Hi,welcome to KnowledgeSuttra. Here i am going to quote GitHub top free essential apps which give you a better coding experience. Even though those are apps come in paid version with better features and higher status you better try free trial of 14 days of Your codes to make sure weather its suitable to your environment or not.
Here I am just mentioning A single app from each category to work with your work and try,of course you can also explore and install most of the 0$ apps and installed them on your GitHub organization or account.
Code quality :-
Maintain your code review with style, quality, security, and testing in accordance whenever you need them.
“StyleCI makes it a smoother to puncture my favored my style of coding which thus enabling me to contribute more opportunity to growing new highlights.”
It stimulates open-source developers to follow the same coding ethics. It allows me to dedicate to actual code and it better saves the time before a pull request is taken in the master branch.
It all gives us the strength to make fast changes to our app and apply coding standards simultaneously.
2. Continuous Development and Merge
Automatically build and test your code as you push it to your repository,preventing bugs from being deployed to final output.
It shows you exactly what visual changes are happening in you user interface . it is built from the ground up to handle modern web apps and components, from the simplest to the most complex.
Analyse the impact of your code changes. Measure performance, analyse errors , and analyze your application.
This amazing library detects errors and exceptions in your application and reports them to Rollbar for alerts, reporting, and analysis
It is provided with better equipped user interface that merges flawlessly with GitHub repository. You can take command of your project within the environment which you are familiar with, without the bound to learn a new pattern.
Also it empowers you to know the repository of your project better with well grained data tools. You will be able to manage your project with the help of flowcharts and story like short description.
Thanks & regards