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Open Source Projects
Blueflood - A distributed system designed to ingest and process time series data
Blueflood is a high throughput, low latency, multi-tenant distributed metric processing system behind Rackspace Metrics, which is currently used in production by the Rackspace Monitoring team and Rackspace Public Cloud team to store metrics generated by their systems. Data from Blueflood can be used to construct dashboards, generate reports, graphs or for any other use involving time-series data. It focuses on near-realtime data, with data that is queryable mere milliseconds after ingestion.
time-series-database time-series metricsNatron - Video compositing software
Natron is a video compositing software, similar in functionality to Adobe After Effects, Nuke by The Foundry, or Blackmagic Fusion. It offers a real-time playback with thanks to its RAM/Disk cache technology. Once a frame is rendered, it can be reproduced instantly afterwards, even for large image sizes.
audio-editor video-editor video audio sound-editing compositing special-effects vfxCalico - A pure layer 3 approach for Virtual Networking for highly scalable data centers
Project Calico represents a new approach to virtual networking, based on the same scalable IP networking principles as the Internet. Unlike other virtual networking approaches, Calico does not use overlays, instead providing a pure Layer 3 approach to data center networking. Calico is simple to deploy and diagnose, provides a rich security policy, supports both IPv4 and IPv6 and can be used across a combination of bare-metal, VM and container workloads.
virtual-networking virtual-router virtual-switch data-center infrastructure l3 bgpCKEditor - The best browser-based WYSIWYG editor
CKEditor is a text editor to be used inside web pages. It's a WYSIWYG editor, which means that the text being edited on it looks as similar as possible to the results users have when publishing it. It brings to the web common editing features found on desktop editing applications like Microsoft Word and OpenOffice. It's an editor to be used inside web pages.
html-editor wysiwyg-editor editor embeddedZulip - Group Chat
Zulip is a powerful, open source group chat application. It supports both private messaging and group chats via conversation streams. Zulip also supports fast search, drag-and-drop file uploads, image previews, group private messages, audible notifications, missed-message emails, desktop apps, and much more.
chat im instant-messaging group-chat collaboration slack-alternativeFeatured Post
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.
smtp-testing testing-tool smtp test automation email-server emailJWT 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.
java jwt authentication securityGenerate 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.
thumbnail image-processing javaGreenMail - 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.
email email-server test automationActiviti - Open Source Business Automation
Activiti Cloud is the first Cloud Native BPM framework built to provide a scalable and transparent solution for BPM implementations in cloud environments. The BPM discipline was created to provide a better understanding of how organisations do their work and how this work can be improved in an iterative fashion.
business-automation business bpmTech 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.
uber open-source stack technology-stackStackoverflow 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.
stack software-used stackoverflow-architecture stackoverflow-stackOpen 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
whatsapp chat messaging-appFree 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.
java openjdk build-toolsZimbra - 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.
software-used stack mail-server
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