Online amortization schedule calculators are some of the best online available. They are web-based, so they do not need additional software or applications. Amortization schedules can be calculated immediately online on one of their web pages.
Ewmortgage.com is a mortgage advisor website that features a Java-based interactive amortization table (http://www.ewmortgage.com/mortgage/), and other mortgage-related applications such as APR/front end calculator, 5/25 and 7/23 balloon convertible mortgage calculator, car leasing payment calculator, monthly payment table generator, income qualification calculator, nominal and effective interest rate calculator, etc.
Calculators4mortgages.com also has a Java-based Amortization Schedule (http://www.calculators4mortgages.com/Calculators/Amortization-Schedule/amortization_schedule.html) that calculates the monthly payment of a specific loan and breaks down the amount of principal and interest paid over the term of the loan.
Century21.com, a real estate website, lets you calculate amortization schedules and save, and email the result or amortization table. However, you need to register to use the save and email features. Registration also allows you to store your search criteria, file agent information and build a custom library. Entry method is standard such as loan amount, interest rate, loan term and monthly payment.