Xcelerator is the latest addition to the rich “PLM flora” from Siemens Digital Industries, which is the company’s now merged PLM and automation division. Xcelerator is an integrated portfolio of software, services and a platform for application development. The core of this set-up is the Mendix software, which Siemens bought last year. Read more here: 

https://www.engineering.com/PLMERP/ArticleID/19548/Is-Siemens-New-Low-Code-Platform-Mendix-an-Aras-PLM-Killer.aspx