Each platform has its own page with the employers that post the most jobs on it, the countries those jobs are in, and the request that returns them. Filter by platform in the API with source=greenhouse.
Counted from the published Headcount Labs catalog on 11 October 2026: 4,056,957 open jobs in all. A job is counted once per platform it appears in. The coverage page counts postings before duplicates are merged, so its figures are larger.
| Platform | Employers | Open jobs |
|---|---|---|
| Workday | 28,443 | 562,170 |
| SAP SuccessFactors | 1,189 | 273,347 |
| iCIMS | 5,049 | 232,615 |
| SmartRecruiters | 3,608 | 200,666 |
| UKG | 3,360 | 172,990 |
| Phenom | 1,366 | 170,850 |
| Oracle Recruiting Cloud | 2,930 | 157,694 |
| Greenhouse | 5,804 | 157,535 |
| ADP | 573 | 141,522 |
| Jibe | 488 | 139,181 |
| Paycom | 26 | 113,016 |
| Dayforce | 1,431 | 94,981 |
| DirectEmployers | 862 | 86,985 |
| Paylocity | 5,843 | 79,374 |
| Beisen | 590 | 77,251 |
| JazzHR | 3,527 | 76,913 |
| Radancy | 347 | 76,733 |
| Zoho Recruit | 2,092 | 64,752 |
| CareerPlug | 8,906 | 61,816 |
| Gupy | 2,155 | 60,457 |
| Ashby | 3,577 | 59,451 |
| softgarden | 3,269 | 57,509 |
| Oracle Taleo | 181 | 56,333 |
| BambooHR | 5,974 | 50,658 |
| Teamtailor | 3,869 | 49,385 |
| Paycor | 374 | 46,441 |
| Lever | 1,132 | 43,596 |
| Cornerstone | 257 | 43,169 |
| BrassRing | 2 | 37,202 |
| HRMOS | 1,932 | 36,197 |
| HRMDirect | 753 | 35,029 |
| Welcome to the Jungle | 1,989 | 31,724 |
| TalentReef | 311 | 31,312 |
| Recruitee | 849 | 30,621 |
| Recruiterflow | 420 | 27,516 |
| ClearCompany | 142 | 22,221 |
| USAJOBS | 198 | 18,632 |
| Breezy HR | 1,591 | 18,591 |
| ApplicantPro | 1,747 | 16,981 |
| Pinpoint | 127 | 16,559 |
| Workable | 624 | 15,621 |
| WeRecruit | 1 | 15,532 |
| Sólides | 1 | 15,360 |
| Taleo Business Edition | 68 | 14,033 |
| HERP | 928 | 12,149 |
| isolved | 1,319 | 11,380 |
| Hireology | 2,730 | 11,376 |
| Taleez | 415 | 10,568 |
| Keka | 666 | 10,186 |
| JOIN | 4,234 | 9,976 |
| Traffit | 223 | 9,885 |
| Eightfold AI | 30 | 9,488 |
| Hirebridge | 256 | 9,140 |
| Betterteam | 582 | 8,610 |
| Rippling | 1,102 | 8,279 |
| Bullhorn | 27 | 7,962 |
| Activate | 60 | 7,793 |
| Comeet | 476 | 7,749 |
| Personio | 490 | 7,397 |
| onlyfy | 473 | 7,263 |
| Jobvite | 120 | 7,262 |
| d.vinci | 1 | 7,150 |
| NEOGOV | 1 | 6,930 |
| Avature | 107 | 6,596 |
| Oleeo | 62 | 6,144 |
| Apploi | 718 | 5,611 |
| ApplicantStack | 392 | 5,608 |
| Dover | 1 | 5,452 |
| PageUp | 150 | 4,688 |
| Eploy | 78 | 4,620 |
| Varbi | 275 | 4,381 |
| Flatchr | 1 | 4,287 |
| Gem | 12 | 4,039 |
| ViziRecruiter | 141 | 3,944 |
| PandaPé | 255 | 3,837 |
| Talentsoft | 245 | 3,823 |
| HiBob | 230 | 3,667 |
| ReachMee | 316 | 3,472 |
| Jobylon | 234 | 3,331 |
| JobAdder | 268 | 3,313 |
| Trakstar Hire | 372 | 3,049 |
| EasyCruit | 397 | 2,609 |
| Paradox | 20 | 2,596 |
| OurCareerPages | 1 | 2,414 |
| MOKA | 15 | 2,394 |
| Umantis | 156 | 2,308 |
| rexx systems | 55 | 2,236 |
| Rival | 1 | 2,150 |
| ServiceNow | 1 | 1,997 |
| HR Manager | 110 | 1,708 |
| APS Career Portal | 157 | 1,706 |
| ApplicantPool | 4 | 1,641 |
| TriNet Hire | 190 | 1,558 |
| HiringThing | 3 | 1,435 |
| Recooty | 31 | 1,166 |
| Kula | 1 | 1,099 |
| Homerun | 271 | 1,015 |
| concludis | 1 | 1,012 |
| HireHive | 67 | 656 |
| Deel | 68 | 628 |
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