Best Web Development Company – Excellis IT

Have you been running a business for a long time but haven’t yet gone online? Do you wish to advance your company's success to the next level? Do you want to start from scratch or redesign an existing site? Regardless of the sector or business in which you want your website to be built, Excellis IT's skilled web developers and designers will produce web solutions that will exceed your expectations in terms of performance and usability.

Through We are a prominent web design and development company in Kolkata, India that can assist you in defining your brand and increasing demand for your products and services through a customer-centric and data-driven strategy that recognizes the value of having an engaging website in today's digital environment, and we make sure to combine all digital marketing services such as SEO, PPC, content marketing, and more to achieve exceptional results.

Services We Offer

Frontend Development

To create a beautiful and intuitive frontend for your web app, we take into account your target audience analysis, brand identity, and industry best practices. Our designers and developers ensure that the entire web application and website design has a uniform user experience. We also include stunning animations and effects that will not degrade the performance of your online app and website.

Backend Development

The core of your web application is built by our engineers to be stable and secure. Your company's future growth is supported by the solid architecture. Our backends are adaptable enough to work with third-party systems and services. Our innovative data architectures also deliver meaningful business insights.

E-Commerce and CMS Development

Custom ecommerce and CMS development services can help your online business grow. We design, migrate and manage ecommerce storefronts. Furthermore, we offer everything from bespoke content management modules and CMS capability extensions to full-stack CMS solutions.

ERP Solutions

Our skilled programmers will build a robust ERP system from the ground up or enhance your existing systems with specific connectors. As per your requirements, we provide custom solutions, migration, implementation, extension and plugin creation, and so on.

SaaS Development

We provide end-to-end SaaS-based solutions, from initial consultancy through final delivery, maintenance, and implementation. Enterprise or business software, systems software, embedded software, control systems software, and many other types of software are available.

Testing and QA

We test your web app throughout the SDLC (Software Development Life Cycle) and after it has been released, focusing on the functional scope, performance, usability, security, and other critical elements.

Cloud Migration

We can migrate your current web app from an on-premise to a cloud environment, as well as overhaul the architecture, UX/UI, and feature set of the old web app to meet the new arrangement.

Legacy Modernization

We modernize your website and web app's architecture, rewrite its source code, migrate it to more capable environments, add new features, and update an out-of-date UX/UI.

UI/UX design

To establish a distinct online presence, our UI/UX design team improves the intuitiveness of your product interfaces. We offer engaging UI/UX that is both creative and functional.

Custom Web Application Development

We provide custom online solutions that are tailored to your specific company needs, utilizing tried-and-true approaches.

REST APIs development

REST API development services to fulfill the most pressing needs while adhering to industry best practices creating scalable, dependable APIs.

Experts in the Opensource Framework

End-to-end open-source development services with CMS and eCommerce platform skills to give you a competitive edge.

Web Apps that are Progressive

Build high-performance, secure applications that operate across with progressive web app development and design services across all platforms.

To transform the way the rest of the world sees you on the internet!

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Why Hire web developers from us?

Expert Certified Developer

We have skilled and accredited website developers in PHP, WordPress, and Laravel, to name a few platforms. Our team uses the most up-to-date technologies to create a highly secure website and web applications that meet your specific business requirements.

Regular Communication

Our team of Website developers are fluent in English and work in Australia, Canada, UK, USA time zone, allowing for regular communication. Over email, Skype, or Zoom, we keep you up to date on project progress regularly. Our firm is open 24 hours a day, 7 days a week, depending on the client's location.

100% Money-Back Guarantee

Our finest web development company in Kolkata, India guarantees a complete refund if the client is unhappy with the project's progress or the final output. We make certain that each client is completely delighted with our services.

Non-Disclosure Agreement

Our agency can sign an NDA (Non-Disclosure Agreement) and never share any critical project information with third parties without the client's permission. Our development team keeps all your data safe.

Timely Project Delivery

Our Website Development Company in Kolkata, India guarantees that the project will be delivered on time and in perfect condition. We never scrimp on coding standards and always stick to the agreed-upon timelines and milestones.

Dedicated Project Manager

For each project, we appoint a dedicated project manager to guarantee that the project is correctly managed using management systems such as Zoho, Bitbucket, Trello, and Jira, to name a few that the project is completed successfully.


Our Expertise

User Interface (UI) Responsive

Our professional website developers ensure that our apps have a beautiful and seamless UI that is also responsive.


Our skilled developers construct Web applications with powerful analytics tools that make it simple to administer your application.


Our development team has a record of accomplishment in developing single-page applications (SPA).

APIS for Making Payments

We incorporate seamless and effective Payment APIs into the web apps and websites we develop, making online purchasing and selling easier.

Cross-Browser Apps

We also have experience developing cross-browser web apps, which can save you time and money.

APIs from elsewhere

Excellis IT is a well-known web development company based in Kolkata, India, with a proven record of accomplishment of developing effective external APIs.

Notifications and e-mails

We develop web applications with essential functionality like e-mail and notifications.


Experienced PHP developers create feature-rich, high-performance websites. Our team uses the greatest PHP frameworks available to make web development simple and entertaining so you can concentrate on growing your business.


It is a server-side application framework that allows you to create dynamic and scalable web pages. Just-in-time compilation, native optimization, and caching services are all used to their full potential by our developers. ASP.NET is capable of producing enterprise-class websites and web apps.


New HTML elements, behaviors, and properties for powerful online applications. We use CSS3 to bring the design to our clients' products by creating complex layouts with shadows, gradients, transitions, animation, and flexible grids. Additionally, we promote literate, stable coding that employs programming elements like actual variables, nesting blocks, and mix-ins (via CSS).


The most popular programming language for all-purpose website development. Java is utilized in a wide range of computing platforms, from embedded devices and mobile phones to enterprise servers and supercomputers, due to its superior scalability, stability, and consistent online technical assistance.


Industries WE served


We provide software for the healthcare industry that automates patient management, lab management, test result processing, and data collecting.


Implement manufacturing software to assist you in improving your current operations' efficiency while lowering your operating expenses.

Tour & Travel

Hire Excellis IT experts with extensive experience developing online and mobile solutions for the travel and tourism industry to meet all your unique requirements.

Ecommerce And Retail

We create retail and e-commerce software that automates company processes and improves the shopping experience for customers.


We create innovative logistics software to improve warehouse productivity and streamline the supply chain.

Our Process

    Requirement Gathering icon

    Getting to Know Your Clients' Goals

    To begin, we carefully and thoroughly listen to our client needs, ensuring that their questions are answered most efficiently and effectively possible so that we can move forward in the appropriate path.

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    Conceptualization and Planning

    We devise a tried-and-true strategy for streamlining and organizing your website development process. We understand the importance of achieving goals while also offering a great user experience.

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    Design and Develop

    We give the design to the client for inspection and input after we finish designing a platform. We will continue to look for new ways to improve our work until you are completely satisfied. The design will then be coded and produced based on what has been accepted.

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    We test the website on a variety of devices and utilize sophisticated techniques to ensure that it is responsive, user-friendly, and error-free according to W3C guidelines. If we discover a problem, we make the required adjustments to ensure that our projects are of high quality.

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    We advertise your website by deploying it to your server, where it will be accessible to you, your team, and users after we ensure that it is error-free. If you have any performance problems, we also provide maintenance and support.


    Benefits of Hiring Web Development Services


    Strategy and Planning

    The key to successful website development is planning and strategy. You get access to a team of website development specialists when you engage a website development business in Kolkata. They work on your project while keeping in mind your long- and short-term objectives, as well as the preferences and purchasing habits of your target audience.


    Another benefit of choosing a website development agency in Kolkata, India like Excellis IT is the time savings. As a reputable web development company, we make certain that all our projects are done on time and to the greatest possible standard.

    Trustworthy website

    There are responsive web design services available, and no matter how hard you try, you won't be able to rely on a strong website if you don't have the appropriate skills. It is critical to recognize that a fantastic website is better for company platforms, so you will have to put in a lot of time and money to find the ideal development services and development team.

    You get incredible designs.

    This is one of the most reliable guarantees of the best web development service, because employing standard templates or formats may only result in monotonous websites that look the same as everyone else's. The most notable benefit is that these providers keep the website's user-friendly layout while also allowing personalization in design.

    Loading time

    Any website built with little expertise will never be able to compete with a superb website equipped with all the necessary plugins and tools. Fortunately, experienced Website development services guarantee to supply you with all these characteristics, which will aid the development of your website. If you use the right technology for your platform, you will always end up with an above-average or great website that is not slowed down by lengthy loading windows.


    Working with a website development agency has numerous advantages, including timely completion, improved project management, and lower costs. You are completely incorrect if you believe that hiring a website development company in India will be expensive. It is always a more cost-effective solution than hiring a single in-house developer because you have access to a team of developers, designers, and marketing pros.

    For One Stop Web Solution Service Provider.

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    Our CLients

    Whatever may be your requirement - we have a solution for you.

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    Technologies & Tools

    Our solutions are based
    on the following technologies

    Angular logo


    Bootstrap logo


     Figma logo


     HTML logo

    HTML 5

     js logo


    photoshop logo


    React logo


    Vue logo


    XD logo

    Adobe XD

     php logo


     woocommerce logo


    drupal logo


    wordpress logo


    codeignator logo


    Shopify logo


    dotnet logo


    Magento logo


     android logo


     Apple logo


    flutter logo


    ionic logo


    Node logo

    Node js

    react logo


    Swift logo


     Mobile Testing logo

    Mobile Testing

     Manual Testing logo

    Manual Testing

    Asked Questions

    To start web development, you'll need data. It contains information about your target audience, demographics, major goals, business purpose, and general brand idea. It enables the developer to comprehend how to create your website in such a way that it appeals to your target audience. The study also enables the designer to envision what the buyer wants from your brand. To obtain repeat consumers and establish your brand in the market, you need to make a strong first impression.
    Customers frequently look at the screen while navigating through a website. As a result, it's critical to build your website so that customers can locate what they're seeking more easily. To create a website that isn't overly distracting, you'll need top-notch design and development expertise. In addition to this, brand rules must be followed so that customers feel at ease and are familiar with your website.
    The process of creating a website for your company on the internet or intranet is referred to as web development (in case you have a preference to run it on your private network). Web development, in simple terms, refers to the technical aspects of the website creation process, such as coding and mark-up writing. To create a website and other related web applications, web developers employ coding languages such as HTML, CSS, JavaScript, Python, and so on.
    The visual appearance of a website, as well as the functions that go with it, are all part of web design. It's more of a case of putting oneself in someone else's shoes to get a sense of what they're going through. Web development, on the other hand, is concerned with the usage of programming languages such as CSS, JavaScript, and Python to create a website. The tough work of a web designer and a developer is required to create a website that users want to visit again and again.
    We choose the most appropriate technology for your project based on its needs. There are several elements and parameters to consider, which is why we analyse and dive down to micro-levels to identify the best technology for your project. Scalability and maintainability, cost, security, time to market, application performance, database structure (relational/non-relational, graph database), ecosystem, and other factors are just a few of the factors we examine.