Reliafy is an open-source reliability engineering platform, available self-hosted under AGPL-3.0 or as the hosted Reliafy Cloud. It covers life-data (Weibull) modelling, reliability block diagrams, maintenance strategy optimisation, degradation and remaining useful life, evidence-linked RCM and fleet failure forecasting. The cloud version adds accounts, team workspaces, sharing and an AI assistant. It is built on the open-source SurPyval and RePyability libraries.