Top Free Blockchain Platforms

How Many Blockchain Platforms Products Does G2 Track?

Total Products under this Category: 132

Category Stats (Sep 2026)

  • Average Rating: 4.19/5 The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: GetBlock (+3.63%) - Among all products in this category, GetBlock recorded the largest rating increase compared to last month

Last updated: September 29, 2026

How Does G2 Rank Blockchain Platforms Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 400+ Authentic Reviews
  • 132+ 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, Ethereum, IBM Blockchain Platform, 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=ethereum&focus%5B%5D=ibm-blockchain-platform&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: 8.3/10)
  • Ease of Use: 8.9/10 (Category avg: 8.5/10)

Who Is the Company Behind TransferChain?

  • Seller: TransferChain AG
  • Year Founded: 2020
  • HQ Location: Baar, Switzerland
  • Twitter: @TransferChain_
    860 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    21 employees on LinkedIn®

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 features of TransferChain, appreciating the peace of mind for sensitive file transfers.
  • Users appreciate the ease of use of TransferChain, enjoying its intuitive interface and seamless navigation for all.
  • Users appreciate the security focus of TransferChain, feeling secure with its zero-knowledge encryption for sensitive data.
  • Users love the secure storage of TransferChain, appreciating its zero-knowledge encryption and end-to-end protection for sensitive files.
  • Users commend the reliability of TransferChain, praising its fast loading and secure handling of sensitive data.
Cons
  • Users find the file size limitations of TransferChain frustrating, causing slow uploads and impacting overall efficiency.
  • Users find mobile app issues challenging, especially with integration on phones and older browsers, but hope for improvements.
  • Users find the security complexities of TransferChain overwhelming, making login and cloud creation confusing and frustrating.
  • Users find the insufficient information regarding file size limits frustrating for transferring larger files effectively.
  • Users experience a small learning curve with TransferChain initially, but it becomes more user-friendly over time.

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

Who Is the Company Behind Ethereum?

  • Seller: Ethereum Project
  • Year Founded: 2014
  • HQ Location: N/A
  • Twitter: @ethereumproject
    1,811 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    995 employees on LinkedIn®

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: 4.7/5.0

Total Reviews: 52

How Do G2 Users Rate Dfns?

  • Quality of Support: 9.7/10 (Category avg: 8.3/10)
  • Ease of Use: 8.7/10 (Category avg: 8.5/10)

Who Is the Company Behind Dfns?

  • Seller: Dfns
  • Company Website:
  • Year Founded: 2020
  • HQ Location: Paris, FR
  • Twitter: @dfnsHQ
    4,156 Twitter followers
  • 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: 85% Small, 12% Medium

What Do G2 Reviewers Say About Dfns?

AI-generated summary from verified user reviews

Pros
  • Users commend the responsive and knowledgeable customer support of Dfns, enhancing their integration experience significantly.
  • Users find Dfns easy to implement and use, with great support and ongoing improvements enhancing the experience.
  • Users value the comprehensive features of Dfns, appreciating the robust infrastructure and ongoing improvements.
  • Users value Dfns for its easy integrations, allowing for efficient project delivery and seamless functionality.
  • Users value the strong security features of Dfns, including built-in MPC wallets and key management systems.
Cons
  • Users find Dfns lacking in missing useful features that limit its flexibility and practical application.
  • Users find the complexity of the API and interface challenging, leading to a steep learning curve despite some improvements.
  • Users find the dashboard not very practical and note the need for more UX improvements for better experience.
  • Users find poor usability in Dfns, citing complex wallet management and unclear signing messages as major issues.
  • Users find the limited support for USDT restricts market operations and seek better blockchain integration.

What Are Recent G2 Reviews of Dfns?

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: 8.3/10)
  • 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
  • Twitter: @Kaleido_io
    4,561 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    77 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: 8.3/10)
  • Ease of Use: 9.6/10 (Category avg: 8.5/10)

Who Is the Company Behind GetBlock?

  • Seller: GetBlock
  • Year Founded: 2020
  • HQ Location: N/A
  • Twitter: @getblockio
    23,951 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    32 employees on LinkedIn®

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

Who Is the Company Behind Bitquery?

  • Seller: Bitquery
  • HQ Location: New York, US
  • Twitter: @Bitquery_io
    5,985 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    18 employees on LinkedIn®

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: 8.3/10)
  • Ease of Use: 9.0/10 (Category avg: 8.5/10)

Who Is the Company Behind Crypto APIs?

  • Seller: Crypto APIs
  • Year Founded: 2018
  • HQ Location: Delaware, Delaware
  • Twitter: @CryptoApis
    1,769 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    12 employees on LinkedIn®

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: 8.3/10)
  • 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: 8.3/10)
  • 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?

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: 8.3/10)
  • 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
  • Twitter: @nominisio
    2,181 Twitter followers
  • 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 appreciate the ease of use of Nominis Vue, simplifying detection of risky transactions and unusual wallet behavior.
  • Users appreciate the easy integrations in Nominis Vue, enhancing their ability to monitor and analyze data seamlessly.
  • Users value the real-time monitoring of Nominis Vue, making it easier to detect risky transactions efficiently.
Cons
  • Users find that the customer support response time of Nominis Vue is consistently slow, affecting their experience.

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