https://github.com/usechalk/chalk

Open-source identity, rostering, and SIS integration platform for K-12 schools. Self-hosted alternative to Clever and ClassLink — OneRoster compliant, SAML/OIDC identity provider, Google Workspace sync. Single Rust binary. No vendor lock-in.

edtech education google-workspace identity-provider k12 oidc oneroster open-source powerschool rust saml self-hosted sis

Last synced: 29 May 2026