TinyELCA is an Embedded Local Certificate Authority.

TinyES3 is an Embedded Secure Signing Server.

TinyONE is a small embedded DHCP and SNTP server.

Build your own Certificate Authority with OpenSSL.

TinyCTS/AL is a combination of TinyCTS and an abstration layer.

A Proof of Concept with an i.MX RT1160 / RT1170 and lwIP

An Operation System Abstration Layer (OSAL) for TinyCTS, µC/OS-III and FreeRTOS.

µC/OS-III and an Operation System Abstration Layer.

These are some of my tools where I think that they are useful for embedded development.