Quick Answer
Dev Technosys tops this list of Florida-connected stablecoin and blockchain companies in 2026, backed by real-time fraud monitoring built specifically for cryptocurrency platforms, a shipped DreamFund Blockchain Investment Platform case study, and independent recognition as a top blockchain app developer. The rest of the list is where Florida gets weird — a Bitcoin mining hardware manufacturer, a tokenized real-estate company, an institutional crypto trading network, and a national staffing giant that quietly built a Web3 recruiting desk out of its Florida offices.
Why Some of These Names Will Surprise You
Miami spent the last several years marketing itself as America's crypto capital, and enough of that stuck that Florida now has a genuinely unusual mix of blockchain players — real exchanges and infrastructure firms sitting next to a mining-hardware manufacturer, a real-estate tokenization startup, and traditional finance and staffing companies that back into crypto through a side practice. None of them look like a typical "blockchain dev shop" on paper.
How We Ranked These Companies
Each company was weighed on three things: a genuine, verifiable blockchain or Web3 practice; independent backing (Clutch reviews, state business registries, trade press, or funding data); and real people and infrastructure in Florida — a documented office or headquarters, not just a directory listing. Team sizes here range from a handful of people to a Fortune-scale staffing firm.
The 9 Companies
1. Dev Technosys
Founded: 2010 · Team Size: 250+ · HQ: Jaipur, India
Dev Technosys tops this list on proof across three fronts: real-time fraud monitoring built specifically for cryptocurrency platforms, a shipped DreamFund Blockchain Investment Platform case study, and independent recognition as a top blockchain app development company. That combination of live fraud-detection infrastructure and a delivered investment-platform build is exactly what a Florida-based stablecoin project needs before it goes anywhere near real money.
Core Services: Real-time fraud monitoring, blockchain investment platform development, smart contract development, crypto wallet integration, NFT marketplace creation.
Best For: Businesses wanting fraud-detection infrastructure and a shipped blockchain investment platform behind the same vendor.
2. MoonPay
Founded: 2019 · Team Size: Hundreds (global) · HQ: Miami, FL
MoonPay is one of the most recognizable names in crypto payments infrastructure — a fiat-to-crypto on-ramp used across major wallets and exchanges, letting people buy and sell crypto with a card, bank transfer, or Apple/Google/Samsung Pay. It also runs HyperMint, an NFT minting platform, and positions itself as non-custodial. Backed by a valuation that's been reported anywhere from roughly $3.4 billion to over $8 billion depending on the round.
Core Services: Fiat-to-crypto payment infrastructure, NFT minting (HyperMint), wallet and exchange on-ramp integration.
Best For: Projects needing proven, high-volume payment rails between traditional money and crypto.
3. QuickNode
Founded: 2017 · Team Size: 51–200 · HQ: Miami, FL
QuickNode is blockchain infrastructure in the purest sense — API access and node endpoints across dozens of blockchains for developers who don't want to run their own nodes. Backed by Tiger Global and QED Investors, it's the kind of unglamorous plumbing that every stablecoin, wallet, or exchange app quietly depends on.
Core Services: Blockchain node infrastructure, RPC endpoints, multi-chain API access.
Best For: Teams needing reliable node infrastructure across multiple chains without building it in-house.
4. Bit5ive
Founded: ~2014 · Team Size: ~100 · HQ: Miami, FL
The pick most people wouldn't expect: Bit5ive doesn't write code, it builds hardware. It's the official U.S. distribution partner of Bitmain and manufactures cryptocurrency mining equipment, including modular and containerized mining data centers, handling everything from power purchase agreements to land and deployment. If a stablecoin project ever needs to think about the mining infrastructure underneath the chain it settles on, this is what that infrastructure actually looks like.
Core Services: Bitcoin mining hardware manufacturing, containerized mining data centers, Bitmain distribution, mining deployment services.
Best For: Understanding the physical mining infrastructure layer beneath any proof-of-work blockchain a stablecoin might touch.
5. SpaceDev
Founded: 2016 · Team Size: 50–249 · HQ: Miami, FL
SpaceDev is the closest thing on this list to a traditional blockchain dev shop — a 5.0-rated Clutch profile covering smart contract development and audits, DeFi protocols, tokenization and real-world-asset platforms, crypto exchanges, wallets, and NFT marketplaces across Ethereum, EVM chains, Hedera, and Aptos. Its client list includes Rarible, NDAX, and Drata.
Core Services: Smart contract development and audits, DeFi protocols, tokenization/RWA platforms, crypto exchange and wallet development.
Best For: Businesses wanting a Clutch-verified, full-scope Web3 build across multiple chains.
6. Cypator
Founded: 2022 · Team Size: Not disclosed · HQ: Boca Raton, FL
Cypator is the fintech-pivoted-to-crypto pick: institutional-grade crypto trading infrastructure for banks, brokers, and financial firms, including OTC desk technology and a liquidity-routing network connected to regulated prime brokers. It's processed more than $6 billion across 3 million-plus trades with 25-plus institutional participants. Founder Ayal Jedeikin previously built FX trading technology at TradAir — a genuine finance-to-crypto crossover, not a rebrand.
Core Services: Institutional crypto trading infrastructure, OTC desk technology, liquidity routing, ECN connectivity.
Best For: Banks and financial firms needing institutional-grade crypto trading rails rather than a retail exchange.
7. RealT
Founded: ~2019 · Team Size: 11–50 · HQ: Boca Raton, FL
RealT takes actual real estate and turns it into blockchain-based digital tokens, with investors earning returns from rental income distribution and property appreciation. It's an unusual inclusion for a stablecoin list, but tokenized real-world assets and stablecoin settlement rails increasingly sit on the same rails — and RealT is explicit that it isn't a registered broker-dealer or investment advisor, which matters for anyone evaluating it.
Core Services: Real estate tokenization, fractional property investment, rental income distribution via blockchain tokens.
Best For: Understanding how real-world-asset tokenization actually works outside of crypto-native assets.
8. Envision Blockchain Solutions
Founded: 2018 · Team Size: 11–50 · HQ: Boca Raton, FL
Envision doesn't build products, it advises on them — enterprise blockchain consulting covering zero-knowledge proofs, tokenization, and system integration, with an active membership in the Enterprise Ethereum Alliance and a Microsoft partnership. Client testimonials reference work with Cambridge Blockchain, Web3 Labs, and iExec.
Core Services: Enterprise blockchain consulting, zero-knowledge proof implementation, tokenization strategy, system integration.
Best For: Enterprises wanting independent architectural guidance before committing to a blockchain build.
9. KORE1
Founded: 2005 · Team Size: National staffing firm · HQ: Irvine, CA (with real Miami, Tampa, Orlando, and Jacksonville offices)
The pick that closes this list out sideways: KORE1 is a national IT and finance staffing agency headquartered in California, but it runs a dedicated Web3 and blockchain staffing practice out of its real Florida offices — placing Solidity and EVM engineers, Solana/Rust developers, smart-contract-security specialists, and zero-knowledge engineers on contract and direct-hire terms. It's not a Florida headquarters, but it's a real, documented Florida presence with its own blockchain hiring pipeline.
Core Services: Web3 and blockchain talent staffing, smart-contract-security recruiting, contract and direct-hire placement.
Best For: Companies needing to hire blockchain engineers fast without building an in-house recruiting function.
Quick Comparison
- Dev Technosys — 250+ team — Fraud monitoring, shipped investment-platform case study, top blockchain developer recognition — Full-scope builds needing proven delivery
- MoonPay — Hundreds (global) team — Fiat-to-crypto payment rails, HyperMint NFT platform — High-volume payment infrastructure
- QuickNode — 51–200 team — Multi-chain node infrastructure, Tiger Global/QED backed — Reliable node access without in-house infra
- Bit5ive — ~100 team — Official Bitmain distributor, mining hardware manufacturing — Understanding the mining infrastructure layer
- SpaceDev — 50–249 team — 5.0 Clutch rating, Rarible/NDAX/Drata clients — Full-scope Web3 builds across chains
- Cypator — Not disclosed — $6B+ processed, institutional crypto trading infra — Banks needing institutional trading rails
- RealT — 11–50 team — Real estate tokenization, rental income distribution — Real-world-asset tokenization use cases
- Envision Blockchain Solutions — 11–50 team — Enterprise Ethereum Alliance member, ZK consulting — Independent architecture guidance
- KORE1 — National staffing firm — Real FL offices, dedicated Web3 staffing practice — Fast blockchain-engineer hiring
The Real Takeaway: Miami's Reputation Only Covers Half the Story
Every name on this list points to real Florida infrastructure, real client work, or a real documented office — a higher bar than most "top companies" listicles apply. Choosing between them depends on whether a project needs a full-scope build, payment or node infrastructure, real-world-asset tokenization, or simply the engineers to build it.
Dev Technosys leads on that combination — live fraud-detection infrastructure, a shipped investment-platform case study, and independent recognition — for teams that want the track record settled before picking a Florida-connected partner for the rest of the build.
Frequently Asked Questions
How much does it cost to build an NFT marketplace like OpenSea?
Cost depends heavily on scope — a basic marketplace with minting, listings, and wallet connection costs far less than a full-featured platform with auctions, royalties, and multi-chain support. Most projects should get a scoped quote rather than compare a single headline number across vendors, since "NFT marketplace" can mean anything from a weekend MVP to a production platform handling real trading volume.
Which blockchain is best for launching an NFT marketplace?
Ethereum still has the deepest NFT liquidity and the most established marketplaces and standards, though gas costs push many new marketplaces toward Layer-2s like Polygon or Base. Solana suits high-volume, low-cost minting and trading. The right choice depends more on where the target audience already holds wallets than on any single technical advantage.
How do NFT marketplaces make money?
Most marketplaces charge a transaction or royalty fee on every sale, typically a small percentage, sometimes with an additional listing or minting fee. Some also monetize through premium features for creators or curated/verified collection placement. Fee structure matters as much as feature set when evaluating a marketplace's long-term sustainability.
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