Adult-HTML is a Lithuania-based web design and development studio that has built sites for adult operators since 2009, running a 25+ person in-house team out of Vilnius. The service covers the full build pipeline - UI and graphic design, responsive HTML/CSS/JS markup, Vue and React frontends, and PHP/Laravel backend work - rather than selling off-the-shelf templates. Its most useful trait for operators is direct integration experience with the scripts the niche actually runs on: KVS, MechBunny, Elevated X, and WordPress.

Engagements are flexible, offered as fixed-price projects, hourly work, or a dedicated developer or team on monthly retainer, with a published 30+ project portfolio. As a bespoke studio there are no fixed package prices, so scope and timelines need a direct quote, and custom builds cost more than buying a ready theme.