Widgets have been written in Python, PHP, JScript, JScript.NET, VBScript, VB.NET, Ruby and Perl.
Kapsules was inspired by Arlo Rose and Perry Clarke's Konfabulator (which has recently been purchased by Yahoo!
By using a managed framework, Kapsules lets designers choose from one of several scripting languages, while Konfabulator widgets are written exclusively in JavaScript.
Also, Kapsules can be installed on a Windows guest account, whereas Konfabulator requires Administrator privileges.
On or around November 9, 2006, the Kapsules website was updated with a single page stating that the site had been hacked.