Web Apps are popping up everywhere. Five years or so ago, we could live without them, but as the internet has evolved we use them more and more in our daily lives.

We have put together a great compilation of beautiful web application interfaces.

The web applications that were selected to be part of this showcase are based on usability, simplicity, colors and overall layout.

Please note that WDD was not compensated in any way to review these apps.

Feel free to comment and add links to other excellent web UI designs in the comments area below. Enjoy!

Jamiq

Jamiq is a tool that lets you monitor the webs top search engines and social media websites in every language. It's the world's conversation on one dashboard.

FreshBooks

FreshBooks allows freelancers and small businesses to track time and invoice clients, fast.

Campaign Monitor

Campaign Monitor is a great email marketing app for designers and their clients. You can create, track and manage your subscribers.

CrazyEgg

CrazyEgg is a web app that enables you to track where people are clicking on a website.

MailChimp

MailChimp is an email marketing app that provides both free and paid options for users to design and track email marketing campaigns.

Donor Tools

Donor Tools have a top notch app that allows non profit organizations and charities to track donations and raise more money.

Designer Pages

A free social web application that gives people easy to use search options to find certain products dealing with architecture and interior design.

Wufoo

Wufoo makes creating web forms fast, easy and fun. Wufoo allows you to build registration forms, contact forms, invitations and even online surveys.

OneHub

OneHub is a beautiful project management system. You can send files and collaborate with other people.

Freckle

Freckle is a well designed app for time tracking. Freckle helps you see how long you've been working, what time, how many days, what's the billable time and what others are doing.

Authentic

Authentic is an easy to use customer relationship management application for small businesses and freelancers.

Pulse

Pulse lets you easily manage everything about your small business. From projects to finance and files to report.

Wistia

Wistia is an easy to use web app that allows video sharing and tracking to businesses.

Icebrrg Light CMS

Light CMS is a friendly content management system built for designers and their clients.

Snap Pages

Snap Pages is a web app that provides tools for anyone to create a website using simple drag and drop functionality.

Box

Box provides simple online collaboration to individuals and businesses.

Mint

Mint is a free personal finance app that allows people to manage their money.

ZenDesk

ZenDesk provides an amazing customer support ticket system to websites and businesses.

Harvest

Harvest is the all in one business app. With Harvest you can track time, invoice your clients, log expenses and manage revenue, all through a sleek interface.

iPlotz

iPlotz allows you to create clickable navigation mockups for prototyping websites and apps.

HootSuite

HootSuite is a professional Twitter client that allows you to manage multiple Twitter accounts, schedule Tweets and track your success.

PollDaddy

PollDaddy allows to engage your audience by creating beautiful polls and surveys.

Compiled exclusively for WDD by Andy Johnson, a freelance designer and developer living in South England. He currently freelances via his web design studio Pixeno, and he’s also working on his web app called Authentic. You can follow him on Twitter @Andy92.

Which interface do you like best and why? Do you use any great web apps?