WhatsApp is a most widely used cross-platform mobile messaging app for iPhone, BlackBerry, Android, Windows Phone and Nokia. Users can send text, images videos, audio for free. It almost replaced SMS. It changed the way people interact with each other. Lets check out the technology behind WhatsApp

Open Source Technology Stack used in WhatsApp

Email is most important in any organization. Lot of business are happening via Email. This article discusses about the end to end complete Email solution for an organization. What an organization requires? Email spam filtering, Email Server, Email Archiving and Email client. If all are open source then complete solution could be achieved free of cost.

Complete Email Solution for SMB

Wikipedia is a multilingual, collaboratively edited encyclopedia. It is one of the busiest site in the world. It has more than 8 million articles and accessed by millions of users around the world. This article briefly discuss about the open source software used in Wikipedia.

Open source projects used to in Wikipedia

Tumblr is a microblogging platform that allows users to effortlessly share anything.  Tumblr now hosts over 70 million blogs with over 34 billion posts to date. Below is the list of open source used in Tumbler.

Open Source Products used in Tumbler

Barack Obama election fundraising campaign was hosted online and the platform was built using open source products. The campaign stayed for 6 months and it has more than 8 million page views. This article explains the open source products used to build the platform.

Open Source used in Barack Obama Campaign

Git is a fast, scalable, distributed revision control system originally written by Linus
Torvalds. Git Server is initially written for Linux and later ported to Windows, Solaris and Mac. This article provides pointers to various Git server , Git clients, plugin and code review tools for Windows. It will be a Git complete solution stack for Windows.

Git Stack for Windows. Git Server, Client, Plugin and Code review tools for Windows.

Subversion version control system is most popular and widely used. Windows users always want easy to install, easy to configure and easy to use applications. This article explains about few set of tools which used in combination will bring you complete Subversion solution in windows.

Simple and Complete Subversion solution in Windows

Email is the primary way of communication. Small organization which hosts their website / any other application from a third party hosting service providers may require this email stack.

Simple Mail Stack for Linux Hosted Environment

SourceForge.NET is most popular and widely used Forge. It helps to host software projects. It has integrated support for Wiki, Forum, Tracker and Full text search. The code base named allura, is completely built on open source stack. This article explains few important one used to build SourceForge.NET.

Open source software used in SourceForge.NET

Pinterest is a tool for collecting and organizing things you love. It is a social networking site 
  where users could pin images and write a note for that. It is now currently serving billions of pages every month. Check out the open source products used in Pinterest.

Open Source Products used in Pinterest

In this article we will explore about Apache Commons library in Java

Introduction to Apache Commons Lang

In this article we will explore about Google Guava library 

How to Leverage Google Guava library for efficient Java development

Deep Insight on Lodash js library, Learn with Examples

Deep Insight on lodash.js library

In this article, we will learn about how to create Bar Chart, Area Chart, Bubble Chart, Doughnut and Pie Charts, Line Chart, Mixed Chart Types, Polar Area Chart, Radar Chart, Scatter Chart, Cartesian Axes, Category Axis, Logarithmic Axis, Radial Axes, Labeling Axes, Styling using ChartJS.

ChartJs Visualization Library - A Detailed Walkthrough

Data Visualization Using Tremor React Library

In the world of data visualization, charts play a pivotal role in conveying information in a visually appealing and easily understandable manner. Charting libraries simplify the process of creating various types of charts, enabling developers to showcase data trends, comparisons, and distributions effectively. 

Create Basic Charts with ChartJS

Coursera is a social entrepreneurship company that partners with the top universities in the world to offer courses online for anyone to take, for free. Their courses include in various categories like Biology, Business management, Computer science, Robotics, Artificial Intelligence, Finance, Nutrition, Law, Mathematics, Medicine, Genetics, Data analytics and lot more.



Coursera - Take the World's Best Courses, Online, For Free

EdX is an online learning platform founded by Harvard University and the Massachusetts Institute of Technology (MIT). Along with offering online courses, the institutions will use edX to research how students learn and how technology can transform learning–both on-campus and worldwide. EdX is based in Cambridge, Massachusetts and is governed by MIT and Harvard.

EdX - The Future of Online Education from MIT and Harvard

Bloom Filter in Java using Google Guava. Bloom Filter is an probabilistic data structure which checks the presence of an element.

Bloom Filter in Java using Google Guava

I have been writing on the desktop image processing application. At the version 1.0, I use the octree color quantization algorithm to reduce image to 256 colors, which is highly memory efficient with each pixel assigned the color at the center of the octree bin in which it falls. On the other hand, generates the palette using the distribution of colors in the image, but it does not consider the frequency of color. This means that if an image is composed of similar colors overall but has many different low-frequency colors or noise, octree's results can be very poor.

Top 3 color quantization algorithms

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