7 Agencies for Legacy Website Modernization and AI Automation (2026): An Honest, Sourced List

Short answer: For enterprise multi-brand web estates in Europe, Bejamas. For US B2B SaaS marketing sites, Webstacks. For SEO-critical CMS migrations and white-label agency overflow, Pagepro. For legacy PHP plus productized AI automation, InfyOm. For a small fixed-price first step on an owner-run site, Ready Bytes. For AI-only work on an existing product, DestiLabs. For a new AI-native product from zero, ScaleTeam.

Now the long answer, with the parts each of them would rather you skipped.

Why this list exists, and what makes it different

Search "best legacy modernization agency" and you get pages written by people who have never opened the websites they are ranking. Twenty entries, all excellent, all "innovative and results-driven", no reason to pick any one of them.

This is not that. I read seven agency websites in one sitting on 13 August 2026, in a real browser, and wrote down only what each one actually publishes. Where an agency states a number, I say it states that number — I have not audited anyone's books. Where I could not find something, I say I could not find it rather than filling the gap with an adjective.

Two disclosures before anything else:

1. Ready Bytes is my company. It is entry five, and the position means nothing — this list is ordered by the kind of buyer each agency fits, largest budgets first. I have written the "look elsewhere" section for Ready Bytes with more specificity than for anyone else, because it is the only one where I know exactly where the bodies are.
2. Nobody paid to be here. No affiliate links, no sponsorships, no reciprocal-link deals. I have never worked with or against any of the other six.

The comparison table

Agency	Based	Core focus	Legacy web / CMS migration	AI automation	Price published?	Named clients on site?
Bejamas	Europe, distributed	Enterprise web estates, audit → migrate → run	Yes, flagship	Not offered	No	Yes (Danone, Rippling, RudderStack)
Webstacks	San Diego, CA, USA	Composable marketing sites for B2B tech	Yes, marketing sites	Listed as "AI for Web"	No	Yes (Gong, Calendly, ServiceTitan)
Pagepro	UK	Next.js + Sanity migrations, SEO parity	Yes, flagship	Chatbots only	No	Yes (GPnotebook, Packhelp)
InfyOm	Surat, India	Laravel + n8n/WhatsApp/voice agents	PHP → Laravel only	Yes, flagship	No	Partly (FlexyFit, Shining Qualities)
Ready Bytes	Bhilwara, India	Modernization + AI wired into existing systems	Yes	Yes	Yes	Yes (ReelAbilities, LinkStorm, Pictory)
DestiLabs	Tallinn / Kyiv / Lisbon	Agentic AI, chat and voice	Not offered	Yes, flagship	Yes	Partly (Odycy)
ScaleTeam	Surat, India	AI-native product studio, zero to launch	Not offered	Yes, flagship	No	Testimonials only

Two of seven publish a figure before you get on a call. That single column is the most useful thing on this page, and I will come back to it.

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1. Bejamas — for enterprise web estates that sprawled across five CMSs

Best for: A large organisation with several brands, several CMSs and a marketing team that files a ticket every time it wants to change a banner.

What they publish. Bejamas describes itself as "a senior European web team" with a four-stage model: Audit → Design → Migrate → Run. That fourth stage is the one to look at: they stay on after launch rather than handing you a repo and leaving. Their about page says the team lives "in 12 different countries and 4 different time zones", organised into what they call tribes.

The client work is the strongest evidence on any site in this list, because it is named and it is specific:

• Danone (Alpro) — migrated to Next.js + Contentful + Netlify; site states 4M+ monthly active users and 127% faster page loading
• Bennetts — moved off Sitecore, three sites consolidated onto one platform; 44% mobile and 24% desktop performance improvement stated
• Veezu — moved off WordPress; 96% mobile and 78% desktop performance improvement stated
• RudderStack — 6× leads and 15× faster build times stated
• Rippling, HanseYachts (7 brands on one platform)

Named enterprise clients with numbers attached is a much higher bar than "a leading fintech company", and Bejamas clears it.

Look elsewhere if:

• You are one site with a five-figure budget. Every featured project is enterprise-scale, and nothing on their site suggests a small-engagement lane.
• You need AI agents, workflow automation or anything beyond the web platform itself. Their services are audit, design, migrate, run. AI is not in the list.
• You need a single accountable office and legal entity in your own country. Distributed across 12 countries is a genuine advantage for coverage and a genuine complication for procurement.
• You want a price before a call. There is no pricing page.

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2. Webstacks — for US B2B tech companies whose website is a growth engine

Best for: A Series A-to-IPO B2B software company where the marketing team owns the website and the current one is slowing them down.

What they publish. Webstacks calls itself a "composable web agency" and operates out of 225 Broadway, Suite 700, San Diego, CA 92101 — the only agency here with a US street address on the site. Capabilities span design, engineering, strategy, SEO/AEO, CRO and AI, which is broader than the pure-engineering shops on this list.

The client list is the pitch: Gong (WordPress → Sanity-powered composable platform), ServiceTitan (stack migration plus a unified design system across subsidiaries), Calendly, Snowflake, Circle, Solana, UpKeep, OctoAI. Their stack list is deliberately plural — Next.js, Gatsby, Storyblok, Sanity, WordPress, DatoCMS, Webflow, HubSpot CMS, Netlify, Vercel — so unlike Pagepro they are not going to push you onto one CMS by default.

They list SEO/AEO as a first-class capability, and their footer carries an "Explore us in AI tools" line. They are optimising for AI-search citation themselves, which tells you something about where B2B web work is heading.

Look elsewhere if:

• Your legacy problem is an application, not a marketing site. Everything on the site points at marketing websites — redesigns, migrations, design systems, content velocity.
• You are not B2B technology. Every named client is SaaS, fintech, web3 or enterprise software. The industry pages confirm it.
• Your legacy stack is PHP-era Joomla or Drupal with heavy custom modules. Nothing on the site addresses that migration path.
• You need capacity immediately. Their own banner when I visited read "Got a tight timeline? Remaining Q3 start slots are limited."
• You want a price up front. No pricing page; /pricing redirects to the about page.

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3. Pagepro — for SEO-critical CMS migrations, and for agencies subcontracting them

Best for: A content-heavy, SEO-dependent site — thousands of URLs, rankings you cannot afford to lose — moving off WordPress or a monolith. Also the strongest option here for agencies that need someone else's engineers behind their own brand.

What they publish. A UK agency ("Top-Rated UK Agency", 4.9 from 31 Clutch reviews), Official Sanity Partner since 2019 and Official Vercel Partner, claiming the #1 spot in Clutch's Sanity development category and 100+ production Sanity implementations.

They are aggressively narrow, and say so: "Three technologies. Five years of depth. One team." — Next.js, Sanity, Vercel, plus Expo/React Native for mobile. Three engagement types only: migrate to Next.js + Sanity, take over a stalled Next.js project (production-ready in two weeks or the critical fixes are free), or continuous support.

The migration proposition is the sharpest on this list:

• Nexity, a proprietary migration framework they say is extracted from 50+ production projects, which they claim delivers migrations roughly 70% faster than building from scratch
• A live demo in 48 hours built on your real content and your real domain, before any commercial commitment
• SEO parity as default: URL parity audits, 301 redirect mapping, structured data preservation, Core Web Vitals targeting
• Flagship case: GPnotebook, a clinical reference platform their site says around 80% of UK GPs rely on, migrated at 100,000+ pages with URL parity and rankings preserved

The agency angle. Pagepro runs a dedicated /for-agencies line — "You design. We code." — and states they have worked this way with agencies for over a decade. If you run a design or CMS shop and keep turning down replatforming work, this is a direct competitor to what I offer, and on the Sanity/Next.js path specifically they have gone deeper than we have.

Look elsewhere if:

• You want to stay on WordPress, or you want a CMS that isn't Sanity. They ship one stack. The narrowness is the product; it is also the constraint.
• You need AI agents or operational automation. Their AI offering is chatbot development and Next.js SEO/AI optimisation, not workflow automation.
• The 70% and "zero SEO ranking drops" claims matter to your decision. Those are Pagepro's own marketing numbers about their own framework, with no methodology published. Ask for the redirect maps and Search Console screenshots from two migrations before you sign.
• You want a price up front. Their migration services page has none.

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4. InfyOm — for legacy PHP shops that want productized AI automation

Best for: You are on an ageing PHP codebase and you want both the code modernised and some AI automation bolted on, from one team, without paying for custom research.

What they publish. Founded 2015 in Surat, India by CEO Mitul Golakiya. The origin story is Laravel open source — recognised as a Laravel contributor on GitHub in 2016, Envato Power Elite Author, 25+ marketplace products, and the homepage cites 15+ open-source packages with 5 million+ downloads.

Their 2026 repositioning is explicit and, refreshingly, publicly dated on their own timeline: 2024 "Entered in AI Era", 2025 "planning to pivot our business model", 2026 "Re-positioned as AI Automation Agency". They are honest enough to publish that this is a recent turn.

What that turn produced is genuinely different from everyone else here — productized automation rather than bespoke builds:

• Ready-to-deploy WhatsApp AI agents for clinics, restaurants and salons
• Ready-to-deploy voice AI agents for reservations, appointment booking, event confirmations
• n8n workflow automation with a browsable template library
• Case study: FlexyFit Academy, "A Seamless Migration from Legacy PHP to Laravel" — the only explicit legacy-modernization case study among the three AI-first agencies here
• Case study: Shining Qualities, a diamond marketplace their site says processes 1M+ diamonds a day

One thing to check yourself. InfyOm's self-reported figures differ between its own pages. The homepage states 250+ projects, 120+ clients, 40+ professionals and 15+ countries; the about page states 100+ projects delivered, 40+ clients, 40+ technocrats and 9+ years. Both are on the live site on the same day. Treat all of them as directional and ask for the current numbers on the call. Separately, their navigation lists "White Label Solutions", but that link resolved to the homepage when I followed it.

Look elsewhere if:

• Your legacy stack is not PHP. This is a Laravel house that added MERN in 2021; the deep expertise is Laravel.
• You want a headless-CMS or Jamstack rebuild. Not their model.
• SEO preservation is the risk you are buying insurance against. I found no migration case study that discusses redirects, URL parity or ranking retention.
• You want price transparency. No pricing page.

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5. Ready Bytes — for owner-run sites, and for agencies that need a bench

This is my company. Read the next section as a pitch and the one after it as the thing I would say to you on the phone.

Best for:

• An owner-run business on a decade-old site or CMS that wants to spend a small, fixed amount to find out what is actually worth doing, before committing to a rebuild
• A design studio, CMS agency or freelance developer who keeps turning away modernization work and wants an engineering bench behind their own brand
• A company that wants AI wired into the systems it already runs — the CRM, the helpdesk, the spreadsheets — rather than a greenfield AI product

What we publish. Founded 2009, based in Bhilwara, Rajasthan, India, serving mostly US and EU clients. Founder-led; I am on every project.

We publish our prices, which almost nobody in this category does:

Step	Price	Duration
Audit	Free	~15 questions, written audit emailed within two business days
Full Audit	$500	Read-only system access, top 3 opportunities ranked by ROI, 90-day roadmap, fixed pilot quote. Credited against the pilot if you proceed.
Pilot	$3,000–$8,000	2–6 weeks, fixed quote before we start
Partner	Retainer	Ongoing

The free step is a 15-question audit; the services page lists what the pilot and partner tiers actually cover.

Evidence, with the sources attached. Our newest case studies carry a source and a date on each individual metric, so you can check any of them without asking me:

• ReelAbilities (US nonprofit film festival, client since 2022) — 15 city festival sites on one codebase; a new city takes about 30 minutes to stand up; page loads 4.2s → 0.8s; Lighthouse accessibility 97 (measured August 2026 on the live homepage); CMS licensing $0/year self-hosted vs $4,800–6,000/year for a commercial headless CMS. We also publish the bad part: Directus needed 20–30% more development time than we estimated because of silent image-upload failures, admin UI lag with concurrent editors, and no config sync between environments.
• EcoMitram (volunteer project, not a paid client — we say so on the page) — 1.37M installs, 1.2M registered users (Play Store + Firebase console, September 2024); 804M API hits, 3M visitors and 6+ TB of traffic during a single campaign, peaking at 86,000 users a day, served from one small VPS behind Cloudflare's free tier.
• LinkStorm (SEO SaaS, Spain) — 2,100+ commits from us since 2023 (git history); the relationship converted from client to formal partnership in 2025.

Where the legacy credibility comes from. Ready Bytes started in the Joomla extension ecosystem in 2009. Two of those products became IP exits — PayPlans (sold 2017) and Exchange Rate IQ (sold 2018). That decade produced roughly 3,500 paying customers, most of them agencies and developers, which is precisely why the "your site is from that era, here is what to do about it" conversation is one I have had a few hundred times. ReadyViews, our AI product, was shut down. It was not sold. I mention it because a list like this is worthless if the author only reports the wins.

Why you should not hire Ready Bytes

• We are small and I will not pretend otherwise. We do not publish a headcount. If your project needs fifteen engineers next month, we are the wrong call, and I will tell you that on the free audit rather than after the deposit clears.
• Founder-led is a feature and a bottleneck. I am on every project. That is the reason the work is consistent and the reason we cannot run six pilots at once.
• India-based, with the timezone consequence that implies. EU mornings overlap comfortably. US Pacific does not. If you need daily standups at 9am Pacific, that is a real cost you should price in.
• Our own evidence quality is uneven, and I would rather say it than have you find it. The three case studies above carry a source and a date on every metric. Older portfolio entries do not — a few carry numbers with nothing attached, and I have deliberately kept them out of this post. If you are evaluating us, evaluate the sourced ones and discount the rest.
• The AI-automation practice is younger than the web practice. We shipped machine learning in 2015 and we have real AI work in production now — semantic search on embeddings, an alt-text generation pipeline, a bilingual loan-intake chatbot — but the deep, continuous AI record starts around 2022, not 2015. Anyone selling you "a decade of AI" is selling you a decade of something else.
• We publish no compliance certifications. We hold no third-party accessibility certification — and we say so on the ReelAbilities page, because no honest agency should claim one without an audit. If your procurement process needs certification documents, ask on the first call; we will tell you exactly what we do and do not hold rather than let you find out at the security-review stage.
• We are not a design-led agency. Bejamas and Webstacks will out-design us. If brand and visual polish is the primary deliverable, hire them.

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6. DestiLabs — for AI work on a product you already have

Best for: You have a working product, you want AI added properly, and you want a European timezone. Or you already have an AI system that is underperforming and you want an independent read on why.

What they publish. Offices listed as Tallinn, Kyiv and Lisbon. Founders named on the homepage: Iryna Yurchenko (CEO) and Mike Kushnir (CTO). The site states 10+ years building production AI systems, 50+ AI projects across fintech, retail and healthcare, and $20M+ in client revenue generated and costs saved.

They publish audit pricing, and the packaging is the most honest entry-point offer in this list:

Engagement	Price	Duration
Discovery call with the co-founders	$0	30 minutes
AI Audit Package	$3,000–$5,000	1–2 weeks

The audit deliverables are itemised: full code, data and infra review; a reproducible model evaluation; data quality assessment; scaling recommendations; a written report with every finding prioritised, scoped and estimated. Their framing of when you need one is unusually specific — accuracy below the demo's promise, a system that cannot handle its load, or an LLM bill you cannot explain. That last one is a real 2026 problem and almost nobody sells against it.

Ten case studies, most with hard numbers: Odycy (named healthcare client, 67% fewer support inquiries), mortgage background checks from >48h to minutes, a voice bot at 0.99–1.2s latency and under $0.15/minute, a financial-API agent at 93% precision, generative imagery moving from ~$300 to ~$2.50 per asset.

Look elsewhere if:

• Your problem is a legacy website or CMS. They do not offer it. The services list is AI Audit, Proof of Concept, AI Agents, AI Chatbots, Machine Learning, Software Development — and every case study is AI. If your Joomla site is the problem, this is the wrong door.
• You need a single named client behind each headline number. Most case studies describe the client by category rather than by name.
• You want the $20M+ figure to be auditable. It is a self-reported aggregate with no methodology published. Ask how it is calculated.

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7. ScaleTeam — for founders building a new AI-native product from zero

Best for: A funded founder with an AI product idea and no engineering team, who wants an architecture document in days and something in production in weeks.

What they publish. Scaleteam Technologies Pvt Ltd, founded 2016 in Surat, India, started as a four-person Node.js consultancy. Their timeline is specific: first ML integration in 2019, reorganised around LLMs in 2022 after GPT-3, AI-first by default from 2024.

What they actually sell is the process: architecture document by day three, weekly demos, eval pipelines built in as standard, "six weeks to demo-ready, twelve to revenue". Their stated standards include no juniors on projects, no billing by the hour, 20% research time per engineer, and — the line I liked most — "if AI isn't the right solution for your problem, we'll tell you. We've turned down projects where the technology wasn't the right fit."

Named clients appear in the testimonials rather than the case studies: TYKR (Sean Tepper, CEO — quoted as growing from 1,000 to 3,500 users), Poly9 Inc. (Suhail Pothigara), Foove b.v (Masi Dawoud).

Look elsewhere if:

• You have a legacy website or CMS. They do not do it, and the site never claims to.
• You want the headline metrics tied to named clients. The homepage case studies — 60% reduction in paralegal hours, 4.2× daily active users, 78% voice auto-resolution — attach to "a legal tech startup", "a B2B analytics platform" and "an e-commerce brand". The named clients are in the testimonial block, which is a different set.
• Team size matters to your decision. Their homepage marquee states 26 engineers; their about page states 18 engineers and researchers, and "18-person team". Both were live on the same day. Ask.
• Your domain is regulated or data-heavy. "Six weeks to demo-ready" is a promise built for greenfield consumer and B2B SaaS, not for something that needs a data protection impact assessment first.

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How much does legacy website modernization actually cost?

Almost nobody will tell you before a sales call. Of the seven agencies on this page, five publish no pricing at all — I checked /pricing on each and found either a 404 or a redirect.

The two that do:

• DestiLabs — $0 discovery call, then a $3,000–$5,000 AI audit over 1–2 weeks
• Ready Bytes — free audit, $500 full audit (credited against the pilot), $3,000–$8,000 pilot over 2–6 weeks

Both are structured the same way: a small paid diagnostic that de-risks a larger commitment. If an agency will not scope a small first step, you are being asked to bet the whole budget on a proposal document.

That said, a published price is not the same as a good price. Pagepro's 48-hour live demo on your real content, before any commercial commitment, is arguably a stronger de-risking mechanism than a cheap audit — it just is not expressed in dollars.

How to check any of these agencies yourself

Five questions that separate a real modernization partner from a well-designed website. I would answer all five for my own company, and you should hold me to that.

1. "Show me the redirect map and the Search Console data from your last migration." Anyone who has actually preserved SEO through a replatform has these artefacts. Anyone who has not will talk about their process instead.
2. "Where does this number come from, and when was it measured?" Every agency on this page states metrics. The good answer names an instrument and a date — "Play Store console, September 2024", "Lighthouse on the live homepage, August 2026". The bad answer is a shrug and a rounder number.
3. "What went wrong on your last project?" If nothing ever goes wrong, you are talking to a sales page, not an engineering team.
4. "Who specifically will write the code, and are they on this call?" Several agencies here explicitly promise senior-only staffing. Make them name names.
5. "What is the smallest engagement you will take?" The answer tells you whether you are a client or an inconvenience.

Frequently asked questions

What does "legacy modernization" actually mean?
Moving a website or application off an ageing platform — a decade-old CMS, an unsupported PHP version, a monolith nobody wants to touch — onto a current stack, without losing content, URLs, search rankings or the ability of a non-technical team to publish. The migration itself is the easy half; SEO parity and editorial autonomy are where projects fail.

Should I hire a modernization specialist or an AI agency?
Depends which problem is actually costing you money. If your marketing team files a ticket to change a headline, that is a platform problem — Bejamas, Webstacks, Pagepro. If your team is copying data between three systems by hand, that is an automation problem — InfyOm, DestiLabs. Ready Bytes sits across both, which is a strength if your problem is genuinely both and a distraction if it is not.

Can I white-label another agency's team under my own brand?
Yes, and three of these publish an agency-facing offer. Pagepro runs a dedicated /for-agencies line and states over a decade of working this way. Ready Bytes offers a partner retainer. InfyOm lists White Label Solutions in its navigation, though the link resolved to the homepage when I checked. Ask any of them how they handle client-facing communication and IP assignment before you sign.

How long does a legacy CMS migration take?
The agencies here publish very different numbers, because they are describing very different work: Pagepro guarantees a stalled Next.js project production-ready in two weeks and offers a 48-hour demo on real content; ScaleTeam states six weeks to demo-ready for a new product; Ready Bytes runs 2–6 week fixed-price pilots. A 100,000-page migration like Pagepro's GPnotebook project is a different order of magnitude from any of those. Anyone quoting you a timeline before they have seen your content model is guessing.

Why is Ready Bytes on a list Ready Bytes wrote?
Because leaving it off would be a different kind of dishonesty — you would find out anyway, and then you would trust none of it. What I owe you instead is the caveats, which is why the "why you should not hire Ready Bytes" section above is the longest negative section on this page. Position five is by buyer type, not merit.

Methodology

Every factual claim about the six agencies other than Ready Bytes was read directly from their live public websites on 13 August 2026, using a real browser. Pages read: homepage, about, contact, case studies, services and pricing where those existed. Where a page 404'd or redirected, I have said so.

I have independently verified none of the self-reported metrics — not the client counts, not the performance improvements, not the revenue figures. Where an agency states a number, this post says it states that number. That distinction matters more than it looks: almost every agency comparison you will read collapses "they claim" into "they achieved."

Ready Bytes facts come from our own published pages and case studies, using only metrics that carry a stated source and date. Where our older material carries unsourced numbers, I have left those numbers out of this post entirely rather than launder them through a comparison table.

No agency was contacted, paid, or given a preview. If you work at one of these companies and something here is out of date or wrong, email me and I will correct it with a visible note — shyam@readybytes.in.

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Shyam Verma founded Ready Bytes in 2009 and has been building software since 2005. Two of the products from that period — PayPlans and Exchange Rate IQ — became IP exits. He writes about legacy modernization, migrations and applied AI at readybytes.in/blog.

Last updated: 20 August 2026. Agency facts were read on 13 August 2026 and have not been re-checked since.