dhtmlxSlider provides options to set min and max values, step value, and default value. In addition to setting value by clicking on the slider or dragging the slider's handle, the value can also be set by entering it into the input field.
dhtmlxSlider is available in Standard Edition only - Download
You can use dhtmlxSlider for free under GNU General Public License v2, or Free License that allows you to use the component in a non-GPL application/website.
Open Source - GPL v2 - Allows you to use dhtmlxSlider in open source, GPL-ed projects for free.
Free License - Allows you to use dhtmlxSlider in non-GPL, proprietary projects (applications) at no charge.
dhtmlxSlider Standard Edition is distributed under GNU GPL v2 and Free license (details)