Partially related: I have two older WRAP boards by the same manufacturer which served me well in the past but today are too old and slow to be used for packet f

Partially related: I have two older WRAP boards by the same manufacturer which served me well in the past but today are too old and slow to be used for packet filtering (AMD Geode x86 CPU, 128MB RAM). I think they could be of use in other contexts, once provided with a more suitable OS; what would you recommend to keep them in use in embedded related applications where security is not a concern, that is, reading from sensors in local networks, hosting very simple services, etc? They're well built and still low power (5 Watts or less) and would deserve some more years of life.