Payroll software and online payroll providers (U.S.)

Adaptasoft

Features: tax impounding, client billing options, third party payment options, direct deposit, integrated HR & timekeeping …

Adp

ADP is online payroll services provider.

Intuit Payroll Software

Provides payroll software and services.

Paychex

Provider of payroll and HR services and 401(k) plans.

Paysoft

Provides payroll software for accountants.

SurePayroll

Provides online payroll services.