The Mountain View, Calif.-based company will discontinue the service on Dec. 30, the company said in a message posted on Blox.com.
"All Blox.com services and content that are embedded in Web sites will no longer be available, and will not work, after this date," the message read. "Our SpreadsheetBlox solution may be licensed and installed on your site. However, we will no longer offer any of our technology on a subscription basis."
Representatives from Alphablox and Blox.com did not return calls on Friday seeking comment. The posted message did not say why the service was ending, although the company said it would continue to market its products.
Blox.com members could access programs to calculate car payments, how much they would have to save for college or to plan trips and embed them in outside Web sites.