OpenZiti project is 100% open source and has SDKs for many languages - e.g., Go, Python, C, C#, Java, NodeJS, Javascript, Kotlin, Swift, etc. We also built zrok

OpenZiti project is 100% open source and has SDKs for many languages - e.g., Go, Python, C, C#, Java, NodeJS, Javascript, Kotlin, Swift, etc. We also built zrok which is a 'ziti-native' app to prvide ngrok type functionality. It is open source and can be self-hosted if you wish - https://zrok.io/ https://zrok.io/.