Zeplin - Collaboration app for UI designers & frontend developers
React Proto - React application design and prototyping tool
avocode - Centralize design collaboration, version control, prototyping, feedback, and developer hand-off with Avocode. Work on any design, anywhere, with anyone. Sign up free 👉 https://avocode.com/.
UI Bakery - An intuitive visual internal tool builder. Allows you to create admin panels, CRMs, customer support tools on top of your database. Integration with MySQL, PostgreSQL, MongoDB, and more. Add business logic, manage user permissions, share your app.
Mockplus iDoc - Handoff designs with accurate specs, assets, code snippets
Invision - Prototyping and collaboration for design teams