The 10 Best Software Development Companies in West Sussex - 2025 Reviews

Top Software Development Companies in West Sussex

Which one is the best for your company?

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Unlock the potential of your digital projects with West Sussex's leading software development companies. Our carefully selected roster showcases top-tier developers ready to bring your ideas to life. Explore each company's portfolio and client testimonials to find the perfect match for your project needs. From bespoke applications to enterprise solutions, these experts offer a wide range of services to fuel your business growth. Whether you're a startup or an established corporation, West Sussex's software development scene has the talent to elevate your digital presence. Post your project requirements on Sortlist, and let the region's finest developers reach out with tailored proposals that align with your vision and objectives.

Top Featured Software Development Companies

All Software Development Services in West Sussex

  • 4.9
    (11 reviews)

    TRIARE unlocks IT potential of YOUR business

    Recommended
    TRIARE is a WEB and MOBILE software development company based in Europe. We are delighted to offer our services as your long-term partner, taking all technical matters off your shoulders and allowing you to focus on your business development. YOU WILL GET: ✔ In-house team . Work with a dedicated team that is 100% focused on your product and located in the same office. ✔ Efficiency & transparency , as our process is based on Scrum methodology and managed by certified Scrum Masters. ✔ Fast result. Working with us, you will get the first result in 1 week. ✔ High quality, as TRIARE has well-established processes of software development and experienced specialists. ✔ Full cycle development . Our company covers all stages of development, handling everything from Discovery and prototyping to Design, development, and maintenance. ✔ IP rights . From the very beginning, you are the only owner of the intellectual property of your project materials: source code, design, documentation, etc. ✔ Warranty period will be provided for your system for free. ASPECTS OF OUR MINDSET: - Focused on results. We are focused on the result of your business with an understanding of the real goals and KPIs that our team should achieve. - Solution Provider. It means that we always come to you with solutions, not with questions. We take all technical aspects of the project off your shoulders, allowing you to focus on the marketing and business strategies. - We go the extra mile. Being a proactive company, we always think and take a step ahead. TECHNOLOGIES WE USE: - Mobile app development: Kotlin, Java, Swift, Objective-C. - Cross-platform development: Flutter, React Native. - Web frameworks: Node.JS, React.JS, PHP, Ruby on Rails.
    5 works in Software Development
    Located in Greater London, United Kingdom (+3)
    From €25,000 for Software Development
    Worked in Energy & Oil (+18)
    Speaks English, Ukrainian
    51-200 members
  • 5
    (6 reviews)

    We build bespoke web and mobile solutions that fit your organisation perfectly.

    We build bespoke online products and mobile apps to help your business grow. We make it our business to understand yours. We're small, friendly and based in Cambridge, UK. Got an idea we can help deliver? A challenge you need help solving? You've just found your team.
    Looking for work in Software Development
    Located in Hardwick, United Kingdom
    Budget on request
    Worked in Music (+8)
    Speaks English
    1-10 members
  • 5
    (6 reviews)

    An agency that combines the limitless creativity of art with the functionality of engineering.

    Highly recommended
    Epigra (ɛpɪɡrɑ) is derived from the Latin word "epigram", which means "a brief, interesting, memorable , and sometimes surprising statement ". Since 2009, we work as a team to create the best possible digital experiences for our clients and their customers by passionately believing, designing , developing and inspiring the values reflected by our brand identity. NOT JUST AN AGENCY... We're a multi-disciplinary team that wants to understand your business needs and deliver good results beyond your expectations. We believe in making progress , being creative and achieving significant outcomes through technology. We invest our nows and futures as today's innovations are tomorrow's standards and step by step we're getting closer to our goals. We identify and follow trends and technologies which can have an impact on our clients. We inspire through our obsession with quality and craftsmanship. We believe in aiming high when solving meaningful problems which will have a positive impact and we live in constant development to create value. For us, the future is built at the intersection of passion and great technology.
    9 works in Software Development
    Located in London, United Kingdom (+1)
    From €5,000 for Software Development
    Worked in Government & Administration (+10)
    Speaks English, Turkish
    11-50 members
  • 4.9
    (7 reviews)

    AnvilEight provides web & mobile development for end-to-end product development with Python & Django

    Top awarded
    AnvilEight is a leading IT outsourcing Python & Django development company that specializes in using Python programming language and Django framework for web development. With a team of highly skilled developers and designers, AnvilEight provides comprehensive IT solutions that meet the unique needs of each client. The company has a proven track record of delivering top-notch web applications that are scalable, reliable, and secure.
    7 works in Software Development
    Located in Greater London, United Kingdom (+1)
    From €10,000 for Software Development
    Worked in Education (+9)
    Speaks English, Russian(+1)
    51-200 members
  • 5
    (1 review)

    We help businesses like you thrive online using our custom digital solutions.

    We specialise in app and web development , software solutions , and digital content creation. We work with well-known brands such as Hornby Hobbies and Tarmac as well as celebrities including Jim Moir , and small and medium-sized local businesses. Our clients like the fact that we are responsive, easy to work with, and completely focused on delivering results that make a difference. Web & Mobile App Development – Creating visually stunning websites and building robust, intuitive mobile applications. Custom Digital Platforms – Tailored development of CMS and platforms, including e-commerce solutions (WooCommerce, Shopify, Squarespace). Digital Marketing & SEO – Enhancing online visibility through targeted campaigns across social media, email, web, and search engines. E-learning & CPD Solutions – Development and conversion of CPD and e-learning into online solutions. Content Creation – High-quality image, photography, and video production to support your digital strategy.
    5 works in Software Development
    Located in Kent, United Kingdom
    From €1,000 for Software Development
    Worked in Toys (+3)
    Speaks English
    1-10 members
  • (0 review)

    Connecting your business applications to work smarter together.

    Create a more powerful business system by connecting your applications to work together seamlessly, passing data and files interchangeably to enhance every aspect of your operations. We Can Connect Your Favourite Applications Nearly any application can be connected—whether it’s CRMs, accounting software, project management tools, social media platforms, or more. We’ll help you integrate the tools you rely on to create a seamless workflow tailored to your business.
    Looking for work in Software Development
    Located in West Sussex, United Kingdom
    From €1,000 for Software Development
    Works in multiple industries
    Speaks English
    1-10 members
  • 5
    (1 review)

    Bespoke Software, Mobile Apps, & Web Solutions – Empowering Your Business with Expert Innovation

    Winderon Software Solutions Ltd specializes in bespoke software development , crafting fully customized, scalable solutions designed to grow with your business. We don’t use off-the-shelf templates—every line of code is written specifically for your unique requirements, ensuring long-term success and adaptability as your business evolves. Services: Custom Software Development: Tailored software solutions that fit your business perfectly and adapt as you grow. Mobile App Development : Build high-performance, feature-rich apps for iOS and Android, tailored to your specific needs. Web Development : Scalable, secure, and robust web solutions that grow with your business and boost your digital presence. UX Design : User-centered design, enhancing engagement and ensuring that your custom solutions are intuitive and effective. Our Approach: We believe in long-term partnerships. Our bespoke development services come with continuous support, updates, and a commitment to evolve your software to meet new business challenges. Technologies We Use: We leverage cutting-edge technologies to build robust, scalable solutions: Front-end : React.js, Angular, Vue.js Back-end : .NET, Node.js, Spring Mobile Development : React Native, Flutter, Swift, Kotlin Databases : MongoDB, MySQL, PostgreSQL, MSSQL, ElasticSearch Cloud Services : Azure, AWS, Google Cloud Why Choose Us? Tailored to You: No two businesses are alike, which is why our solutions are built from scratch, designed with your needs at the center. Long-term Value: We build for the future, ensuring that our solutions are scalable and adapt as your business grows. Cutting-Edge Technology: Our team uses advanced technologies like .NET, React.js, and AWS to deliver high-performance solutions. Partner With Us for Long-Term Success: Our bespoke approach ensures that you get a solution tailored to your business today and evolves with you over time. Contact us for a free consultation at [email protected] and let's explore how we can help drive your business forward.
    1 work in Software Development
    Located in Greater London, United Kingdom
    From €3,000 for Software Development
    Worked in Hospitals & Healthcare
    Speaks English, French
    1-10 members
  • 5
    (6 reviews)

    High-impact digital products. Thoughtfully crafted solutions driven by data and creativity.

    Pixie Labs is a leading London-based digital product studio. We partner with ambitious organisations to design and build high-impact apps, platforms and digital tools. Whether you're at the ideation stage, need help with user-centric design, are ready to build a rock-solid platform or app, or want to improve an existing product - we can help. We'll partner with you to deliver a unique solution to achieve your unique business goals.
    7 works in Software Development
    Located in London, United Kingdom
    From €10,000 for Software Development
    Worked in Government & Administration (+6)
    Speaks English
    1-10 members
  • 5
    (11 reviews)

    Сreating unique products to give others a chance to live out the best experience.

    Highly recommended
    Top awarded
    We’re an expert design & development team, turning product usage into the best experience. We dive deep into every project, exploring it from three angles: business ideas, design thinking, and technology. This is how ambitious 💡 ideas turn into 🚀 successful products. We're experienced in various industries but always up for new 💪 challenges. Check out the domains we've worked with: FinTech, EdTech, eSports, SaaS, and Mental Health. Got something new to add? Let’s create the best digital experience for your business together! 📩 [email protected]
    5 works in Software Development
    Located in Greater London, United Kingdom (+1)
    From €20,000 for Software Development
    Worked in Software & Computer Services (+6)
    Speaks English, Ukrainian
    11-50 members
  • 4.7
    (9 reviews)

    Take the software path to your digital future

    Highly recommended
    Top awarded
    Andersen is a leading software development company with a strong focus on technology-intensive industries. Since its founding in 2007, the company has opened 16+ development centers in the USA and Western Europe. For over 16 years we have been helping enterprises around the world to transform business by creating effective digital solutions with the use of innovative technologies. Andersen has completed over 1000 projects in each industry and received hundreds of positive reviews from customers. Today, the company is working on over 250 global projects. Andersen has a rich front-end, back-end, and mobile stack. 90% of recurring customers mention that Andersen's advantages are fast delivery, ongoing support, and accessible prices. Most of our developers have 10+ years of experience and have successfully delivered many projects. 3500+ qualified experts are ready to implement your idea into the real world. 2024 is going to be a year of digital transformation for all industries. Stay on top of your performance with our IT talent!
    16 works in Software Development
    Located in Greater London, United Kingdom (+8)
    From €10,000 for Software Development
    Worked in Hospitals & Healthcare (+24)
    Speaks English, Arabic(+2)
    1001-5000 members
  • (0 review)

    Empowering businesses via Digital / Web & AI Solutions

    Knarkz Solutions is a UK-based Mobile / Web Application Development Company Our software development services have been designed to address the needs of businesses across various verticals. We offer a complete range of solutions that are customised based on your business requirements and objectives. Whether you are looking for an innovative mobile or web application, we can help! ​We know that it can be hard to get started with building an app. That’s why we offer a free consultation service where we will walk you through every step of the process, from concept to completion. No hidden fees or surprises! Our team of experts is ready to work with you on your next project, no matter how big or small it may be. With our expert design and development skill set combined with our consulting services, there isn’t anything that we can’t do when it comes to mobile and web apps. Our team consists of experts who specialise in different areas like native and hybrid mobile apps, as well as full-stack developers. If you’re looking for a complete solution, then we can help! We take pride in building long-lasting relationships with our clients through quality work and unmatched customer service. Our team includes industry experts who are always ready to provide you with the best solutions at affordable prices. With us by your side, there is no limit on how far you can go!
    1 work in Software Development
    Located in Failsworth, United Kingdom (+1)
    From €30,000 for Software Development
    Worked in Software & Computer Services (+3)
    Speaks English
    11-50 members
  • 5
    (2 reviews)

    Believe.IT

    Recommended
    We are a leading Web 3.0 Development Company in UK. We offer Web 3.0 Development services and Solutions to startups, SMEs and large enterprises.
    3 works in Software Development
    Located in Greater London, United Kingdom
    From €1,000 for Software Development
    Worked in Software & Computer Services (+1)
    Speaks English
    201-500 members
  • (0 review)

    Taking your idea to the next level.

    We create immersive brand experiences and innovative solutions through bespoke software, web, and app development, designed for today’s influential businesses and tomorrow’s visionary leaders.
    5 works in Software Development
    Located in Greater London, United Kingdom
    From €3,000 for Software Development
    Worked in Transportation (+3)
    Speaks English
    1-10 members
  • 5
    (3 reviews)

    Best Mobile App Development Agency in the UK

    Top awarded
    At Evangelist Apps, we're not just app developers; we're pioneers in crafting mobile solutions. Our ethos revolves around guiding clients with innovative solutions and industry best practices in specialized app development. Our journey in app development is marked by adherence to stringent quality standards and a commitment to delivering cost-effective, efficient, and high-quality solutions. Our portfolio boasts a diverse range of apps, each showcasing our ability to handle complex challenges with ease. We stand out as a dynamic app development company, boasting a skilled team and an impressive global client roster, including British Airways, BBC, UBS, KLM Airlines, Hastens, Virgin Money, News International, Channel 4, and BMJ. Our offshore development model not only ensures cost-effective solutions but also guarantees superior software quality. Why Us Over 2 decades of specialized expertise. A robust app development team. Cost-effective solutions without compromising quality. Agile methodology ensuring regular updates and builds. Comprehensive end-to-end project delivery. Our Expertise Proficient in developing apps across all platforms: Native iOS, Android and Cross Platform (React Native and Flutter) Develop user centric UX/UI designs Utilizing the latest app development toolkit and best practices. Dedicated to quality with specialized teams for testing, configuration management, and project management.
    Looking for work in Software Development
    Located in Hampshire, United Kingdom
    From €10,000 for Software Development
    Worked in Banking & Financials (+2)
    Speaks English
    11-50 members
  • (0 review)

    Scientific Software Specialists

    Creators of quality bespoke software for many platforms, ranging from embedded microcontroller firmware, single board computers, Android App development, Desktop utility packages through to multi-processor server solutions. Always ready to take on challenging requirements particularly for the science, research and engineering industries with a 30+ year track record of delivering quality software that exceeds expectations.
    Looking for work in Software Development
    Located in Hampshire, United Kingdom
    From €1,000 for Software Development
    Works in multiple industries
    Speaks English
    1-10 members
  • 4.5
    (2 reviews)

    We create digital experiences for brands that aim to make a difference

    We are Eonic Digital – trusted experts who work with brands to bring clarity to their vision and develop strategic thinking to innovate online. Our team help leaders understand how to develop online to better engage with their audience, transact more business and gain more sales. We challenge convention and disrupt the norm, driving forward digital transformations to deliver maximum impact. It starts with a conversation.
    1 work in Software Development
    Located in Brighton, United Kingdom
    From €1,000 for Software Development
    Worked in Non-profit
    Speaks English
    1-10 members
  • (0 review)

    Bespoke software development from the UK

    We’re a bespoke software development company offering custom software solutions to help your business thrive. Let us bring your bright ideas to life.
    Looking for work in Software Development
    Located in Hove, United Kingdom
    From €1,000 for Software Development
    Works in multiple industries
    Speaks English
    11-50 members
  • Ballard Chalmers: Engineers for enterprise apps on the Microsoft Platform: .NET & Azure Cloud, SQL Server, SharePoint, BizTalk Server.
    Looking for work in Software Development
    Located in East Grinstead, United Kingdom
    From €1,000 for Software Development
    Works in multiple industries
    Speaks English
    1-10 members
  • Previous Next YOUR CUSTOM SOFTWARE DEVELOPMENT PARTNER STRIDES EMPOWER ARE A FULL SERVICE DEVELOPMENT TEAM.  We are a web and application development company that turns your ideas into a powerful driving force of your business. We onboard technical experts to deliver projects on time and maintain professional code standards. [ wHEN WORKING WITH A SOFTWARE […]
    Looking for work in Software Development
    Located in Worthing, United Kingdom
    From €1,000 for Software Development
    Works in multiple industries
    Speaks English
    1-10 members
  • 5
    (2 reviews)

    Postjer transform your data, people and organization.

    Postjer Agency is a software development subsidiary. Our expertise lies in web design, web development, eCommerce, CRM system development, logistics, IT support and any custom solutions to align with client's needs and requirements. We managed to offer our services to customers from Albania, Austria, Germany, and UK. However, it is only the beginning of our journey as we strive to expand the markets we serve, helping more and more companies from diversified industry verticals. Thanks to our deep expertise in eCommerce, CRM, ERP, and B2B automation projects, our team possesses the exclusive skills and experience to create solutions of any type and complexity. That is why we know the nuances and master the tools of eCommerce. It sets us apart from the competition, and in turn, gives you the following advantages: obtaining an effective resource with an attractive interface and decent functionality; convenient and affordable site management; easy-to-use navigation of the commercial platform; the best implementation of your ideas thanks to our huge experience in trade and analytics; competent placement of important information on the main page that encourages consumers to take active action; Our broader set of expertise: UI/UX Research and Design Smart MVP planning, Vision understanding, Concepting, Competitor analyses, Hypothesis validation Open Source eCommerce (Magento 2, OpenCart, WooCommerce) Hosted Ecommerce (Shopify, BigCommerce) SAAS platform development Marketplace development (Open Source, Custom, and Hosted solutions) Laravel based custom platform developments Vue.js, Nuxt-based custom projects AWS, System Administration, DevOps Hosted CMS platforms: Wix, Squarespace Projects management; We are proud of the following: the creation of functional tools that brings a high conversion of online stores; development of projects with corporate identity, attractive design, and convenient usability; deep analysis and accuracy of determining the target audience and its needs; establishing productive communication between businesses and end-users through proven techniques in the field of web design.
    3 works in Software Development
    Located in Greater London, United Kingdom (+1)
    From €10,000 for Software Development
    Worked in Automotive (+4)
    Speaks English, Albanian(+1)
    11-50 members
12

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