Open Source Projects

Vue Storefront - headless PWA for any eCommerce


Vue Storefront is a standalone PWA storefront for your eCommerce, possible to connect with any eCommerce backend (eg. Magento, Pimcore, Prestashop or Shopware) through the API. Vue Storefront is and always will be in the open source. Anyone can use and support the project, we want it to be a tool for the improvement of the shopping experience. The project is in the production ready phase.

pgModeler - PostgreSQL Database Modeler


pgModeler - PostgreSQL Database Modeler - is an open source data modeling tool designed for PostgreSQL. No more DDL commands written by hand let pgModeler do the job for you! This software reunites the concepts of entity-relationship diagrams and the features that PostgreSQL implements as extensions of SQL standards.

mgob - MongoDB dockerized backup agent. Runs schedule backups with retention, S3 & SFTP upload, notifications, instrumentation with Prometheus and more.


MGOB is a MongoDB backup automation tool built with golang. Its features include Schedule backups, Local backups retention, Upload to S3, Google Cloud and lot more. It is distributed as an Alpine Docker image.

Karma - Spectacular Test Runner for JavaScript


Karma is essentially a tool which spawns a web server that executes source code against test code for each of the browsers connected. The results for each test against each browser are examined and displayed via the command line to the developer such that they can see which browsers and tests passed or failed. It is a simple tool that allows you to execute JavaScript code in multiple real browsers.

Java Design Patterns - Design patterns implemented in Java


Design patterns are formalized best practices that the programmer can use to solve common problems when designing an application or system. Design patterns can speed up the development process by providing tested, proven development paradigms.




Featured Post

Connect to MongoDB and Perform CRUD using Java


MongoDB is a popular and widely used open source NoSQL database. MongoDB is a distributed database at its core, so high availability, horizontal scaling, and geographic distribution is quite possible. It is licensed under Server Side Public License. Recently they moved to Server Side Public License, before that MongoDB was released under AGPL. This article will provide basic example to connect and work with MongoDB using Java.

Read and Write PDF using OpenPDF


OpenPDF is based on a fork of iText version 4. iText is a widely used PDF library but they changed their license and moved to AGPL. In this article, we can see how to read and write to PDF, How to extract text from PDF and How to create password protected PDF.

mkcert - No config certificate authority tool


Mkcert is go-lang project, which is super easy tool to setup certificate authority without any configuration. Using certificates are inevitable these days, data should be transferred in a secure communication channel. Buying a certificate is expensive and mostly companies buy certificates only for production systems. In Dev setup, if we use self-signed certificate then there will be trust errors. mkcert automatically creates and installs a local CA in the system root store, and generates locally-trusted certificates.

Top 3 color quantization algorithms


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.

Compress files faster using Snappy


Snappy is the fast compression/decompression library from Google. It does not target to reduce compression size but it does faster compression. Most of the open source products use Snappy.


Tech Stack

Uber's open source technology stack


Uber, a taxi aggregation platform operates around the globe. It was started as monolith application and later re-architected as bunch of microservices, which gives them scalability. Uber uses lot of open source tools and they have contributed quite a lot projects back to the community. This article is about analyzing Uber's open source technology stack.

Stackoverflow Open Source Technology Stack


Stackoverflow is one of most widely used Q&A platform. It is the default choice of developers. It has over 100 million page views in a month and its Google page rank is 60. Check out its open source technology stack, the tools used to build such a popular website. Stackoverflow uses open source projects and also contributes to it.

Open Source Technology Stack used in WhatsApp


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

Free and Open source tools to build OpenJDK in Windows


OpenJDK is the open source implementation of Java Standard Edition. Oracle (Sun) JDK implementation is going to be based on OpenJDK. OpenJDK and Oracle JDK are almost similar. There are ready made binaries available for Linux distribution but you may need to build OpenJDK on windows.

Zimbra - Enterprise Email Server Stack


Zimbra is a Enterprise messaging and collaboration software. It is a good alternative to Microsoft Exchange server. Zimbra is a Email Server but they have not written anything related to SMTP server, rather they have integrated well know open source email server in to its package. Zimbra is a system of well connected / integrated multiple open source software which delivers enterprise quality to it. This article explains most important components which helps to build the enterprise product.