Pidoco is described as 'Quickly create, share and simulate professional wireframes, mock-ups and UI prototypes online without programming' and is an app in the Development category. There are more than 25 alternatives to Pidoco for a variety of platforms, including Windows, Online / Web-based, Mac, Linux and iPhone. The best alternative is Pencil Project, which is both free and Open Source. Other great apps like Pidoco are Lucidchart (Freemium), Balsamiq Wireframes (Paid), Marvel (Freemium) and Moqups (Freemium).
Lucidchart is a visual workspace that combines diagramming, collaboration, and data visualization to accelerate understanding and drive innovation. With this intuitive, cloud-based solution, everyone can work visually and collaborate in real time.
Mockup Designer, built with Backbone, Backbone-LocalStorage and Html2Canvas, is a super-easy-to-use mockup tool that uses the local storage of your browser as its backend. However the data layer is loosely coupled, so you can integrate with any RESTful API or any Backend service.
Online tool for creating mockups in the browser. Use your browser’s save function to save the file (just html for view only, complete save for an editable version) or export to codepen for others to view.