Here are some popular Bootstrap lightweight themes:
SoftLandandnbsp;is a free, modern, and lightweight landing page template created with the Bootstrap framework. It is perfect for creating beautiful websites for startups, apps, and other products.
Ninestarsandnbsp;is a free, lightweight, and responsive Bootstrap theme that is perfect for creative individuals and businesses to showcase their portfolios and services.
Hyperandnbsp;is a lightweight and modern Bootstrap admin template that is perfect for creating dashboards, web apps, and other administrative interfaces.
Siliconandnbsp;is a lightweight and responsive Bootstrap business template that is perfect for creating corporate websites, portfolios, and landing pages.
Aroundandnbsp;is a lightweight and multipurpose Bootstrap template that is perfect for creating a wide variety of websites, including blogs, portfolios, and e-commerce sites.
These themes are all lightweight and responsive, meaning they will load quickly on all devices and look good on all screen sizes. They are also easy to customize and extend, so you can create a website that perfectly matches your needs.
Here are some additional popular Bootstrap lightweight themes:
Volt Bootstrap 5 Admin Template
You can find these themes on popular marketplaces such as ThemeForest and CreativeMarket.