Mockplus has very comprehensive ways of previewing a prototype. There are basic functions of exporting into picture in two formats. Mockplus also has two ways for preview on cellphone app: scanning QR code and entering view code after uploading project to cloud. QR code scanning for preview is really rare in this kind of software. You don’t need to connect to the computer, or upload the project to cloud, just open your app and scan the code. Exporting into demo package is also a rare but useful function which Mockplus has. Reportedly, Mockplus: 2.2 beta version will have the function exporting into HTML, and the launch of 2.2 version should come soon. The HTML exporting of Mockplus has two ways: first one is to export offline package. You could send this package to your colleagues directly or put it on the local sever for downloading and preview. The second way is online HTML previews. After publishing the HTML online, you could send a link to people who want to have a preview of your prototype.
You can quickly build interactive prototypes using the drag and drop. A set of pre-designed components, including pop-up panel, stack panel, scroll box, sliding drawer and image carousel, helps you create the prototype faster.
Mockplus has a very intuitive interface that lets you quickly build your prototypes with no programming needed. You are able to create interactive components with the drag and drop feature.
Sketch is hugely popular among designers so there are a lot of well maintained community resources for everything from iPhone frames to iOS/Android UI elements & icons.
Reactive panels keep the UI for Sketch clean from the sort of clutter the panel system in Photoshop suffers from. The panels in Sketch change based on the object in question, saving you from having to have a multiple separate panels.
You can rescale assets without quality loss, easily export x2 assets for retina designs and design high quality icons & artwork. Being pixel aware lets you set a grid and snap objects to it as well as round to the nearest pixel edge to clean up your layers.
You can set the square grid to whatever dimensions you like as well as set thicker lines every x blocks. You can also configure the color of the lines to make them as obvious or subtle as you wish and toggle the grid with a keyboard shortcut (crtl+g).
Holding down alt will show the smart guides that show the distances between any layer you hover over to nearby layers or the edges of the artboard. Very useful for checking your spacing or aligning layers.
Sketch lets you re-use the same design in multiple places, with changes synced throughout the various places it is used. You can also create text styles to sync typography changes.
Mirror lets you connect your iPhone to sketch and see how your current artboard looks on mobile. It's really useful as you can live check changes which lets you rapidly iterate mobile design.
Although it is possible to export certain Adobe file types in Sketch, compatibility is mostly hit and miss. For example, some elements seem a little offset in Adobe products.
Sketch has recently decided to cease development of major version (2.0, 3.0, 4.0) with free updates in between, and has switched to a license based subscription model. A yearly license costs $99 and includes the latest version of the Sketch software, plus a year of free updates. After this license expires, you can renew for another year of updates - or continue to use the current software without updates.
The Free Plan offers 2 active projects with at most 300 stencils each and 5 MB of storage. This plan does not include: Master Pages, Real Time Collaboration, Privacy Settings, Unlimited Revisions, Unlimited Project Archiving and Teams.
Doing anything that is not directly supported by Balsamiq's conservative component library is next to impossible. User is forced to think within the corset of yesterday's standards.
Balsamiq has a very easy to use drag and drop interface that lets you quickly build and adjust your mockups. The UI is centered around low-fidelity wireframes that help focus the reviews on the core layout and functionality instead of getting hung-up on visual design.
myBalsamiq has been built with teams in mind and has a variety of featured to support collaborating on the mockups:
Notifications - Real-time notifications to enable you to keep track of team member actions
Revision Control - All mockups have a revision history to enable reverting to previous versions and keeping track of design decisions.
Skype Integration - Easy to use Skype integration to host design reviews.
Access Control - Access controls allow sharing projects with team members as well as allowing external reviewers to leave comments on the designs.
UXPin offers elements from a wide range libraries. This includes responsive frameworks such as Bootstrap and Foundation, and libraries specific to mobile prototyping.