It's FOSS Technology Stack

4D is a platform that simplifies and speeds up the development and deployment of web, mobile, desktop, and client-server applications.

AMP is a way to build web pages for static content that render fast.

ASP.net is an open source framework for building web applications and services with .NET and C#.

Backbone.js is a JavaScript framework with a RESTful JSON interface and is based on the model–view–presenter application design paradigm.

Browser Update is a website widget to inform your visitors unobtrusively to switch to a newer browser.

Emacs is an extensible, customizable text editor.

Font Awesome makes it easy to add vector icons and social logos to their website.

Gravatar is a service for providing globally unique avatars and was created by Tom Preston-Werner. It is owned by Automattic, having integrated it into their WordPress.com blogging platform.

Amazon CloudFront is a content delivery web service.

Cloudflare Content Delivery Network (CDN) is a geographically distributed group of servers that ensure fast delivery of Internet content, including HTML pages, JavaScript files, stylesheets, and images.

GitHub is a place to share code with friends, co-workers, classmates, and complete strangers, helping individuals and teams to write faster, better code.

GitLab is a web-based Git-repository manager with wiki, issue-tracking and CI/CD pipeline features, using an open-source license, developed by GitLab Inc.

GNU Make is a tool which controls the generation of executables and other non-source files of a program from the program's source files. Make gets its knowledge of how to build program from a file called the makefile, which lists each of the non-source files and how to compute it from other files.

Google Firebase is an application development platform for creating mobile and web applications.

Medium is a blog-publishing platform.

Optimizely is a website optimization platform providing A/B and multivariate testing with tools to track engagement, clicks, conversions and sign ups.

Cloud based storage systems by AWS.

Amazon Web Services (AWS) is a comprehensive, evolving cloud computing platform provided by Amazon that includes a mixture of infrastructure as a service (IaaS), platform as a service (PaaS) and packaged software as a service (SaaS) offerings.

Android is a mobile operating system based on a modified version of the Linux kernel and other open source software, designed primarily for touchscreen mobile devices such as smartphones and tablets.

FreeBSD is an advanced computer operating system used to power modern servers, desktops, and embedded platforms.

FreeDOS is a DOS-compatible operating system that can be used to run legacy business software, or develop embedded systems.

Gentoo is an operating system based on either Linux or FreeBSD and can be customized for just about any application or need.

Linux is a family of open source Unix-like operating systems based on the Linux kernel.

Microsoft Exchange Archiving is a cloud-based, enterprise-class archiving solution that helps clients to solve archiving, compliance, regulatory, and eDiscovery challenges.

Apester provides interactive units like Personality, Polls, Quiz and Videos to enhance content and boost engagement.

AsciiDoc is a text document format for writing notes, documentation, articles, books, ebooks, slideshows, web pages, man pages, and blogs.

Discourse offers an open source platform for running discussion forums.

Online surveys, email opt-in forms, contact forms, popups, follow, share buttons and live chats — all in one place!

Hint Health is a membership management, billing, patient communication and engagement platform for healthcare providers.

With Nextcloud enterprises host their own secure cloud solution for storage, collaboration & communication from any device, anywhere.

Shopify is a commerce platform that allows anyone to easily sell online, at a retail location, and everywhere.

BigBlueButton is an open source web conferencing and social collaboration software utilized by educational institutions for providing e learning facilities.

Google Voice is an Internet service that uses VoIP technology to link phone numbers together.

Open-source web chat platform.

Telegram is a cloud-based mobile and desktop messaging app with a focus on security and speed.

Cloudflare mitigates threats from website scraping to application level attacks e.g. SQL Injection and DDOS Protection without any additional hardware.

GnuPG allows to encrypt and sign the data and communication, features a versatile key management system as well as access modules for all kinds of public key directories.

reCAPTCHA is a CAPTCHA-like system designed by Google to establish that a computer user is human.

Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare have all traffic routed through its intelligent global network, which gets smarter with each new site added.

CodePen is a web-based HTML, CSS, and JavaScript code editor that enables its users to experiment with code right in the browser.

Craft is designed to facilitate the entire product lifecycle: ideation, requirements, roadmapping, sprint planning, feedback collection and management.

Feedly is a news aggregator application that compiles news feeds from online sources for users to customize and share with friends.

Google Sheets is a spreadsheet program for data analysis.

Google Analytics allows users to measure sales & conversions, plus gain fresh insights into how visitors use sites, & how they arrived on site.

Google Translate is a multilingual neural machine translation service developed by Google, to translate text, documents and websites from one language into another.

Google Calendar is an get a button on its browser toolbar that they can easily click to see upcoming events from google calendar, without ever leaving their page. And if they are on sites that have special events encoded, it can click the button to instantly add events to they calendar.

G Suite is a suite of apps from Google which offers a number of tools to communicate and collaborate with colleagues, store files, and manage data.

KPI.com is a cloud-based, all-in-one business software which supports dedicated stand-alone apps that also work as a suite, to help users sell, manage their employees, keep books in order, be productive at work and make smart business decisions.

ONLYOFFICE is a secure web office integrated with CRM, document&project management, email, calendar, chat and internal social network, all to organize the teamwork in one place.

Pocket enables people to save interesting articles, videos and more from the web for later enjoyment. Once saved to Pocket, the list of content is visible on any device phone, tablet or computer.

Simplenote is an easy way to keep notes, lists, ideas, and more. This note taking application is free and based in the cloud, so they can use it on the web or through a variety of applications.

Indiegogo is a crowdfunding engine that helps individuals, groups and non-profits raise money online to make their ideas a reality.

Kickstarter is a crowdfunding platform for creative projects such as movies, music, art, theater, games, comics, design, and photography.

Microsoft Invoicing is an online & mobile invoicing solution which allows users to create & send PDF format invoices to customers and accept payments via Pay.

Patreon enables creators to earn ongoing revenue directly from their fans.

Privacy let's you create virtual cards with the from your browser or phone and protect yourself from fraud and hidden charges.

OptinMonster helps to convert abandoning website visitors into subscribers and customers.

Quality creative freelancers to help you grow.

WooCommerce is an eCommerce plugin for Wordpress