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Top 12 Free And Paid Code Quality Tools For Web Developers 2019

Top 12 Free and Paid Code Quality Tools for Web Developers 2019

Programming has become one of the biggest and most innovating industries on the planet. Web development, software development, software engineering, database administration, hardware engineering, even simple freelancing can bring about work related to programming and the use of code. Programming for the most part is appealing because it promises creative expression. But it’s also high-end jobs that can help skilled programmers earn up to $200,000+ a year, without having to do much more than write and optimize code.

The leading Worlds technology companies; Google, Microsoft, etc., have been known to provide its workers with incredible life-long benefits in exchange for their loyalty and service to the company. Money is oftentimes a factor for freelancers and individuals to start their self-taught programming journey, since there is no shortage of learning materials available; for any kind of programming language imaginable. Though there is one simple catch with the idea of teaching yourself how to program.

Code quality has always been an issue within the programmers communities. Good code is the kind of code that one can reuse years after it has been written. Whereas, low quality programmers will oftentimes write code that is meant to solve a problem that exists at the time of writing the code, rather than thinking ahead of time as to how to scale the code base as it grows, and how to write code that other programmers would be easily able to follow along in case of someone else having to take over a specific project. To battle this, programmers need to introduce themselves to programming language style guides, but also to code quality testing tools that enable to check code against common issues and misuses.



SonarQube offers continuous code testing features that will ensure your code files, code projects, modules and folders are always tested for quality and will allow you to stay on top of the game when it comes to good quality code. The main areas of focus of the SonarQube platform are comments, coding rules, potential bugs, complexity, unit tests, duplications, and architecture & design. Whether you’re a small business company, a freelancer or a fully scaled enterprise corporation, SonarQube has something to offer to all levels of coding enthusiasts; projects.

Closure Linter

Closure Linter     Google Developers

The Closure Linter is a utility that checks JavaScript files for style issues such as operator placement, missing semicolons, spacing, the presence of JsDoc annotations, and more. The thing to remember about Closure Linter is that it follows Google’s official style guide for JavaSript. Linter itself is built in such a way that it can automatically detect and fix common code problems without your direct interaction, helping you to remain more productive as your project continues to grow. Works fine on Mac, Linux and Windows computers.


ESLint Pluggable JavaScript linter

ESLint is a tool for identifying and reporting on patterns found in ECMAScript/JavaScript code, with the goal of making code more consistent and avoiding bugs. You will need to have Node.js pre-installed in order to use ESLint. This particular linter is being used by companies like Facebook, Box, PayPal, Zendesk and many more. Linting is all about analysing the code without having to execute it; ESLint, as a tool, is somewhat of an expert in this area. Write your code, sit back and relax as it is being thoroughly optimized without the need to manipulate it.


JSHint a JavaScript Code Quality Tool

JSHint is another famous static code analysis tool that you can use directly from the browser. Its output gives you all the technical information about your code and its metrics, and reports back any errors like missing variables and definitions whilst highlighting them in your code. Developers and engineers from companies like Wikipedia, Mozilla, RedHat and jQuery are all using JSHint to ensure the highest code quality.


Source Code Analysis Tools for Security Reliability Klocwork

Klocwork is known to become a part of your development environment, rather than just an external tool that can be used for static code analysis. It will natively integrate with IDE’s like Microsofts Visual Studio, Eclipse, and IntelliJ IDEA. This gives you all the features and options of the actual Klocwork platform within your IDE. These features include automatic security scan of your code, static code analysis in real-time, refactoring of code to ensure its structure, a metrics and reporting feature to analyze team performance, visual code architecture to better understand the end result of your projects, as well as an option to have your code reviewed for additional insight and further understanding.


JSLint  The JavaScript Code Quality Tool

JSLint helps programmers express themselves in a creative way without having to lose the quality of code due to following bad style guidelines, or otherwise tampering the code with bad quality syntax. Use the feature settings panel at the bottom of the page to assume different coding environments. You can also select the kind of possible style errors to tolerate. Thus, you can maximize the effectiveness of your code optimization. Strictly for JavaScript developers only.


Software Testing and Static Analysis Tools Coverity

Coverity is a recognized name across the largest brands on the planet; Samsung, Sega and many other well-known names use Coverity to analyze and optimize code and software quality. The Coverity’s code quite suite offers a range of tools that allow to scan software source code for errors that could potentially cause permanent harm to the company. It will scan for strange behavior, potential security risks, or all-in-all risks that could cause software to fail. This is a private company that has more than two hundred employees in three different continents.

jsLint Online JavaScript Code Quality Tool

Yes, there are two code quality tools on this list with the same exact name; though both offer a range of different features. This particular JSLint takes your JavaScript source code and scans it for potential errors. If it finds any problem or issue, it will automatically output a concise error message. Said message will explain what the cause of the error is, and where it is located. Most of JavaScript errors are related to syntax. Although, there are cases when style and structure come into play as well. This JSLint recognizes those problems and help you solve them.

Code Climate

Code Climate. Hosted static analysis for Ruby PHP and JavaScript source code.

Code Climate is a self-hosted code quality platform that helps you to test your code for test coverage, complexity, duplication, security, style, and more. You have the option to use it within the cloud for a monthly fee. It also works with GitHub. Every time you push a new commit, Code Climate will fetch and analyze it. Then, it will report back to you with potential fixes on your errors. Overall, it’s the perfect compliment towards a good and productive development environment; for individuals and teams.


Pylint code analysis for Python

Python developers need to lint their code as well. That is why Pylint has been established. Pylint helps you analyze your Python scripts directly from within the command shell. Just load it up and specify the file that you want to check; Pylint will output all the essential information about your code.


Codacy Automated Code Review

The last code quality tool on our list is Codacy. It is a free-to-use tool that automatically checks your code for common errors and problems. The reports come back in a stylish dashboard-like environment.

Alex Ivanovs

Alex is a freelance writer with more than 10 years of experience in design, development, and small business. His work has been featured in publications like Entrepreneur, Huffington Post, TheNextWeb, and others. You can find his personal writing at The Divine Indigo.

This Post Has One Comment
  1. God Farther says:

    I like the article, have been using SoanrQube in our java projects.

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