logoutacross

Logoutacross is an open‑source authentication tool designed to provide a unified single‑sign‑out experience across multiple web applications and services that share a common user identity infrastructure. The project is written in Python and is distributed under the MIT license, making it freely available for both commercial and personal use. Its primary goal is to reduce the cognitive load on users who otherwise have to log out of each application individually while ensuring that active sessions are terminated securely.

At its core, logoutacross implements a callback‑based revocation framework. When a user initiates the logout process on one application, the tool sends a signed termination request to every registered partner service. Each partner service receives the request, verifies the signature, and then terminates the associated session. The system is agnostic to the underlying authentication protocol; it supports OAuth 2.0, OpenID Connect, and SAML 2.0 through pluggable adapters. This flexibility allows it to be integrated into a wide range of modern cloud‑first applications, micro‑service architectures, and legacy legacy systems that expose a logout endpoint.

The library ships with a set of command‑line utilities for developers to test and monitor logout flows. Documentation is hosted on Read the Docs and includes detailed deployment guides for Docker, Kubernetes, and traditional virtual machines. The community around logoutacross is active on GitHub and Slack, where contributors discuss feature requests and bug fixes. Several large enterprises use the tool to streamline user management across their internal platforms, and academic research has cited it in papers on distributed authentication. Because it centralises the logout process, the tool has been shown to reduce the average time to end a user session by 70 % compared to manual logout workflows.