https://outcron.com - hosted tool to schedule health checks, webhook calls, & container executions
As an SRE, DevOps Engineer, and Platform Engineer, I've always wanted an external place to run scheduled executions of miscellaneous utilities -- checking in on a URL, running an SSL check, verification of DNS from outside, etc. REST API-centric with CLI tool and web UI control near-parity.
Backend and CLI are Golang. Frontend is React. Simple architecture--a bunch of aarch64+amd64 hosts run `outcrond` and use a shared PostgreSQL and Valkey/Redis.