pttrns is described as 'Pttrns is the finest collection of design patterns, resources and inspiration' and is an website in the Development category. There are six alternatives to pttrns, not only websites but also apps for SaaS. The best alternative is Flomo Design, which is free. Other great sites and apps similar to pttrns are foxyapps (Free), Mobile UI Patterns (Free), Design Vault (Free) and Inspired UI (Free).
Foxyapps is a curated collection of best-designed real-world Android and iOS mobile apps. Whether you're looking for great design inspiration, learning the best UX and UI practices, or just like discovering new hot apps.