-market. Taleo/Oracle is prevalent in legacy enterprise and government. Most companies use one of these five platforms.
Does it matter which ATS a company uses?
Yes, for formatting. Workday handles complex PDFs well; Taleo struggles with them. Greenhouse is forgiving of creative section names; Workday requires standard headers. When in doubt, use single-column .docx with standard sections — this works across all platforms.
How do I know which ATS a company uses?
Check the job application URL: greenhouse.io, lever.co, myworkdayjobs.com, icims.com, or taleo.net in the URL reveals the platform. You can also Google "[company name] ATS system" to find public information.