All Web App Development Companies in Hertfordshire
TRIARE
4.9(11 reviews)TRIARE unlocks IT potential of YOUR business
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.19 works in Web ApplicationLocated in Cherkasy, Ukraine (+3)From €10,000 for Web ApplicationWorked in Hospitals & Healthcare (+20)Speaks English, Ukrainian51-200 membersBullshark
4.7(14 reviews)We build the end-to-end; Marketing, Technical and operational infrastructure organisations run on.
Most companies do not have a technology problem. They have a systems problem. Organisations accumulate tools. A CRM here. Analytics there. Finance systems, operational software, marketing platforms. Each solves a problem. Together they create complexity. Data fragments. Reporting slows. Revenue leaks. Bullshark is a technology company that designs, builds, integrates, and operates the systems organisations need to scale. Software, cloud, data, AI, operations, digital platforms, and revenue connected into one operating environment. That is end-to-end business infrastructure. WHAT WE BUILD Strategy and Design. Transformation strategy, AI adoption, operational optimisation, systems architecture, brand and positioning. Technology and Infrastructure. Custom software engineering, enterprise applications, B2B sales infrastructure, legacy modernisation, DevOps and cloud, systems integration. Data and AI. Data architecture and engineering, migration, business intelligence, AI automation, machine learning. Digital Platforms. Web and mobile applications, SaaS products, e-commerce, websites, UX and UI design. Revenue Growth. Outsourced Marketing Department, performance marketing, content, CRM, marketing automation, revenue intelligence. PROOF 200+ organisations supported EUR 100M+ in client revenue powered by Bullshark systems 150+ platforms and systems delivered 75M+ user sessions handled annually 30+ systems integrated across ERP, CRM, and finance 95% client retention, 2023 to 2025 26.3X ROAS through search-led acquisition 40% revenue recovered through automated billing ISO 9001 and ISO 27001 certified Trusted by Wolt, Hyatt, Pfizer, Melita, APS Bank, Marriott, Farsons, Transport Malta, and the Government of Malta. Headquartered in Malta. Office in London. Clients across Europe, the UK, MENA, and North America. Tell us what is breaking. We will map the system behind it. Bullshark.Digital2 works in Web ApplicationLocated in Birkirkara, Malta (+1)From €5,000 for Web ApplicationWorked in Industrial Goods & Services (+5)Speaks English, Italian(+1)11-50 membersCab Engine | Digital Agency
4.9(5 reviews)We specialise in building high-performance teams to power your entire marketing engine.
RecommendedA trusted UK agency of 20 years, our unique partnership model has been the foundation for our client's success. Working with brands all over the world, our dedicated digital teams have driven significant results for our clients tech platforms and performance marketing.4 works in Web ApplicationLocated in Warwickshire, United KingdomFrom €30,000 for Web ApplicationWorked in Others (+8)Speaks English11-50 membersU1CORE
5(17 reviews)U1CORE — A product studio for multi-sided platforms. Marketplaces, exchanges, auctions, fundraising
Highly recommendedTop awardedYOUR PARTNER TO BUILD MULTI-SIDED PLATFORMS $720M moved through one platform we built. Millions of live listings on another. 300+ products shipped. 🔔 Book a free call: https://calendly.com/hello-u1core/30min 🌐 https://www.u1core.com/ What you get We do: the full platform. Multi-role flows, payments, trust & safety, admin tooling, infrastructure that holds at peak load. You get: a product decision-makers trust on first impression, and users who move through it without friction. So you can: grow revenue, close your round, automate operations, and charge a premium. Services Product Design: UI/UX, design systems, prototyping, platform-native patterns for marketplaces, auctions, exchanges, donation flows. Product Engineering: React, Next.js, Vue; Node.js, Python, .NET; mobile, payments, multi-role architecture, admin tooling, DevOps. Discovery & Strategy: cold-start strategy, trust & safety, take-rate modeling, MVP scoping, UX audits. Custom Development: marketing sites and landing pages for platform companies. Why founders pick us One lane. Marketplaces, exchanges, auctions, donation platforms. We already know how products in your category delivered. We lead. We arrive with a point of view, flag what won't work, and explain why. One team, kickoff to launch. The product you ship is the product we built. Twice the pace. Six weeks where others quote three months. $720M+ processed. CSS Design Awards (2× Site of the Day, 4× Best UX, 4× Best UI, 4× Best Innovation, 4× Special Kudos), Orpetron, TOP 10 on Dribbble. 300+ clients, and the ones who matter come back. If your product only works when two sides of a market trust it at the same moment, that's our entire job. Let's talk.1 work in Web ApplicationLocated in London, United KingdomFrom €10,000 for Web ApplicationWorked in Banking & Financials (+16)Speaks English11-50 membersInstinctools
5(10 reviews)Your AI-powered Engineering Partner
Top awardedMeet *instinctools - a global AI-powered software engineering company with over 25 years of experience. We help both SMBs and Enterprises build robust, scalable software solutions that excel in functionality and design. Our core services include: Agentic AI enablement Custom software development enhanced by deep AI expertise Digital product engineering Business process automation Legacy system modernization Advanced data analytics and visualization Cloud infrastructure and DevSecOps Headquartered in the USA (Maryland) and Europe (Germany), *instinctools offers convenient locations for meeting and collaborating directly with our clients. We have development centers in Poland, LATAM, India, and Kazakhstan that combine global expertise with a strong price-quality balance to ensure exceptional results across time zones. Our work is backed by ISO-certified quality standards, strategic partnerships with leading tech platform, and a long-standing commitment to engineering excellence. Instinctools holds a broad portfolio of regional and industry-specific certifications, including CIR, HIPAA, and other compliance frameworks required for regulated markets. The 2025 Annual Customer Satisfaction Index is 9.1 out of 10.3 works in Web ApplicationLocated in Potomac, United States (+4)From €10,000 for Web ApplicationWorked in Construction (+10)Speaks English, German(+1)201-500 membersAGCS Works
4.8(36 reviews)Marketing - Design - Social Media - Video Production
RecommendedTop awardedWe are an award-winning international digital agency born in Amsterdam. Our key areas of focus are: - Marketing and Marketing Strategy - Social Media - Design and Digital Design - Video Production and Editing - Web Development - Branding and visual identity - Digital design - HTML5 coding and Banners We have worked with clients including Yamaha, Universal Pictures, Ubisoft, Qatar Airways, and Samsonite, as well as top creative agencies across Europe and United States. Our team of designers, video editors and web development specialists helps brands and creative agencies execute flawless design and digital production projects.10 works in Web ApplicationLocated in Amsterdam, Netherlands (+1)From €1,000 for Web ApplicationWorked in Media (+16)Speaks English11-50 membersGRM Digital
5(5 reviews)Digital marketing and technology that drives measurable growth.
Top awardedGRM Digital is an award-winning digital agency helping ambitious businesses generate sustainable growth through SEO, paid media, content, digital strategy and technology. Since 2009, we've worked with organisations to improve their digital visibility, attract the right audiences and turn digital activity into measurable commercial results. Our marketing capabilities include SEO, PPC and paid search, content strategy and creation, digital PR and authority building, analytics, conversion optimisation and wider digital marketing strategy. We don't treat these channels in isolation. Our teams combine marketing expertise with UX, data, design and technology to understand the complete customer journey, from how prospects discover your business through to how they engage, convert and become customers. For organisations looking for an ongoing digital marketing partner, we develop integrated strategies based around clear commercial objectives. This includes understanding your market and competitors, identifying growth opportunities, building the right channel strategy and continuously measuring and improving performance. Unlike agencies focused purely on marketing activation, GRM also has extensive technical expertise across websites, CMS, eCommerce and digital platforms. This allows us to identify and solve the technical, UX and performance issues that can limit marketing results. Whether you need to increase organic visibility, improve paid search performance, create better content, generate more qualified enquiries or build a long-term digital growth strategy, GRM provides the strategy, expertise and ongoing optimisation needed to deliver measurable growth.3 works in Web ApplicationLocated in West Yorkshire, United Kingdom (+4)From €20,000 for Web ApplicationWorked in Education (+6)Speaks English, Croatian(+2)11-50 membersCranberry Marketing
5(5 reviews)Your Growth Partner in 2026
Cranberry Marketing is a full-service digital marketing agency based in Hertfordshire, UK, with 15+ years of experience helping businesses grow online. We work with SMEs and ambitious brands across the UK, USA, Saudi Arabia, and Pakistan. Everything we do is built around three pillars: Clarity, Visibility, and Growth . Build your foundation first. Get found everywhere second. Then convert that visibility into revenue. That's the journey we take every client on. Our services cover SEO, Google Ads, Paid Social, Web Design (WordPress & Shopify), Content Marketing, Email Marketing, CRO, Funnel Optimisation, Lead Generation, Amazon Agency Services, Brand Identity, and AI Visibility / Generative Engine Optimisation (GEO). We're one of the few UK agencies offering GEO — optimising your business to appear when people search on ChatGPT, Gemini, and Perplexity, not just Google. Our results speak plainly. Moroccan Garden (Ilford, London) saw a 76% increase in organic traffic in 3 months and 464% more users in a year. Dunk Burgerz (Luton) ranked #1 on Google for their target keywords with a 276% increase in organic views and 252% more users. Every new client starts with a free audit — either a personalised bespoke review or our instant 8-category automated tool checking SEO, speed, backlinks, GMB health, and AI Visibility in under 60 seconds. We respond within one business day. No hard sell. No fluff. Just honest strategy and measurable results. 📍 Bushey, Hertfordshire, UK 🌐 cranberrymktg.co.uk2 works in Web ApplicationLocated in Hertfordshire, United KingdomBudget on requestWorked in Others (+8)Speaks English1-10 membersDuck.design
4.7(29 reviews)You need design done. Just get it!
Highly recommendedTop awardedYour brand designs are too important to be left in the hands of unreliable freelancers or expensive creative agencies. Why not hire an experienced, full-time designer who knows you by name and your brand by heart? Since its creation, Duck.design has been able to capitalize on a number of areas that currently constitute its strength: - Logo, Brand Guide, Style Guide; - Graphic Design; - Web Design; - UI/UX Prototyping; - 3D Design; - Game design; - Explainer Video, 2D Animation, GIF.Looking for work in Web ApplicationLocated in Greater London, United KingdomBudget on requestWorked in Banking & Financials (+8)Speaks English51-200 membersDreamzTech Solutions
5(30 reviews)AI and Custom Software Development for Enterprise Transformation
Highly recommendedDreamzTech is a US-led AI and custom software development company with 250+ engineers and delivery operations across the United States, United Kingdom, India and South Africa. We build enterprise AI solutions, Agentic AI systems, custom software, data platforms, mobile applications, IoT solutions and connected operational systems for organizations worldwide. Our teams combine local project leadership with global engineering delivery to help clients launch faster, modernize legacy systems and reduce development costs. DreamzTech is trusted by organizations including DHL, Nestlé Purina, AB InBev, Close Brothers Brewery Rentals, Stanford University and Golden Entertainment.6 works in Web ApplicationLocated in Watford, United KingdomFrom €1,000 for Web ApplicationWorked in Travel & Leisure (+4)Speaks English201-500 membersSWC Partnership - part of the global UP Group
4.9(17 reviews)The local agency with a global reach.
Top awarded🇬🇧 Welcome to SWC Partnership. We develop marketing strategies and campaigns to accelerate your sales and brand awareness . SWC is a full service marketing agency that works as an extension of your team . We deliver brand strategy , integrated marketing plans , creative concepts , creative production , transcreation, media planning/buying and campaign reporting . Our services are designed to be integrated into your existing infrastructure, either as a full service partner or for a specific discipline. Our expert teams are highly experienced in working across both B2B and B2C industries; whilst delivering international , national and local marketing solutions. We’re passionate about making a commercial difference to our clients and provide measurable and accountable marketing that drives ROI . We are headquartered in the UK and operate across Europe, with a special focus on the DACH region. We are an agile team of specialists and part of UP, THERE EVERYWHERE , the first global cloud based agency . Headquartered in Stockholm, Sweden , with a further 15 bases including Hamburg , Helsinki , London , New York , Dubai , Shanghai , Switzerland , Amsterdam and Palma among others. We offer a global agency solution whilst connecting you with teams locally . Providing local insight and appreciation of country nuances, we can plan, produce and deliver your international marketing programmes in each of your targeted countries and territories, as if you would in your home market. Through multilingual marketing managers and transcreation experts , we ensure your international sales & marketing is a success . Visit our website to find out more and contact us to discuss your requirements. www.swcpartnership.com Specialist petcare marketing: petcare.swcpartnership.com Specialist tech/manufacturing marketing: tech.swcpartnership.comLooking for work in Web ApplicationLocated in Greater London, United Kingdom (+5)Budget on requestWorked in Technology Hardware & Equipment (+14)Speaks English, Chinese(+8)11-50 membersTechGropse Pvt. Ltd.
4.9(108 reviews)Next-Gen Apps for Next-Gen User
Highly recommendedTechGropse is a leading mobile app development company headquartered in Dubai with a prominent global presence in the UAE, USA & India. Established in 2015, we transform innovative ideas into reality, becoming a go-to name for businesses seeking stunning, high-performance mobile applications. Vision and Mission We help businesses grow by developing stunning mobile apps that users love. Our mission is to deliver high-quality, personalized solutions that meet the unique needs of every global client as a dedicated partner in your success. What We Do & Strategic Services TechGropse offers end-to-end services to meet all your digital transformation needs: Custom Mobile App & Software Development Expert UI/UX Design & Prototyping Cross-Platform & Native App Development Maintenance and Support AI Chatbot Development Machine Learning & AI Implementation (Agentic AI) Advanced Cloud Computing & DevOps Innovative IoT Development Industry Expertise We excel in developing apps for: Healthcare, FinTech, Logistics, Construction, Retail, Ecommerce, Energy, Insurance, Travel, Electric Vehicles (EV), and Real Estate. Why Partner With Us Using a stack like React, Node.js, Python, and Flutter, our client-focused team is committed to quality, timely delivery, and affordable pricing. We build long-term relationships through collaboration. Connect With Our Global Offices: USA Office: +1 267 327 4760 Dubai HQ: +971 527 984 766 Email: [email protected] Visit: https://www.techgropse.com/contact3 works in Web ApplicationLocated in Dubai, United Arab Emirates (+2)From €3,000 for Web ApplicationWorked in Clothing & Accessories (+13)Speaks English, Arabic(+2)51-200 membersSigli
5(11 reviews)Software development, Web development, Data Solutions, AI, ML.
Highly recommendedSigli is a forward-thinking software development company specializing in digital product development and digital transformation. Our mission, ‘ Data Science with Purpose, Innovation with Impact ’, drives us to transform innovative ideas into practical solutions. Our services encompass the entire development lifecycle, from initial concept to implementation, ensuring every product we build is high-quality, scalable, and future-proof. Sigli assists businesses in navigating the complexities of digital transformation, modernizing their operations, enhancing customer experiences, and maintaining a competitive edge in the ever-evolving digital landscape. Our team's deep expertise, combined with a commitment to leveraging the latest technologies and best practices, ensures we deliver impactful results for our clients. Our dedication to excellence is further demonstrated by our ISO/IEC 27001 certification, the leading standard for Information Security Management Systems (ISMS). This certification underscores our commitment to maintaining the highest standards of information security, making us a trusted partner for businesses looking to thrive in the digital age.18 works in Web ApplicationLocated in Antwerp, Belgium (+2)From €10,000 for Web ApplicationWorked in Software & Computer Services (+12)Speaks English, Dutch(+3)51-200 membersHalo Lab
5(12 reviews)Transforming your product idea into reality through custom design-driven development.
Highly recommendedTop awardedHalo Lab is an award-winning custom web app design and development company ⭐ Our team offers reliable, customized, and user-friendly solutions for your business. We transform your product ideas into reality with our expert, design-driven development approach. Let us bring your vision to life with our innovative and tailored services. WE ARE YOUR PARTNER IN: ✅ Enhancing user experiences with UI/UX design. ✅ Building your brand identity. ✅ Growing your online presence with website development. ✅ Creating smooth digital experiences with full-cycle web app development. ✅ Ensuring top-notch quality with QA. ✅ Boosting growth and visibility with SEO & marketing support. Let’s create your star with us.4 works in Web ApplicationLocated in Dubai, United Arab Emirates (+4)From €10,000 for Web ApplicationWorked in Transportation (+18)Speaks English51-200 membersTHINGS
5(6 reviews)Product and Innovation Design
THINGS IS a product & innovation design agency for disrupting global B2C/ B2B markets. We design compelling experiences for hybrid (IoT) or pure digital products & services (including any kind of functional touchpoints: physical devices, web apps/sites, mobile apps, environmental...) and communication touchpoints (websites, interactive showcases, video tutorials, packaging, brochures...). We create easy, immediate & natural (voice, gesture, haptic) interactions to increase inclusivity and bring real value to every stakeholder and user.11 works in Web ApplicationLocated in Milan, Italy (+1)From €25,000 for Web ApplicationWorked in Consumer Electronics (+10)Speaks English, Italian11-50 membersDebut Infotech
5(9 reviews)AI-Augmented Product Engineering Company
Highly recommendedDebut Infotech is an AI-augmented blockchain and software development company helping organizations across financial services, healthcare, supply chain, and digital platforms build systems that perform reliably in complex, regulated environments. Founded in 2011 and blockchain-native since 2015, the company brings engineering discipline and technology depth to enterprises moving from fragmented pilots to production-grade systems. With delivery centers across the USA, UK, Canada, and India, Debut Infotech combines regional market understanding with globally distributed engineering capability — enabling clients to move with speed, consistency, and governance. Service areas: Artificial intelligence and generative AI — Enterprise LLM integration, AI agent development, retrieval-augmented generation (RAG) pipelines, predictive analytics, computer vision, and intelligent process automation embedded at the system architecture level. Blockchain and Web3 development — Smart contract engineering, DeFi protocol development, real world asset (RWA) tokenization, cryptocurrency exchange infrastructure, and enterprise blockchain on Hyperledger Fabric and Corda. Mobile application development — Native iOS, Android, and cross-platform applications (React Native, Flutter) architected for AI integration, enterprise-grade security, and sustained performance under production load. Web and software development — Full-stack web platforms, SaaS products, and enterprise software systems engineered API-first, designed for long-term maintainability and organizational scale Proven Delivery: $62M+ raised across client platforms including Ifinca, IntegraLedger, Everledger, and TĒM 90% customer success score across enterprise engagements 15 years of enterprise software delivery Fortune 500 clients and high-growth startups across 25+ industry verticals 50–249 engineers spanning AI, blockchain, and software disciplines12 works in Web ApplicationLocated in Chandigarh, India (+2)From €10,000 for Web ApplicationWorked in Others (+11)Speaks English51-200 membersMagora
5(6 reviews)PRODUCT DEVELOPMENT TAILORED FOR YOUR BUSINESS
Magora is an AI, Web & Mobile product consultancy that offers digital services to businesses across a broad range of industries, including Healthcare, Education, Retail, eLearning and eCommerce. Whether a custom AI product, B2C or a B2B project, iOS or Android app, first of all, we take the time to understand your goals, your product and the end-user’s needs. Our software development cases are loved by users for their convenience and appreciated by customers for the real value they add to your business.10 works in Web ApplicationLocated in London, United KingdomFrom €10,000 for Web ApplicationWorked in Entertainment & Events (+9)Speaks English11-50 membersDelante SEO/SEM Agency
4.9(111 reviews)Delante: SEO, SEM & AI Search in one Search Agency - focused on results, growth, and business impact
Highly recommendedTop awardedDelante is an award-winning international Search Agency specializing in SEO, SEM, and AISO (AI Search Optimization). With offices in Kraków, New York, London, Italy, Spain, we support global brands across 29 global markets. Our +65 experts create tailored strategies focused on business impact - not vanity metrics . We know that marketing has to pay off. That’s why we track ROI, ROAS, and CAC to ensure our clients’ investments generate measurable growth. From increasing visibility to scaling international sales, our result-oriented and data-driven approach makes us the trusted partner behind the success of global e-commerce and B2B leaders. Our strategies have earned us recognition from Top International Awards, including: 🏆 Forbes Diamonds 2025 🏆 Deloitte Technology Fast 50 Europe 🏆 Financial Times FT1000 🏆 Google Premier Partner - Top 3% of Agencies Worldwide 🌍 🏆 Global Search Awards 2024 - SEO Agency of the Year 🏆 European Search Awards 2024 🏆 Global Agency Awards 2024 - Best B2B SEO Agency of the Year 🏆 Global Digital Excellence Awards 2024 More visits, more sales - let’s get you in the lead! Forward is our only direction - because Delante means Forward. It’s our can-do-attitiude mindset.Looking for work in Web ApplicationLocated in Kraków, Poland (+3)From €1,000 for Web ApplicationWorked in Clothing & Accessories (+8)Speaks English, Polish51-200 membersGWC Tech Hub Limited
5(25 reviews)Digital Marketing Agency and Web Developer Company. Unveiling digital technology
Top awardedDigital Marketing Agency and Web Developer Company. Global World Connection (GWC) is a technology-oriented company (Tech Hub) and a digital marketing agency that helps in promoting unknown businesses that wishess to be known globally in the nearest future. Our aim is to reform businesses and make available top-class support services and solutions to young business owners. Founder: Kalu Silver C (Chukwuebuka)4 works in Web ApplicationLocated in Enugu, Nigeria (+1)From €1,000 for Web ApplicationWorked in Clothing & Accessories (+6)Speaks English, Chinese(+1)11-50 membersCreatif Agency
4.6(12 reviews)Web Design Agency, at Creatif Agency we help business grow online and boost their ROI
Top awardedCreatif Agency is an award-winning branding and web design agency built on one standard - that every project should be remembered. Founded in 2019, we work with startups, established companies, and ambitious founders to build brands and websites that are 100% custom, strategically sharp, and designed to last. Our services cover brand strategy, visual identity, presentation websites, eCommerce platforms, and custom digital applications all developed in-house, under one roof. Recognised by TechBehemoths as the #1 branding agency in Germany and top web design provider in Berlin and Helsinki. Our awards reflect a standard we set before the first brief arrives and hold on every project, for every client. No templates. No shortcuts. Just work that makes a difference. Serving clients across Romania, US, UK, Germany, Iceland, and beyond from startups finding their identity to enterprises redefining theirs. Creatif Agency is the design agency, built to perform.5 works in Web ApplicationLocated in Sibiu, Romania (+6)From €5,000 for Web ApplicationWorked in Food (+10)Speaks English, Romanian1-10 members