Top Free Blockchain Platforms

How Many Blockchain Platforms Products Does G2 Track?

Total Products under this Category: 161

Category Stats (Nov 2026)

  • Average Rating: 4.23/5 (↑0.04 vs Oct 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Dfns (+0.78%) - Among all products in this category, Dfns recorded the largest rating increase compared to last month

Last updated: November 10, 2026

How Does G2 Rank Blockchain Platforms Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 500+ Authentic Reviews
  • 161+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for Blockchain Platforms

G2 Grid® for Blockchain Platforms plotting products by satisfaction and market presence

Highlighted products: POK - Proof of Knowledge, TransferChain, IBM Blockchain Platform, Ethereum, Coinbase Institutional, Dfns, Azure Web3 Developer Solutions, and Blockstream.

Underlying data: [Grid® JSON](https://www.g2.com/categories/blockchain-platforms/grids.json?focus%5B%5D=pok-proof-of-knowledge&focus%5B%5D=transferchain&focus%5B%5D=ibm-blockchain-platform&focus%5B%5D=ethereum&focus%5B%5D=coinbase-institutional&focus%5B%5D=dfns&focus%5B%5D=azure-web3-developer-solutions&focus%5B%5D=blockstream)

TransferChain

TransferChain provides the safest cloud storage, file transfer, and file request capabilities for businesses - through zero-knowledge encryption, file splitting, distributed cloud architectures, and blockchain authorization. Neither TransferChain nor any unauthorized third parties, be it potential bad actors or data centers, can access the user’s private and confidential information. TransferChain is the most secure and private way to store your sensitive documents and share them externally.

Average Rating: 4.7/5.0

Total Reviews: 29

How Do G2 Users Rate TransferChain?

  • Quality of Support: 8.9/10 (Category avg: 8.4/10)
  • Ease of Use: 8.9/10 (Category avg: 8.5/10)

Who Is the Company Behind TransferChain?

Who Uses This Product?

  • Company Size: 86% Small, 3% Medium

What Do G2 Reviewers Say About TransferChain?

AI-generated summary from verified user reviews

Pros
  • Users value the exceptional security of TransferChain, feeling confident in their data protection and privacy online.
  • Users appreciate the ease of use of TransferChain, praising its straightforward setup and intuitive interface.
  • Users value the trustless design and strong security of TransferChain, enhancing their confidence in password storage.
  • Users value the top-notch security of TransferChain, feeling safe and trusting in its reliable design and features.
  • Users find TransferChain's reliability exceptional, transforming their workflow and enhancing security for sensitive data management.
Cons
  • Users report file size limitations with TransferChain, causing slow uploads and hindering efficiency during use.
  • Users face mobile app issues, expressing challenges with integration and functionality on phones and older browsers.
  • Users find the security features overwhelming and face issues with slow uploads and confusing login processes.
  • Users find the insufficient information on file size limitations frustrating, especially for transferring large files like 4K videos.
  • Users experience a small learning curve with TransferChain, but find it user-friendly after familiarization.

What Are Recent G2 Reviews of TransferChain?

Ethereum

Ethereum is a platform and a programming language that makes it possible for any developer to build and publish next-generation decentralized applications.

Average Rating: 4.3/5.0

Total Reviews: 36

How Do G2 Users Rate Ethereum?

  • Quality of Support: 6.8/10 (Category avg: 8.4/10)
  • Ease of Use: 8.4/10 (Category avg: 8.5/10)

Who Is the Company Behind Ethereum?

Who Uses This Product?

  • Top Industries: Computer Software
  • Company Size: 78% Small, 20% Medium

What Are Recent G2 Reviews of Ethereum?

What Are G2 Users Discussing About Ethereum?

Dfns

DFNS is a core banking platform for digital assets. It gives banks, fintechs, and enterprises the infrastructure to run financial operations and build products onchain, provisioning wallets, securing keys, governing transactions, and servicing tokenized assets across blockchains, the way a traditional core banking system underpins accounts, payments, and ledgers in conventional finance. The platform addresses a structural gap. The core systems financial institutions run today were not built for assets that settle in seconds, on public networks, with cryptographic ownership. Rather than replacing an organization's existing core banking system, hardware security modules, or compliance stack, DFNS provides the layer that lets those systems operate onchain. It is delivered as composable modules through one REST API and SDKs, so an organization can adopt a single capability or the full platform, and it connects to more than 100 blockchains and third party services through a single integration surface. Over 500 institutional and fintech clients run on DFNS, including Standard Chartered, First Abu Dhabi Bank, IBM, Stripe, Circle, Thunes, and Broadridge. Roughly 1% of all global stablecoin payment volume settles through the platform. DFNS is used across digital asset custody, banking, embedded wallets, stablecoin payments, trading operations, tokenization, and treasury and asset management. The platform is organized into modules, including: 1. Wallet-as-a-Service — create, index, and manage wallets across 100+ blockchains and third party services, as one account layer for custody, payments, trading, treasury, and tokenization. 2. Transaction Management — format, approve, decode, simulate, sign, broadcast, and track transactions at scale, built for high volume flows and complex approval logic. 3. Treasury Management and Tokenization Engine — manage onchain treasury across entities, currencies, and networks, and issue and service tokenized assets across their full lifecycle. 4. Policy Engine and Governance Engine — enforce limits, allowlists, quorums, roles, and ABI aware approvals before every signature, and cryptographically verify every intent, policy, and signature against a state the customer controls, deployed within their own perimeter. 5. Key Management — run keys across MPC, HSM, TEE, or BYOK models, with production grade protocols built for resilience, scale, and no single point of failure. A defining characteristic is that authentication and transaction signing are handled as separate functions, and policies are evaluated before any signature is produced, giving organizations programmable control over who can move which assets, under what conditions. Keys are operated so that a complete private key is never assembled in one place. DFNS can be deployed as managed SaaS, hybrid, or fully on premises. The deployment model changes while the modules and controls stay the same, allowing key material and infrastructure to be placed according to regulatory and operational requirements. It integrates with existing systems including core banking platforms, custody and compliance tooling, and payment rails, and organizations typically adopt it to add digital asset capabilities to existing products, to meet requirements under frameworks such as GENIUS, MiCAR, and DORA, or to consolidate wallet, transaction, governance, and settlement operations onto one platform.

Average Rating: 4.8/5.0

Total Reviews: 70

How Do G2 Users Rate Dfns?

  • Quality of Support: 9.6/10 (Category avg: 8.4/10)
  • Ease of Use: 8.8/10 (Category avg: 8.5/10)

Who Is the Company Behind Dfns?

  • Seller: Dfns
  • Company Website:
  • Year Founded: 2020
  • HQ Location: Paris, FR
  • LinkedIn® Page: linkedin.com
    86 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: CEO
  • Top Industries: Financial Services, Information Technology and Services
  • Company Size: 86% Small, 11% Medium

What Do G2 Reviewers Say About Dfns?

AI-generated summary from verified user reviews

Pros
  • Users commend Dfns for its fast and helpful customer support, enhancing their overall experience and confidence in the service.
  • Users appreciate the ease of use of Dfns, highlighting its intuitive interface and straightforward integration process.
  • Users appreciate the comprehensive features of Dfns, particularly the robust wallet infrastructure and valuable integrations.
  • Users value Dfns for its easy integrations, allowing for seamless project deliveries and efficient third-party collaborations.
  • Users commend Dfns for its robust security features, particularly around MPC wallets and evolving security standards.
Cons
  • Users highlight the missing features in Dfns, desiring better APIs and user-friendly solutions for enhanced functionality.
  • Users face a complexity in the API that results in a steep learning curve and can hinder usability.
  • Users find the dashboard impractical and note issues with APIs and overall user experience due to high security.
  • Users face poor usability with Dfns, struggling to understand MPC messages and navigate complex wallet management.
  • Users often face integration issues with Dfns, particularly related to limited support for USDT and blockchain compatibility.

What Are Recent G2 Reviews of Dfns?

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Kaleido

Kaleido is the award-winning, enterprise-grade platform making blockchain and digital assets radically simple for organizations to adopt. Kaleido provides a complete stack for building blockchain-based digital asset and tokenization solutions across public and private chains on protocols including Ethereum, Polygon, Avalanche, Hyperledger Fabric, Quorum, Hyperledger Besu and Corda. All protocol options offer support for Hyperledger FireFly, the industry's first open source web3 gateway. Not only that, Kaleido provides security, compliance, and scalability to meet the most stringent enterprise requirements within highly regulated industries. Kaleido's platform is ISO27K and SOC 2 Type 2 certified with built-in high availability and disaster recovery, achieving 99.99% uptime over the past 4 years. That's why companies from web3 startups to leading global enterprises are in production today on Kaleido, accelerating the digitization of their critical business processes and the adoption of digital asset technologies across industries as varied as Finance, Healthcare, Insurance, Supply Chains, Gaming, Media, Entertainment, ESG, the Public Sector, and more.

Average Rating: 4.8/5.0

Total Reviews: 24

How Do G2 Users Rate Kaleido?

  • Quality of Support: 9.4/10 (Category avg: 8.4/10)
  • Ease of Use: 9.2/10 (Category avg: 8.5/10)

Who Is the Company Behind Kaleido?

  • Seller: Kaleido
  • Year Founded: 2017
  • HQ Location: Raleigh, North Carolina
  • LinkedIn® Page: www.linkedin.com
    80 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 58% Small, 33% Large

What Are Recent G2 Reviews of Kaleido?

GetBlock

GetBlock is an RPC node provider and infrastructure platform for Web3 and AI. – 130+ blockchain networks supported – JSON-RPC, WebSockets, and gRPC (for Solana, Sui, Tron) – Shared and dedicated solutions with free and paid plans – Advanced Solana stack: accelerated transaction landing, shreds streaming, SWQoS, indexed archival data – MEV protection for all Tier 1 blockchains (included in free plans) – KYC/AML API stack: Token Insights API, Token Risks API, AML checker – Tron Energy service

Average Rating: 3.8/5.0

Total Reviews: 10

How Do G2 Users Rate GetBlock?

  • Quality of Support: 9.2/10 (Category avg: 8.4/10)
  • Ease of Use: 9.6/10 (Category avg: 8.5/10)

Who Is the Company Behind GetBlock?

Who Uses This Product?

  • Company Size: 92% Small, 25% Medium

What Are Recent G2 Reviews of GetBlock?

What Are G2 Users Discussing About GetBlock?

Bitquery

Bitquery provides indexed blockchain data for over 40 blockchains, giving users access to +historical and real-time data through Graphql APIs. The data includes information on token trades, transfers, holders, transactions, address balances, smart contract events, calls, NFT trades, transfers, and other related details.

Average Rating: 4.6/5.0

Total Reviews: 5

How Do G2 Users Rate Bitquery?

  • Quality of Support: 9.2/10 (Category avg: 8.4/10)
  • Ease of Use: 8.3/10 (Category avg: 8.5/10)

Who Is the Company Behind Bitquery?

Who Uses This Product?

  • Company Size: 80% Small, 20% Medium

What Are Recent G2 Reviews of Bitquery?

Crypto APIs

Crypto APIs offers scalable Web 3 infrastructure for crypto and blockchain applications. Its product suite includes Wallet as a Service, Blockchain Events, Blockchain Data, Blockchain Automations, Blockchain Tools, and Market Data. The company’s REST APIs support multiple blockchains and token standards. The benefits of Crypto APIs include: - Seamless one-time integration (over 100 unified endpoints); - Streamlined and lightweight performance (25ms avg. processing time); - Advanced cryptographic security (ISO/IEC 27001:2013 certified). Crypto APIs is the infrastructure layer behind crypto wallets, custodians, exchanges, lending products, accounting tools, and other blockchain applications. It is trusted by dev. teams at Chainlink, Ledger, Nexo, PayPal, Prime Trust, and Rakuten Blockchain Labs. Crypto APIs’ subscription plans are based on usage, including number of wallet addresses, event subscriptions, and automations. A free plan is available for testing over unlimited time.

Average Rating: 4.4/5.0

Total Reviews: 18

How Do G2 Users Rate Crypto APIs?

  • Quality of Support: 8.5/10 (Category avg: 8.4/10)
  • Ease of Use: 9.0/10 (Category avg: 8.5/10)

Who Is the Company Behind Crypto APIs?

Who Uses This Product?

  • Top Industries: Computer Software
  • Company Size: 72% Small, 22% Medium

What Are Recent G2 Reviews of Crypto APIs?

Tatum

Tatum is a blockchain development platform that provides fast, reliable RPC gateways to 100+ networks. Tatum RPC endpoints feature failovers, geo and load balancing, and data caching for ultimate efficiency, ensuring developers and enterprises can run Web3 applications with confidence affordably. On top of its RPC data layer, Tatum also provides convenient blockchain APIs and blockchain webhook notifications, simplifying blockchain integration and accelerating development.

Average Rating: 4.5/5.0

Total Reviews: 5

How Do G2 Users Rate Tatum?

  • Quality of Support: 10.0/10 (Category avg: 8.4/10)
  • Ease of Use: 9.2/10 (Category avg: 8.5/10)

Who Is the Company Behind Tatum?

  • Seller: Tatum
  • Year Founded: 2017
  • HQ Location: Miami, FL, US
  • LinkedIn® Page: www.linkedin.com
    75 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 80% Small, 20% Medium

What Are Recent G2 Reviews of Tatum?

JSON-RPC Node API

Anyblock’s Software-as-a-Service (SaaS) provides Blockchain RPC Access for Bitcoin, Ethereum & many more blockchains. We provide a fast and reliable blockchain API, query time is usually less than 100 ms. Load-balanced with multiple nodes. Parity/OpenEthereum & Besu clients for Ethereum. Amazing support. Quick and personal responses. Technical advice with code samples. Extensive documentation: API, tutorials, FAQs, …

Average Rating: 4.5/5.0

Total Reviews: 2

How Do G2 Users Rate JSON-RPC Node API?

  • Ease of Use: 8.3/10 (Category avg: 8.5/10)

Who Is the Company Behind JSON-RPC Node API?

Who Uses This Product?

  • Company Size: 50% Small

What Are Recent G2 Reviews of JSON-RPC Node API?

What Are G2 Users Discussing About JSON-RPC Node API?

Xooa

Xooa empowers users of all blockchain expertise levels to build NFT marketplaces and other blockchain apps on the cloud fast through a streamlined and easy-to-use interface. Take advantage of Xooa's low code tools, API gateway, and many other powerful features to generate up to a 10x faster time-to-app and a 95% shorter learning curve. White-Label Marketplace: Key Features and Capabilities Deploy a ready-to-use, end-to-end marketplace in just 45 seconds Appeal to crypto and mainstream audiences with fiat + crypto payments and custodial + non-custodial wallets Use low code tools like drag-and-drop forms and definable roles to customize your marketplace UX Payment management and compliance built-in

Average Rating: 4.8/5.0

Total Reviews: 2

How Do G2 Users Rate Xooa?

  • Quality of Support: 8.3/10 (Category avg: 8.4/10)
  • Ease of Use: 10.0/10 (Category avg: 8.5/10)

Who Is the Company Behind Xooa?

  • Seller: Xooa
  • Year Founded: 2017
  • HQ Location: Dover, US
  • LinkedIn® Page: www.linkedin.com
    4 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 50% Small, 50% Medium

What Are Recent G2 Reviews of Xooa?

What Are G2 Users Discussing About Xooa?

MARK Studio

MARK Studio is a ready-to-use system that helps institutions issue Verifiable Credentials without significantly altering their existing processes. A university, training department, or government agency can upload its current certificate format to MARK Studio, and the platform automatically adds a cryptographic signature and generates a secure, verifiable digital version. Each certificate includes a QR code for instant online verification. MARK Studio is designed to work seamlessly with government departments. Built on open standards, it ensures certificates issued today can be verified anywhere in the future. It respects privacy; no personal data is stored on the blockchain. It integrates smoothly with existing databases, making it easy for departments to adopt without needing major IT overhauls. Most importantly, it is entirely developed in India—aligned with the country’s vision of secure, sovereign digital infrastructure. For states working to create more efficient education systems, employment programs, and transparent governance, Verifiable Credentials can serve as  - A foundational tool. - A digital education certificate system  - Support youth employment missions - Streamline government recruitments   - Boost trust in public services.  It can help the state demonstrate leadership in digital governance and become a model for other regions.- rewrite it as a concept note placed with the quote

Who Is the Company Behind MARK Studio?

Nominis Vue

NOMINIS: Crypto Compliance, KYT, and Forensic Intelligence in One Platform NOMINIS is an AI-powered crypto compliance and blockchain intelligence platform built for Virtual Asset Service Providers (VASPs), exchanges, crypto fintechs, and law enforcement agencies that need enterprise-grade transaction monitoring without enterprise-level complexity or cost. The platform consolidates wallet screening, Know Your Transaction (KYT), forensic investigation, and crypto intelligence into a single workspace, giving compliance teams everything required to detect illicit activity, prevent sanctions exposure, and meet AML/CTF obligations across 70+ blockchains. What sets NOMINIS apart is its multi-source intelligence approach. Most legacy tools rely primarily on source-of-funds analysis. NOMINIS combines on-chain transaction data with off-chain signals from dark web, deep web, OSINT, SOCMINT, and HUMINT sources, then layers behavioral analytics on top. The result is deeper contextual risk scoring and the ability to attribute wallets even when verified sources are limited. The company maintains one of the largest crypto terror-financing databases in the industry and has been credited with helping flag over $10 billion in illicit crypto activity. Core capabilities include: Wallet Screening: Pre-transaction risk assessment for inbound deposits, onboarding addresses, and counterparties, with exposure checks against mixers, sanctioned entities, and fraud clusters. Know Your Transaction (KYT): Continuous monitoring across 70+ blockchains with real-time alerts on suspicious flows, rapid chain hops, mixer interactions, and laundering typologies. Forensic Tools: Wallet graph exploration, money flow tracing, case files, and evidence exports for investigators and law enforcement. AsKYT, Intelligence as a Service, and Research: Custom investigations and crypto intelligence delivered by NOMINIS analysts. The platform is built for global regulatory readiness, with coverage aligned to FATF, MiCA, FinCEN, FINTRAC, VARA, ADGM, and AMLD5 frameworks. Compliance officers can adjust risk scoring rules without engineering involvement, manage cases end-to-end, and export defensible reports for regulators, auditors, or LEAs. API and UI access are included on every plan, and the system supports automated or manual responses (block, flag, escalate) with full audit trails. Pricing is transparent and volume-based, starting at $350/month for Starter (350 checks) and scaling through Growth and Growth+ tiers up to fully custom enterprise deployments. Annual billing offers meaningful discounts, there are no implementation fees, overage is billed at a published per-call rate, and a 7-day free trial is available with no credit card required. NOMINIS positions itself as a focused alternative to legacy KYT tools for VASPs that need accurate, defensible risk screening and investigations without the cost or complexity of forensic-grade tooling they don't actually need.

Average Rating: 2.5/5.0

Total Reviews: 1

How Do G2 Users Rate Nominis Vue?

  • Quality of Support: 3.3/10 (Category avg: 8.4/10)
  • Ease of Use: 5.0/10 (Category avg: 8.5/10)

Who Is the Company Behind Nominis Vue?

  • Seller: Nominis
  • Year Founded: 2023
  • HQ Location: Tel Aviv, IL
  • LinkedIn® Page: www.linkedin.com
    15 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Large

What Do G2 Reviewers Say About Nominis Vue?

AI-generated summary from verified user reviews

Pros
  • Users find Nominis Vue's ease of use great for navigating and detecting unusual wallet behaviors effortlessly.
  • Users appreciate the easy integrations of Nominis Vue, enhancing their ability to monitor blockchain activity effectively.
  • Users value the real-time monitoring capabilities of Nominis Vue for effectively spotting risky transactions effortlessly.
Cons
  • Users frequently experience poor customer support, as responses to queries are often slow and frustrating.

Ocyan

Ocyan enables the disruption of traditional industries with emerging technologies. Providing an end-to-end Cloud Operating System for enterprise blockchains is only the beginning.

Who Is the Company Behind Ocyan?

Originary

Originary builds infrastructure rails and tools for the agentic web, solving Access, Attribution, Consent, Commerce, Compliance, Privacy, and Provenance. Originary provides the settlement layer for the Agentic Web. We transform the internet from a library of free content into a marketplace of verifiable, machine-payable assets.

Who Is the Company Behind Originary?

  • Seller: Poem
  • Year Founded: 2025
  • HQ Location: Dover, US
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®
Brandon Summers-Miller
BS
Researched and written by Brandon Summers-Miller
Updated October 3, 2024