Blender
Blender is a free and open-source video editor and 3D computer graphics software application. It is not only a video editor it can also be used for creating 3D printed models, animated films, visual effects video games, and interactive 3D applications. The video editor tool of Blender enables you to perform different actions on your video like splicing, video cutting, and masking. Blender video editor tool is very comprehensive software it provides different features to their user. Some of these excellent features are live preview, waveform visualization, chroma vectorscope, audio mixing, luma waveform, keyframes, filters, Speed control, and many more. It also presents features of a new unbiased rendering engine called Cycles that offers stunning ultra-realistic rendering.

D3
D3 (Data-Driven Documents) is an excellent open-source tool, used for data visualization in Web documents. It is used to organize the data, by using D3 you can manage the arbitrary data to document the object model. And by using D3 you can apply data-driven transformations to the document. D3 allows you generate an HTML table for a different array of numbers. It has the ability to enhance the life of data by using HTML, CSS, and SVG. It provides powerful visualization components and provides the capability of modern browsers without using any appropriate framework. D3 solves the crux of the problem like efficient manipulation of documents based on data. It is very fast and provides dynamic interaction and animation. It allows you to reuse code through a diverse collection of components and plugins.

SugarCRM
SugarCRM is another popular open-source customer relationship management software solution. The trio of John Roberts was founded in 2004. This customer relationship management(CRM) application is written in PHP. It has the ability to work with Microsoft SQL Server database and MySQL database. SugarCRM can be used for multipurpose in business, you can use it as a marketing tool, customer information storage, analyzing, and reporting. It comes in two versions. One version is commercial and the other one is open source. The hosted version of SugarCRM is a commercial version while the Community version of SugarCRM is free and opens source.

Git
Git is a free and source distributed revision control system. It is designed in such a way that it handles everything from small to very large projects with speed and efficiency. Git was initially introduced and designed by Linus Torvalds for Linux kernel development. Its emphasis on data integrity, speed, non-linear workflows, and support for distribution. It has the ability to handle small to large projects in a very efficient way and provides the branching model which provides safe experimentation. It is written in C language and it provides the cryptographic authentication of history. Git design consists of pluggable merge strategies and periodic explicit object packing.

Apache Spark
The Apache spark is an open-source fast and general engine for large-scale data processing. It supported across platforms. It enables us to write applications quickly in Java, Scala, Python, R. It runs programs up to 100x faster than Hadoop MapReduce in memory. It provides support for group chat, telephony integration, and strong security. It can be run on Hadoop, Mesos, standalone, or in the cloud. It provides an excellent end-user experience. It provides the features of tabbed conversations, group chat, in-line spell checking, etc