Apache NuttX vs Sailfish OS
| Apache NuttX | Sailfish OS | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | — | — |
| Free plan | Yes | No |
| Device types | Development boards and embedded devices; simulator targets are also documented | Smartphones; tablets; embedded devices |
| CPU architectures | ARM, ARM64, AVR, AVR32, 8051, CEVA, ESP32 Xtensa, Intel x86/x86_64, MIPS, m68k, RISC-V, SPARC, SuperH, TriCore, Xtensa, Z80 | ARMv7 (armv7hl); ARM64 (aarch64); x86 (i486) SDK targets |
| Built-in management | Configurable build system; native board/architecture configuration; driver and power-management subsystems | Mobile device management APIs; remote device provisioning; configurable policies; remote OS updates and app management; remote locking and data wipe |
| App compatibility | POSIX/ANSI-oriented APIs; binary loader supports ELF and NXFLAT modules and built-in applications | Native Qt applications; optional Android AppSupport; Android app stores and APK installation |
| Deployment models | Physical embedded boards/devices and simulator targets | Installed on supported physical phones; adaptable to embedded devices |
Both are listed in Best Operating Systems. On Inferse, Apache NuttX scores higher on our published basis.