Shards UI Kit is a free, modern and lightweight UI toolkit based on Bootstrap 4 that comes packed with 2 extra pre-built landing pages and 11 custom components that you can use to kick-off your next project.
the licence is unclear
1. LICENSE SUMMARY
1.1. - Unlimited commercial client work usage. - YES
1.2. - Unlimited personal work usage. - YES
1.3. - Educational and training purposes. - YES
1.4. - Creation of "Software as a Service" (SaaS) application(s).
(eg. generators, etc) - NO
1.5. - Creation of product(s) aimed for specific platform(s).
(eg. WordPress Themes, etc) - NO
1.6. - Distribution - NO
1.7. - Sub-licensing - NO
1.8. - Re-selling - NO
so if i want to use it as a base for a CMS theme for my or other websites
or i want to use it as a base for SAAS.Ane Disi has used this product for one day.