omaha-server is described as 'This is the Python 2 version of omaha-server. To obtain the Python 3 version with the latest security updates and support for the latest Omaha versions (including Omaha v3.1 / v4), please go to our web site' and is an app. There are 2 alternatives to omaha-server for Self-Hosted, Docker and Electron. The best omaha-server alternative is FaynoSync, which is both free and Open Source.
FaynoSync — self-hosted API server for managing application versions and distributing update information. It supports private applications with authenticated access, multiple S3 storage providers, and a flexible user management system.
A node web server which serves & manages releases of your Electron App, and is fully compatible with Squirrel Auto-updater (which is built into Electron).
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