Arm Keil MDK vs Zephyr SDK
| Arm Keil MDK | Zephyr SDK | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | $99/mo | Free |
| Open source | No | No |
| Platforms | api, extension, Linux, macOS, Web, Windows | Linux, macOS, Windows |
| Free plan | Yes | Yes |
| Debugger included | — | Yes |
| SDK components | — | compiler, assembler, linker, GDB, QEMU, OpenOCD, BOSSA, Xilinx QEMU, Picolibc |
| Target architectures | — | ARC, ARM, MicroBlaze, MIPS, OpenRISC 1000, RISC-V, RX, SPARC, x86, Xtensa |
| Host platforms | — | Linux, macOS (AArch64), Windows (x86-64) |
| Build systems | — | CMake, west, Ninja |
| Debug interfaces | — | QEMU GDB server, OpenOCD, GDB |
| License model | — | open-source |
Both are listed in Best Embedded Systems Toolchains. On The Geeks Club, Arm Keil MDK scores higher on our published basis.