TokenTimer

TokenTimer (upstream tokentimerch/tokentimer-core, AGPL-3.0) is a self-hosted expiration management platform for teams: register API keys, TLS certificates, domains and subscriptions in one place, scan expirations automatically, and get notified by email / webhook ahead of time. Includes SSL & endpoint health monitoring, CertOps runbooks, workspace isolation and audit trails. LazyCat build adds: full Chinese UI (switchable zh/en), a built-in Chinese quick-start tutorial with screenshots, one-click default-account login on the sign-in page, and out-of-the-box SMTP alerts for providers like QQ Mail.