Merge, Kombo and Finch are unified API products built mainly for software companies that need to read employee data from common HR and payroll systems through one normalized schema.
datascalehr is built for multinational payroll integration. datascalehr moves data in both directions, keeps every country-specific field at full fidelity, keeps the audit trail for retro records and year-to-date totals, and connects to local providers in 180 countries, including providers with no API.