5.15.13 for Windows

Following database backend is distributed with this version:

1. SQLite (distributed with Qt): Built in the package using command -sql-sqlite.
2. ODBC: Built in the package using command -sql-odbc.
3. MariaDB Connector/C 3.1 series (Dynamic builds only): Built in the package using command -sql-mysql.

All builds have -no-openssl -schannel, which means that Windows Secure Channel is used for TLS Backend.
This backend is supported by Qt since Qt 5.13.

All builds have -no-icu because I think the ICU library is too big and, in most of the conditions, useless for common users.

Qt release Qt 5.15 series opensource version a year later than commerical version, yet still release QtWebEngine at same time commerical version released.
That is because QtWebEngine use a thirdparty project which features a license which don’t allow closed source.
Qt Commerical-Only LTS version has had its version up to 5.15.16 so this version is built with QtWebEngine 5.15.16.