Open Source Resources for Web Application Developers

PicMarkr lets you to add custom watermark (image or text) to your images online and free. It is useful when you need to protect your copyrights or if you want to add comments to your photos. It is easy to use with minimum settings, no need to download or install anything. You simply need to upload files from computer or grab them from your Flickr account. It also allows batch image processing, it can saves you a lot of time when you are adding watermark to many images.

Requirements: -
Demo: http://picmarkr.com
License: License Free

3d package is a 3d-box graphic generator. 3d package lets you instantly create 3d-box images online for free. Just upload pictures for cover and sides and then get 3d-box in you favorite image format (JPG, GIF, PNG supported). You can use it anywhere you like, I think it would be useful when you would like a 3d-box image for your web applications.

P.S. You can also create CD-box and DVD-box easily as well.

Requirements: -
Demo: http://3d-pack.com/
License: License Free

There are more than 1 billion keywords searched every month by users around the world. Finding the correct ones for your website is not an easy task. Hundreds of hours must be spent in searching for the right keywords for one ad campaign.

Your competitors know best, why not let them do all the hard work by spending time and money on keywords you in turn will use for your ad campaign. With just a few clicks you can create a large targeted keyword campaign. Only use keywords that are proven to generate sales and save money.

Companies with a much larger list of keywords drive more traffic to their sites compared to those who have less. KeywordSpy helps drive traffic from competing sites to your own instantly, resulting in optimum exposure at the least amount of time and costs.

4 Simple Steps

• Type in a keyword or domain
• View your competitor’s keywords
• Import keywords for your own ad campaign
• Watch your revenue grow

Requirements: -
Demo: http://www.keywordspy.com/
License: License Free

Have you thought of uncompressing your zip files online? Although, Wobzip is still in the process of development, I found it works very well and easy to use. It supports different formats of zip files, e.g. 7z, ZIP, GZIP, TAR, BZIP2, RAR, CAB, ARJ, Z, CPIO, RPM, DEB, LZH, SPLIT, CHM, ISO. After uncompressed the zip file, you can download the unzipped files easily. It has virus detection as well.

Requirements: No Requirements
Demo: http://wobzip.filetap.com/
License: License Free

The number of subscribers is very useful for bloggers to determine the popularity of their blogs. Yet, bloggers may hope that the FeedBurner stats can tell us how fruitful our effort results without much analytical calculation on our own. As such, Blog Perfume has developed Feed Analysis v1.0 which can provide bloggers, with the aid of beautiful interactive charts, a more detailed report and analysis from our feeds.

By the use of Feed Analysis, the number of subscribers for each month is neatly shown on the column chart. You can also view the number of subscribers, hits, views and clicks for every single day from the line chart. The best/worst day of the week is also available which is displayed on the pie chart. And also, Feed Analysis can give you an estimated value for your blog / site according to the number of your subscribers. From now on, you can analyze your feeds online for FREE to use as long as you have a Feedburner account.

Requirements: No Requirements
Demo: http://www.blogperfume.com/feed-analysis/
License: License Free

Vectorization is the process of converting a raster image to a vector image. Raster images are pixel-based, whereas vector images are represented by geometric shapes such as lines, circles and curves. Vector art is useful because it allows you to scale an image without making it blurry or pixelated.

Vector Magic converts bitmap images to vector art – it’s an online auto-tracer. Just upload your image and Vector Magic will vectorize it for you.

Requirements: No Requirements
Demo: http://vectormagic.stanford.edu/
License: License Free

Have you thought of running your web application in it’s own window? Prism can let you run your web application on desktop without changing the code. Mozilla Labs is launching a series of experiments to bridge the divide in the user experience between web applications and desktop apps and to explore new usability models as the line between traditional desktop and new web applications continues to blur.

Unlike Adobe AIR and Microsoft Silverlight, they are not building a proprietary platform to replace the web. Their goal is to identify and facilitate the development of enhancements that bring the advantages of desktop apps to the web platform.

There are more and more of people are using web applications. But the web application often fit awkwardly into the document-centric interface of web browsers. And they are surrounded with controls–like back and forward buttons and a location bar–that have nothing to do with interacting with the application itself. Prism is an application that lets users split web applications out of their browser and run them directly on their desktop. You do not need to change your web application, you just need to install Prism in order to run your web application on your desktop.

Requirements: Installation Required
Demo: http://labs.mozilla.com/2007/10/prism/
License: License Free

Developing a fully functional and useful web application is tedious, testing the web application is more tedious. We have to make sure the web application is working well without any bugs. We have to make sure the web application is still running smooth when hundreds or thousands of people are using it at the same time. It is difficult to perform these testings without the aid of a testing software.

This paid review from ReviewMe is exactly what we need. Wapt is a load and stress testing tool that provides you with an easy-to-use, consistent and cost-effective way of testing web sites, web servers, and intranet applications with web interfaces.

Simulate Real User Activities
You can simulate real user activities by creating many different users who are coming from different IP addresses, each with their own parameters: cookies, input data for various page forms, name and password, connection speed and their own specific path through the site. You can even simulate random time between user clicks to make each virtual user as similar as possible to a human user. So that you know exactly how the server and web application react if users are using your web application.

Thousands of Users in One Test
If you want to simulate thousands of users, you do not need to specify separate behavior for each of them. You specify behavior for each type of users and use as many virtual users of each type as you need. It makes you really easy to test the web application with thousands of users easily.

Extras
There are other useful features for example, you can perform testing on dynamic web applications, test the HTTP requests that include parameters that are specific for each user. WAPT also supports testing of web sites and applications secured by SSL. You do not need to perform any additional actions for the testing.

Descriptive Test Reports and Graphs
And finally, WAPT displays test results through descriptive reports and graphs. They are available even during the test, so you can monitor key parameters of web application performance on the fly and see how your site responds to the increasing load volume. You can also save test results in MS Excel compatible format which is really handy.

30-day Trail Version
WAPT is designed for Microsoft Windows 98/ME/NT/2000/XP. It costs $350 for 1 unit, you can get cheaper price if you order more than 2 units. I suggest you download 30-day trial version first. Once you are think the product is right for you, you can buy it afterwards. I personally found it very useful, you will really need it if you are going to build a web application for large amount of users.

Showcase Point is a daily updated showcase for website showcases / galleries all over the world which contains a lot of nice CSS showcases and flash showcases. Website showcases are very important to webmasters. They can drive a lot of traffic to your website once your site is published on one of the most popular showcases. We love to submit our websites to those showcaes, however where can we find them?

Showcase Point is the one designed to help you find the nice showcases, and provide you a place to do the review, discussions about the showcase. They also provide you the PageRank for reference. Once you have find the chosen ones, you can press “Submit” button, submit your site through a popup window easily without leaving the list of showcases. I think it is a really good source of inspiration.

Requirements: No Requirements
Demo: http://www.showcasepoint.com
License: License Free