Despite its small footprint, it supports HTTP/1.1, secure SSL/TLS connections (HTTPS), automated provisioning and renewal of free certificates from Let's Encrypt® (ACME v2), IPv6, on-the-fly HTTP compression, dynamic content generation through CGI/FastCGI scripts, ISAPI extensions, native ASP.NET, HTTP/HTTPS/WebSocket reverse proxying, eXtended Side Includes (XSSI), custom error pages, password protection, IP address control, anti-leeching, bandwidth throttling, and log rotation.

Major features All the Features
Native support for 64-bit platforms
Virtual hosting (support for many hosts on a single computer)
Secure SSL/TLS connections (HTTPS), Dual hosts (HTTP+HTTPS), SNI support (Server Name Indication - allows virtual hosting of several HTTPS sites on a single IP address), and a comprehensible SSL/TLS certificates management interface
Automated request, installation, and renewal of free certificates from ACME-compliant certification authorities such as Let's Encrypt®.
On-the-fly HTTP compression
Native ASP.NET support
Support for PHP, Perl, Python, "Classic" ASP, and almost any Web scripting language including the ability to run database (MySQL/MariaDB, PostgreSQL, Oracle, MS SQL Server, etc...) backed Web applications
Reverse-proxying Web application engines such as Tomcat, Jetty, node.js, and ASP.NET Core (Kesterel)
Reverse-proxying WebSocket servers
Support for the Ruby on Rails framework
CGI, FastCGI, and ISAPI extensions support
Custom directory listings
URL Rewriting engine
Reverse proxy support with HTTP/1.1 compatibility and connection pooling
Multilingual remote web configuration interface (console)
Unicode and IDN (International Domain Names) support
Automatic anti-hacking system and an anti-leeching system to control cross-site linking
Server-wide, per file, and per directory bandwidth control
Log rotation and custom logging formats
X-Sendfile support and restricted/token-based downloads
IPv6 support
Windows System Service, MacOS X/macOS Startup Item, and Linux daemon support (Automatic startup when the computer boots up)

Only for V.I.P