ProSys
- Property Tax Manager software which is an affordable alternative to other software for this purpose.
- http://www.prosysptm.com

Manatron Ascend
- Ascend property tax assessment management software and Apex property tax system for California counties.
- http://www.manatron.com/solutions/tax/ascend.aspx

ePropertyTax
- A property tax application service provider that allows individuals to file, research, pay, and appeal taxes through the Internet.
- http://www.epropertytax.info

County Software
- Offers Forms571, a California business property tax preparation software package. Forms571 prints state approved forms 571-L, 571-A and 571-F. Free demo download available.
- http://www.countysw.com

Visual PAMSPro
- Provides property management, and real estate property management, appraisal, and assessment software.
- http://www.visualpamspro.com/download.htm

Property Tax Management System
- Tax Compliance, Inc. offers a fully automated, personal and real property tax software system for use by corporate tax departments and/or property tax consultants.
- http://www.taxcomp.com/

Puerto Rico Taxes
- Bilingual tax preparation for Individual, Corporate and Property Tax Returns. Specifically for the Puerto Rico requirements.
- http://www.prsoft.com/

Visual Forms, Inc.
- Personal property tax preparation software for the State of Maryland and the District of Columbia
- http://www.visualforms.com/

Laser Software, Inc.
- Maryland Personal Property Return software and other Federal and State forms that can be printed on an Inkjet and Laserjet printer.
- http://www.lasersoftware.net