What's qDecoder? Being a Web Application Interface for C/C++ use, qDecoder is a solution product for developers. The Query Fetch algorithm of qDecoder based on the linked-list provides transparency with low layers by the simple library interface regardless of COOKIE/GET/POST(including File Upload). Thus, it enables the web based software to be more intuitively designed and implemented. qDecoder is developed according to the free software model and is publicly distributed.