ATS Comparison 2026: 8 systems that cover 85% of US postings
Side-by-side comparison of the 8 most-used applicant tracking systems in the US in 2026: market share, application time, parser strictness, candidate UX, auto-fill coverage. ~5,000 words with 10 cited sources.
What is the most-used ATS in the US in 2026?
Workday, powers approximately 32% of US tech and enterprise job postings. Greenhouse holds 18%, Lever 12%, iCIMS 10%, Ashby 5% (fastest-growing). Together these five cover ~77% of US enterprise postings (Ongig + Phenom ATS Market Share 2024).
Which ATS has the slowest application?
Workday, 22-35 minutes manually, 3-5× longer than Greenhouse or Lever. The slowness comes from structured work-history re-entry after résumé upload, 5-7 multi-page navigation, and 2-6 custom employer questions per posting.
Which ATS has the fastest application?
Indeed Quick Apply at 3-5 minutes (uses pre-filled Indeed profile), followed by Lever at 4-7 minutes. Among enterprise ATS, Lever is fastest because of its single-page form layout.
Is Workday or Greenhouse better for job seekers?
For candidates, Greenhouse, clean single-page application, lenient parser, faster submission (6-9 min vs Workday's 22-35 min). For employers, the choice tracks company size: Greenhouse dominates startups and mid-market (<2,000 employees); Workday dominates enterprise (>5,000).
Can one tool auto-fill all 8 major ATS?
Yes. Jobaholic auto-fills Greenhouse, Lever, Workday, Ashby, ADP MyJobs, LinkedIn Easy Apply, Indeed Quick Apply, and Rippling. Coverage of all 8 from one Chrome extension is unusual, LazyApply only covers LinkedIn+Indeed; Simplify primarily targets LinkedIn.
Eight applicant tracking systems together cover roughly 85% of US enterprise and tech job postings as of 2024: Workday (~32% share), Greenhouse (~18%), Lever (~12%), iCIMS (~10%), Ashby (~5%, fastest-growing), and ADP MyJobs (~5%) on the direct-employer side, plus LinkedIn Easy Apply and Indeed Quick Apply as job-board submission funnels.
Why this list matters to job seekers: a serious 6-8 week search will encounter Workday, Greenhouse, and Lever applications repeatedly, typically 60-80% of total application volume. iCIMS appears in healthcare, retail, and hospitality. Ashby is concentrated at high-growth startups. ADP MyJobs shows up at mid-market traditional industries.
The 5× spread between Lever (4-7 minutes manually) and Workday (22-35 minutes manually) is the single biggest variable in a job seeker's daily application math. Manual at 30 applications spread across these systems is 8-14 hours of pure form-filling per day. Auto-fill compresses every application to 60-90 seconds, making 30-50 applications per day sustainable.
You don't pick the ATS, the employer does. What matters to you as a candidate is: (1) total application time per ATS, (2) parser strictness (Workday is the strictest; multi-column résumés break), (3) screening question depth (LinkedIn Easy Apply is shallow; direct ATS apply is deeper). Optimize for the parser by using single-column PDF or .docx with standard section labels.
Get started with Jobaholic
Create a free Jobaholic account in 30 seconds, no credit card. The Chrome extension auto-fills job applications across Greenhouse, Lever, Workday, Ashby, ADP MyJobs, LinkedIn Easy Apply, Indeed, and Rippling. AI writes a tailored cover letter per job. Free trial includes 20 auto-applies per day for 3 days, then Pro at $25 per month or downgrade to Free.