It's FOSS takes a look at 5 open source HTML and CSS editors for web developers and designers.

Dreamweaver Alternatives: 5 Open Source HTML and CSS Editors for Web Developers and Designers

You can use any code editor for HTML but using an open source HTML editor with dedicated features for web developers and designers can help a great deal.

Dreamweaver Alternatives: 5 Open Source HTML and CSS Editors for Web Developers and Designers