These wireframe tools have a “free forever” option so there is no need to add your credit card details, even in the future. As with most free systems, the trade-off is that you’ll likely get a limited version of a paid system, so here is an outline where you might run into roadblocks.
Lucidchart is a full-featured, free wireframe builder and UI design tool. It offers easy multiple people to edit the same wireframe simultaneously with its collaboration feature. You can add Lucidchart as a Chrome add-on that makes it easy to add a Lucidchart diagram to Google Docs or Sheets.
InVision’s cloud-based solution helps design and wireframe mobile apps and desktop sites, as well as to create architecture documentation and visualize navigation flows. Its built-in collaboration tools allow you to receive feedback from your teammates, and its interactive prototypes let testers navigate your app or webpage in a realistic manner.
Moqups is a cloud-based design option that comes equipped with a full library of stencils and icon sets. It offers the ability to import your own images to match your site. Its drag-and-drop editor allows designing wireframes of sites, flowcharts, and storyboards intuitively.
Wireframe.cc is a great option for a simple, uncluttered user interface. Instead of toolbars, Wireframe.cc use pop up options which makes it look cooler. You can share live wireframes with the team for collaborative editing.
MockFlow offers an entire design library of templates to help you create website and app interface blueprints, sitemaps, and more. You can also choose from third-party templates, layouts, and components. You can display a wide variety of elements in your mockups and wireframes through MockFlow
6. Fluid UI
Fluid UI is a cloud-based wireframing solution. It offers designers a library of over 2000 elements. You can create interactive prototypes and create page animations to get a better idea of how your final product will look and feel. You can use Fluid UI’s Android and iOS apps to preview your prototypes on mobile.
Pencil is the only desktop-based wireframe tool on this list, and it’s open source, which means that every feature is available to all users for free. The system allows you to create multipage wireframes with links between pages. When you export your wireframes to an HTML webpage, Pencil preserves the links, so you can share the full app or website mockups with linking pages. You can take advantage of the system’s Android and iOS stencils to design for mobile.