kernelconfig.io is a search interface for Linux kernel module and configuration information. Its homepage accepts a module name or a kernel configuration name and pairs the search with selectors for kernel version and architecture. That pairing matters when investigating a configuration option because a useful result needs to match the source version and hardware target being considered.
The interface offers both stable and mainline version choices, a custom-version route and a range of architectures including x86, ARM, ARM64 and RISC-V. It also displays example CONFIG_ symbols as starting points for exploration. The site is a reference and discovery tool, not a program that modifies a machine's running kernel or generates a complete configuration automatically. It is useful when a developer or administrator needs to look up an unfamiliar symbol, connect a module to its configuration or compare the information available for a different kernel target.
