Open Source Projects

jFreeChart - Java and .NET chart library


jFreeChart is a widely used open source charting library. Its flexible design is easy to extend and targets both server-side and client-side applications. It supports many output types, including Swing components, image files (PNG and JPEG) and vector graphics file formats (including PDF, EPS and SVG).

Orson Charts - A 3D chart library for Java applications (JavaFX, Swing or server-side)


Orson Charts is a 3D chart library for the Java(tm) platform that can generate a wide variety of 3D charts for use in client-side applications (JavaFX and Swing) and server-side applications (with export to PDF, SVG, PNG and JPEG).

MPAndroidChart - A powerful Android chart view / graph view library


A powerful & easy to use chart library for Android. It supports many different chart types: LineChart, BarChart (vertical, horizontal, stacked, grouped), PieChart, ScatterChart, CandleStickChart (for financial data), RadarChart (spider web chart), BubbleChart. It can smooth rendering for up to 10.000 data points in Line- and BarChart.

retrofit - Type-safe REST client for Android and Java


Retrofict is a type-safe HTTP client for Android and Java. It uses annotations to describe the HTTP request. It supports multipart request body, file upload, Object conversion to request body (e.g., JSON, protocol buffers).

dbatools - PowerShell module to help SQL Server Pros be more productive


dbatools is sort of like a command-line SQL Server Management Studio. The project initially started out as Start-SqlMigration.ps1, but has now grown into a collection of over 400 commands that help automate SQL Server tasks and encourage best practices.




Featured Post

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.

MailHog - Web and API based SMTP testing


Most of the projects will have a requirement of sending and receiving mails. We have mentioned about GreenMail - Email Test Framework, in our previous article about API based SMTP testing. In this article, we discuss about MailHog - Web and API based SMTP testing. You send out a mail from your code and you can check it via web visually and also via API. Those who do API testing can check via API. Developers may want to visually verify the format of the mail. MailHog is a best bet for SMTP testing.

JWT Authentication using Auth0 Library


Json Web Token shortly called as JWT becomes defacto standard for authenticating REST API. In a traditional web application, once the user login credentials are validated, loggedin user object will be stored in session. Till user logs out, session will remain and user can work on the web application without any issues. Rest world is stateless, it is difficult to identify whether the user is already authenticated. One way is to use authenticate every API but that would be too expensive task as the client has to provide credentials in every API. Another approach is to use token.

Generate Thumbnail in Java using Thumbnailator library 


In our work there will be situation where we need to resize the image, generate thumbnails and so on. Users need to have little bit of image processing knowledge to achieve it. We have Java ImageIO APIs to achieve these functionalities. As said, we need to be aware of or spend time in learning these APIs. To help us, Thumbnailator library provides easy fluent style API and generates thumbnail in simple three lines of code.

GreenMail - Email Test Framework in Java


In any project there will be a need to send mail out to users. It could be an alert mail, forget password or authentication related mail. Mail is the default communication between the software and the users. As a developer, we can write code, to send out a mail but we need to make sure whether it got successfully received and how the body of mail, Is it the same like what we have sent. GreenMail is a Email test framework which helps to send and receive mails. It is a test framework which supports SMTP, POP3, IMAP including SSL.


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.