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Framework is a platform that allows developers to build web applications. In this article, we list down the top 7 web development frameworks used in 2020. Django Django is an open source web application framework used for the fast development of APIs and web applications. Any type of applications can build easily with help of the Django framework. By using Django we can build applications like social networks, content management systems and scientific computing platforms etc. Some of the best websites that use this framework are PBS, Instagram, Google, YouTube, Bitbucket and Mozilla. Key Features AngularJS AngularJS is an open source JavaScript framework used for developing web applications. This framework provide options to developers to write client side applications using JavaScript in a Model View Controller. AngularJS offers built-in protection against basic security which include HTML injection attacks. Applications which are written in AngularJS are cross-browser compatible . Key Features React JS React.js is an open-source JavaScript frontend library used for developing fast and interactive user interfaces for web and mobile applications. This framework can be used as a base in the development of single-page or mobile applications. Key features Spring Spring is an framework for java enterprise used for developing high performance web applications. This framework helps developers in creating simple, high performing, fast, flexible web applications in java based on MVC architecture . The core features of the Spring Framework can be used in developing any Java application. Some of the top websites like bill guard and wix are users of spring. Key Features Laravel Laravel is a framework developed by Otwell used for developing web applications. This framework is very secure and also helps to secure the web application by protecting it against security risks such as cross-site scripting, SQL injection, cross-site request forgery. It is advanced backend web application framework and it uses PHP language and it follows model view controller architecture . The latest version is Laravel 5.2. Key Features Ruby on Rails Ruby on Rails is an open source web application framework developed by David Heinemeier Hansson. This framework is a MVC backend web development framework that makes your software development very easier as It provides three environment like development, testing and production. Rails framework provides developers with the pre-define solution that helps them to perform repetitive tasks. Users of Rails are Shopify, GitHub, Zendesk. Ruby on Rails minimizes the website development time by 25-50 percent as compared to other popular web frameworks. Key Features Express.js Express.js is an open source Node JS web application server framework for developing web applications. This framework is standard framework for node.js and supports full applications including REST API . Express framework easily connects to databases such as MongoDB, Cassandra, Oracle, Level DB, MySQL and also integrates with template engines like Jade, Mustach, Dust, etc. Some of companies like Myntra , Accenture, Client Platform, IBM are using Express . Key Features

Few points to remember before developing a mobile app and testing checklist: The platforms for mobile applications To develop the mobile application ios and android are the preferred platforms. However, the developing world uses Symbian phones. It’s good to know upfront which platforms are expected to be supported. So that it will help to make crucial decisions regarding architecture/design. And it also provides an idea of whether to develop a completely native application or use a framework like PhoneGap. The most famous platforms are listed below: Screen Resolution Screen resolution is also an important factor to be considered. At present smartphones and tablets are in different shapes. So make sure that the application looks good on the targeted screen. Landscape orientation or portrait Some game applications work only in landscape mode and some applications work only in portrait mode. And some game applications work on both types of modes. Make sure that the application works properly in both modes and while changing the mode ensure that the application is without any issues. GPS functionality and accelerometer If the mobile application is some medical-related that is for example labs and diagnostics then GPS plays a crucial role. Make sure that how the application responds when GPS is disabled and how it responds when enabled.And coming to an accelerometer, it is a meter which shows the movement or vibration of a body. If the application needs an accelerometer then make sure that it gives accurate readings. Example of the application which contains this accelerometer is jump trackers, 3d visualization, games and so on. Network issues There are different networks like 2G, 3G,4G, and WIFI. The application should be developed in such a way that it supports any type of network. Not all users contain WIFI some users may use 2G or some may use 4G. That means the application should be tested based on the real scenarios. And another important network issue arises when the user is traveling. At that time how the application is working with intermediate network speed? And how the application works at user location where there is no wifi. The application must be capable of handling all these situations. Web app updates plus test mobile If the mobile application contains web service or server-side components. If the scenario is any update is done on web services also reflect in the mobile application. If it is the case then ensure that it works properly to avoid any human error. Security of mobile application Data privacy is a very very important scenario. If the application is something like online payment example google pay. The user gets worried if the credentials are not secured. If the credentials are not secured then that application has no hope to see success mostly it is not even alive. So make sure that the application provides good security.

There are several different models in the software development life cycle. Some of them are mentioned here. The basic phase and activity are the same for all the models. They are mentioned below: 1. Waterfall model The waterfall model is also known as a linear sequential model. It is the very first model in the software testing life cycle. Once phase output is input for another phase. The next phase starts only when the previous phase is completed. The step by step process is mentioned below: Requirement Analysis In this phase, requirement gathering is done for the application. SRS(Software Requirement Specification) documentation is prepared in this phase. This is the input for the next phase. System Design System design is prepared in this phase by studying the (Software Requirement Specification)SRS document. This design is useful to know the requirements of hardware as well as the system. And also defines the architecture for the overall system. Implementation/Coding In this implementation/coding phase coding is done by the developers by thoroughly studying the (Software Requirement Specification) SRS. This developed software is input for the next phase. Testing The software code is tested by the tester thoroughly to find the defects. If any defects are present then defects are logged into the defect tracking tool. Until the time the software is in go-live state bug logging, retest, regression goes on. Deployment After the sign off is given by the customer in the Deployment phase, the developed code is moved into production. Maintenance If any issue arises in the production environment developers will resolve it. The advantages of the Waterfall model: The disadvantages of the Waterfall model 2. V-shaped model It is known as the verification and validation model. In this model development and testing goes parallel. There are two main phases in the v-model. Verification phase The following are the steps involved in this phase. Validation model The following are the steps involved in this phase. The advantages of the V- shape model The disadvantage of the V-shape model 3.  Agile model It is a combination of an iterative and incremental model. This model focuses more on development rather than a requirement. The application is divided into small incremental builds. In this iterations are termed as sprints. At the end of each sprint, the product owner verifies the product and after his approval, it is delivered to the customer. The advantages of Agile model The disadvantages of the Agile model