Databus
Databus is an async middleware platform. It can pull, queue, process and push data within the defined rules; and is managed over a simple Web interface.
It is open source and available at GitHub & PYPI
Used by
It is currently used by Eczacibasi Tuketim to accept various B2B documents over E-Mail and transfer them to SAP.
Databus is also the backbone of various products; such as Measy. You can inspect Measy as an implementation demo of Databus.
Contact
Databus is written & maintained by Dr. Kerem Koseoglu.