Best Next.js Development Agencies in 2026-2027

Disclosure: eSEOspace publishes this blog and ranks itself first. Every other entry was researched independently and links to its own site.

Next.js stopped being a niche React framework a while ago. It is now the default answer for marketing sites, headless commerce front-ends, internal dashboards and AI product surfaces, which means "we do Next.js" tells you almost nothing about whether a given agency can do the specific job you have.

The agencies below are not interchangeable. One of them is essentially a replatforming firm. One is a headless CMS specialist that happens to ship Next.js. One builds application-shaped software with auth and streaming. One is a static-site studio that will talk you out of an application layer you do not need. Picking the wrong category costs you more than picking the wrong price point.

This list is short on purpose. Eight entries, each with a real reason to be here and an honest note on where it is the wrong call.

How we evaluated these Next.js agencies

Four filters, applied in order.

1. Verifiable Next.js depth. The agency has to demonstrate Next.js work on its own site, not list it as one logo in a stack grid of thirty. Positioning statements were taken from each company's own pages.

2. A clear specialism. Generalists get filtered out. Every entry here has a shape: migration, CMS, application, static output, or growth. A shortlist of five near-identical shops is useless to a buyer.

3. Honest sourcing. Every claim in this article traces back to something the company publishes about itself, or to a public directory that is named in the sentence. Where a founding year, headquarters city, team size, review score or client name was not confirmable, it is omitted. You will notice several entries below with no founding year and no location. That is deliberate. Those companies do not publish it, and inventing it would make this list worthless.

4. Fit for a real buyer. Each entry answers the same question: what kind of company should sign this contract, and what kind of company should not.

Self-reported awards, self-reported Clutch scores and self-reported partner tiers were noted but not treated as evidence. They are marked as claims where relevant. Where a company's own claim and a public directory disagree, both are shown rather than one being quietly picked.

Comparison table

1. eSEOspace

Founded: 2019 Best for: Companies who need the Next.js build and the traffic, conversions and reporting that are supposed to follow it.

Most agencies on this list hand you a fast site and leave. That is a legitimate business model, and it is also the single most common reason a rebuild goes sideways: the new site is technically excellent and gets less organic traffic than the old one.

eSEOspace sits at rank one here because the build is only part of what we do. We work across website design, custom software design and development, and the growth side that determines whether any of it pays back: organic SEO, conversion rate optimization, and insights and analytics so you can actually see what changed after launch.

In practice that means the questions we ask early are different. Not just "what should this page look like" but: what does the URL structure need to be, which pages currently earn traffic, what happens to them, how do editors publish without a developer, what event tracking has to survive the move, and what does a conversion look like once the visitor arrives. That work belongs to the same team that ships the front-end, because splitting it across two vendors is how redirects get missed and tags get dropped.

We also handle the parts adjacent to the front-end that clients usually discover late: custom backend and CRM development when the site has to talk to a real system of record, ecommerce design and development for storefronts, and content management so the CMS matches how your team actually writes.

We are not going to put a framework name or a statistic in this section, because the standard applied to every other entry applies here too. Judge us the way you should judge them: ask for a live URL, ask what happened to organic traffic in the six months after that launch, and ask who owned the redirect map.

Worst fit: If you have an in-house growth team and you specifically want a pure engineering vendor to execute a spec you already wrote, we are more agency than you need. Several shops below are a better shape for that, and we would rather say so than sell you overlap.

Where to start: Book a call and bring your current analytics. The first useful conversation is about what your existing site earns, not what the new one should look like.

2. Blazity

Website: blazity.com Location: Warsaw, Poland Best for: Enterprises replatforming off a legacy stack onto Next.js, or adding production AI agents to an existing Next.js platform.

Blazity is a Next.js-first engineering shop that has moved its headline positioning toward enterprise AI agents and workflows on the Vercel AI Cloud. Its stated service lines are AI engineering, performance engineering, migration and modernization off legacy platforms, application development, and technical consulting including audits and architecture review.

Its published client list is the strongest signal here: Cook Unity, Solana, Planday, Reckitt, Tom Tailor, Speechmatics, Arthur AI and Encoura. That is enterprise and funded-startup work, not small business work, and it lines up with the migration-and-performance pitch.

The partner claim checks out, which is worth saying because on this list it is the exception. Blazity's site describes it as a "Certified Vercel Partner," and Vercel's public solution-partner directory lists Blazity in the Gold tier. If partner status matters to your procurement process, this is the entry where you will not have to argue about it.

Two things it does not publish: a founding year, and a team size. The site refers to "8 years of engineering at scale," which implies roughly 2017 or 2018, but no incorporation date is stated anywhere, so this article does not assign one. A Warsaw street address is published, which is more than most of this list offers.

Worst fit: A five-page marketing site. This is an enterprise engineering shop and the engagement shape will reflect that.

3. FocusReactive

Website: focusreactive.com Founded: 2019 Location: Amsterdam, London and Warsaw, also globally remote Best for: Content-heavy sites and composable commerce where the CMS choice and migration path matter as much as the front-end.

FocusReactive leads with "Scalable Headless CMS Solutions" and describes itself as experts in Next.js, composable CMS and ecommerce. That ordering is accurate. The practice is built around pairing Next.js front-ends with Sanity, Storyblok, Payload, DatoCMS, Contentful, Directus and Hygraph, extending into Medusa, Swell, Shopify Plus, Crystallize and Commerce Layer on the commerce side.

The about page is one of the few on this list that answers the basic due-diligence questions directly. It gives a founding year of 2019 and describes a core team of 20 engineers. That is a small, senior-shaped team rather than a body shop, which is consistent with the specialist positioning.

If you already know you want Sanity or Storyblok, this is the shortlist. Named clients on the case study pages include Arrive, EasyPark, Caleffi, QuantHealth, EmailOctopus, Betway and Blexr.

Two things to note. The site lists three office addresses with no primary designated, so if you need a specific legal jurisdiction on the contract, ask. And the awards displayed on the site, including Top Sanity Developers and Top Next.js Developers placements across several years, are directory awards reproduced by the company. Vercel's own solution-partner directory independently lists FocusReactive at Silver tier, which is the part of the credential stack that did verify.

Worst fit: Application work with heavy auth, real-time or complex business logic. The centre of gravity is content, not product engineering.

4. Bejamas

Website: bejamas.com Best for: Companies with a large existing site on a legacy CMS who want the entire replatform owned end to end.

Bejamas describes itself as "a senior European web team that moves you off your legacy CMS onto one modern platform," audited, migrated and then run with you. The engagement is structured in four stages: Audit, Design, Migrate, Run. That last stage is the differentiator. Most agencies stop at launch.

The stack spans Next.js, Contentful, Storyblok, headless WordPress, Gatsby, DatoCMS, Netlify and Vercel. Vercel's public directory lists Bejamas at Silver tier.

The published work is deep enough to judge. Named projects include Danone, Alpro, Deliverect, Rippling, Descope, Backlinko, Transcend, Newfront, Bennetts, HanseYachts, Veezu and Delphix. The Backlinko case study is the most useful reference for anyone moving a high-traffic content property: it documents a move from traditional WordPress to headless WordPress with a Next.js front-end, and reports roughly three times faster loading and a 64 percent performance improvement, with a quote attributed to founder Brian Dean. Bejamas does not publish how long that project took, so this article does not put a number on it.

No founding year, no headquarters city and no headcount are published. The site says only "European." The about page shows four company leaders, of whom one is named on the page, CEO and co-founder Denis Kostrzewa. If vendor due diligence at your company requires an entity address, get it in writing before you start.

Worst fit: Greenfield product builds. The whole model assumes there is an existing platform to move off.

5. Roboto Studio

Website: robotostudio.com Best for: Application-shaped Next.js work: internal dashboards, AI product surfaces, hybrid SaaS front-ends.

Roboto's homepage positions the firm as a Next.js and Sanity agency building fast editorial experiences, while its Next.js service page leads with "Next.js apps, built for the first real version." The service description behind that is unusually specific for this industry: AI chat, customer portals, authenticated workflows, dashboards and CMS-backed product surfaces on the interface side, and authentication, caching, streaming AI responses, cost controls, observability and preview deployments on the foundations side. It also names Vercel deployment models, firewall rules, analytics, error reporting and web vitals, plus multi-step onboarding, file processing, agent runs, human approval steps and background jobs.

That list is the reason it earns a place. Auth, caching, streaming and cost control are exactly the areas where a marketing-site agency ships something that works in demo and falls over in production. An agency that names them upfront has probably been burned by them.

The published work backs the positioning. Roboto's case study index names more than twenty clients, among them Airtime Rewards, Mojo Mortgages, Livemore Mortgages, Tray.ai, Tabby.ai, Global Cycling Network, Topaz Labs, Teckro, Key ESG, Slingshot Bio and Savory and Partners. That is a genuinely mixed roster of fintech, SaaS and content properties, which is what you want to see from a studio claiming application work rather than templates.

Two credentials need naming rather than repeating. Roboto's site states that it is "A Silver Solution Partner for Vercel." Vercel's public solution-partner directory, which listed 114 tiered agencies when this article was researched, does not include Roboto Studio. That does not mean the relationship is fictional, directories lag and partners get added and removed, but the two sources disagree and you should ask directly rather than take either as settled. Separately, the site claims to be one of 15 starred partners in a Sanity directory of 218 agencies. That figure could not be verified against Sanity's own directory for this article, so treat it as a company claim.

No founding year, headquarters city or team size is published.

Worst fit: Buyers whose procurement process requires a verified partner badge and a registered entity address before signing. The case studies are public and detailed, but the corporate paperwork is not.

6. Naturaily

Website: naturaily.com Location: Poland Best for: Mid-market ecommerce and marketing sites moving to a headless Next.js front-end.

Naturaily is a web development and design agency organised around web and UX design, ecommerce including Shopify and Shopify Plus, and headless CMS work with Storyblok, Sanity, Payload and Strapi. Next.js features prominently alongside React, Vue and Nuxt, with deployment across Vercel, Netlify and Cloudflare. The positioning is outcome-led rather than framework-led, which is a reasonable stance for a commerce shop.

The client range is broad and genuinely mid-market: n8n, FGS Global, Nanobébé, Bronson Labs, Capitalise, LingoHub, Boodil, Carnium Botanicals, Nerdy Banana, DreamApply and Best IT. That mix of SaaS, consumer brands and B2B is a reasonable proxy for how they will handle a mixed catalogue and a marketing site in the same project.

The numbers on the site are all self-reported and should be read that way: "13+ years" in business with no founding year named, more than 200 projects, 95 percent of projects delivered within the initial estimate, and a 4.9 out of 5 Clutch rating displayed on the homepage. None of these were verified at source for this article. The site identifies the team as Poland-based, with a Polish phone number, but no city was stated on the pages reviewed. Naturaily does not appear in Vercel's solution-partner directory and, to its credit, does not claim to.

If ecommerce is the driver, the build is only half the job. Storefront performance without ecommerce SEO and ecommerce CRO tends to produce a faster site with the same revenue.

Worst fit: Complex custom application logic. This is design plus commerce plus content, not product engineering.

7. StaticMania

Website: staticmania.com Best for: Marketing sites and documentation properties where static output and Core Web Vitals are the entire point.

StaticMania describes itself as "Next.js, Hugo & Astro experts building lightning-fast static websites" and, on its about page, as "a creative tech studio and engineering partner focused on Next.js, Hugo, and Astro." Services include static site development, Core Web Vitals optimization, UI/UX and design systems, static site migration, headless CMS integration with Contentful, Strapi and Sanity, and long-term support.

The multi-framework stance is a feature. A studio that also ships Hugo and Astro is more likely to tell you when Next.js is heavier than your project needs, and for a docs site or a brochure site that is frequently true. The migration line off WordPress is the practical entry point for most buyers here.

Named clients are Obie, MantisNLP and CloudCannon, with a testimonial attributed on the site to Chris Buttenham, founder of Obie. The founder is named on the about page as Atique Hasan, Founder and Creative Director.

One caution on the numbers. The about page claims "100+ satisfied clients worldwide" and "50+ projects delivered," while the homepage cites "30+ completed projects." Those are the company's own figures and they do not reconcile with each other, so do not build a shortlist decision on them. No founding year, headquarters or team size is published.

Worst fit: Anything with logged-in users, dynamic personalisation or a serious data layer. The specialism is static output, and pushing it toward an application shape wastes what makes it good.

8. Increasio

Website: increas.io Founded: 2017 Best for: Teams who want a partner whose entire identity is the framework, especially for staying current on the newest Next.js release line.

Increasio markets itself narrowly and consistently. The Next.js page leads with "Next.js Development Agency - We Build What Others Prototype," and the company describes itself as "a Next.js 16 development agency and Vercel partner," working across App Router, Turbopack and Server Components. Services cover website and application development, headless CMS integration with Contentful and Strapi, headless commerce on Shopify Hydrogen, MVP development, and Svelte and Gatsby work alongside Next.js.

The 2017 founding date is confirmed on the company's own about page and is the earliest verified date on this list. That matters if you want a partner who has lived through several major version migrations rather than one who arrived with the App Router. The about page describes a distributed team across the EU, the US and Ukraine, with no registered office address published.

The partner claim is the sticking point. The Next.js page states "Official Vercel Partner" and a "Direct partnership with the creators of Next.js since 2022." Increasio does not appear in Vercel's public solution-partner directory of 114 tiered agencies. As with Roboto, that is a disagreement between two sources rather than proof of anything, and it is a fair question to put to them on the first call.

Increasio is also the one agency here that publishes a price anchor: the Next.js page states that a Next.js 16 marketing website "can start from $4k." Read that as a floor for the simplest scope, not a quote.

The portfolio does name real clients, including Teyrex, Jolly Learning, CashFlowFrog and Xternity, alongside a set of internally named projects such as Sparkle and Starlight that are harder to attribute. The site also displays stat blocks including "120+ Next.js projects shipped" and "210 Projects delivered," plus a counter referencing Fortune 500 clients that names none. Those figures are unverified, and the Fortune 500 counter in particular is the kind of claim worth asking a specific question about.

Worst fit: Risk-averse procurement. A narrow specialism is genuinely valuable, but if your process requires verified partner status and a registered entity address, budget time for that conversation upfront.

Who should hire which

Frequently asked questions

Conclusion

The best Next.js agency in 2026 is not a single company, it is the one whose specialism matches your actual risk. If the risk is a migration, hire Bejamas or Blazity. If it is the content model, hire FocusReactive. If it is the application layer, hire Roboto Studio. If it is page speed on a marketing property, hire StaticMania. If it is commerce, hire Naturaily. If you want a pure framework shop, hire Increasio.

And if the risk is that your beautiful new site earns less than the old one did, that is the gap eSEOspace exists to close. A rebuild that ships on time and loses a third of your organic traffic is not a successful project, it is an expensive one.

Whatever you decide, do the boring verification. Ask for a live URL. Ask who owns the redirects. Ask what happens the week after launch. And when an agency shows you a badge, spend the two minutes it takes to look for it in the issuing directory, because on this list alone that check changed the answer twice. Agencies that answer those questions clearly are the ones worth shortlisting, and this article deliberately left blank every fact that could not be checked, because you deserve the same standard from the vendors you are about to pay.

Ready to talk through your own build? Book a call with eSEOspace.