Dribble is a popular community of designers for them to showcase their work online. In addition to posting screenshots of their work, designers also upload the HTML / CSS version of their projects for anyone to use. You should bookmark the freebie and the freebies tag on Dribble to never miss these projects.
Creative Market is a marketplace for website templates, themes, fonts and other design assets. It is a paid store but if you join their email newsletter, they’ll send you free design stuff every week in your inbox that can be Downloaded directly to your Dropbox. And they are mostly good.
HTML5 UP is created by the same developer that built Carrd, one of the most useful websites on the Internet. HTML5 UP is a treasure house of beautiful templates built sans the heavy Bootstrap or Material framework. All web templates are available in the Creative Commons license so can you can use them in any way with attribution.
Envato’s Themes Forest is a premium marketplace for website templates but if create a free account with them, you get to Download all the freebies that are published on their homepage every few weeks. These are paid items that the authors have made free only during the duration of the promotion to gain visibility in the marketplace.
OnePageLove is a curated directory of single page websites and they have a dedicated section for HTML templates that are free to Download.
UpLabs is another online marketplace and community where creative designers share their work. The “web” section offers a variety of HTML templates that are free for both personal and commercial use.
Manoela Ilic’s Codrops houses the most creative collection of work for web designers as well as developers. Every single project on this site, be it an image slider or a checkout page, is unlike anything you’ve seen before and the source code is up for grabs on Github.
Freebiesbug, as the name suggests, curates web freebies including fonts, PSD designs, stock photos and, of course, HTML templates. Look for the “exclusive” tag and you’ll discover HTML/CSS templates that the designers have chosen to share exclusively on this website.