acWEB is an OpenSource replacement for MS IIS and other proprietary WEB servers for Windows. Unlike IIS, acWEB is not affected by viruses like CodeRed, Nimda, etc :).
Forth Script is a server-side web scripting engine based on FORTH language. It may work as CGI-application under any web-server and lets you create dynamic web-pages using Forth language, HTML patterns and database's data. Example: http://www.delosoft.com
Unlimited organizations, 3 enterprise SSO connections, role-based access control, and pro MFA included. Dev and prod tenants out of the box.
Auth0's B2B Essentials plan gives you everything you need to ship secure multi-tenant apps. Unlimited orgs, enterprise SSO, RBAC, audit log streaming, and higher auth and API limits included. Add on M2M tokens, enterprise MFA, or additional SSO connections as you scale.