Open Source Alternatives to Circle of Games

High-performance blockchain powering decentralized applications and crypto projects.

Open source

Leading Web3 infrastructure firm specializing in protocol engineering, cross-chain interoperability, and Web3 gaming.

Open source · Self-hostable

Istanbul-based mobile game developer creating innovative casual games with a focus on social and puzzle mechanics.

Open source

A Web3 notification platform that helps users discover and claim unclaimed crypto airdrops.

Open source

A global leader in digital property rights for the metaverse and web3 gaming.

Open source

Web3 development tools and services for building blockchain applications.

Open source

A decentralized blockchain ecosystem powering a wide range of Web3 applications, including DeFi, gaming, and NFTs.

Open source · Self-hostable

eToro is a social investing platform enabling users to trade stocks, crypto, and ETFs, and copy top-performing investors.

Open source

A framework and platform for building and connecting blockchain networks, focusing on scalability and usability for Ethereum.

Open source

Leading blockchain developer platform providing infrastructure, APIs, and tools to build scalable Web3 applications.

Open source

A leading cryptocurrency exchange platform for buying, selling, storing, and managing digital assets securely.

Open source

Develops blockchain scaling solutions using STARK technology for Ethereum-secure, fast, and seamless user experiences.

Open source

Moon Active is a leading mobile game development company known for creating Coin Master, a highly popular game combining slot machine mechanics with village-building.

Open source

Blockchain infrastructure provider offering high-performance RPC nodes and developer tools for Web3 applications.

Open source

Indian online gaming company specializing in skill-based and casual games, leveraging AI and data science.

Open source

Blockchain data platform providing compliance, investigation, and risk management software for global institutions and governments.

Open source

Web3 infrastructure company building the Sui Layer 1 blockchain for high throughput and low-cost transactions.

Open source

A multi-chain crypto trading aggregator for NFTs, tokens, and other digital assets.

Open source

Open-source AI research lab training decentralized large language models on Solana blockchain

Open source · Self-hostable

Ethereum Layer 2 scaling solution using optimistic rollups to enable fast, low-cost transactions.

Open source

Blockchain security and auditing firm providing smart contract auditing, KYC, and security tools.

Open source

Decentralized, non-custodial staking protocol for Ethereum and other liquid staking tokens.

Open source

Extensible Message Transport Protocol for secure, decentralized, and identity-native messaging across Web3 applications.

Open source

Comprehensive Web3 development platform providing SDKs, smart contract tools, and wallet infrastructure for developers.

Open source

A collaborative platform for querying, visualizing, and sharing blockchain data using SQL.

Open source

High-performance blockchain for decentralized exchanges.

Open source

Building a high-performance, scalable blockchain with a novel execution environment.

Open source

Layer 2 scaling solution for Ethereum using optimistic rollups to increase speed and reduce fees.

Open source

A decentralized protocol for lending and borrowing cryptocurrencies.

Open source

Leading interoperability platform enabling secure cross-chain messaging and asset transfers across multiple blockchain networks.

Open source

A humanity verification project and financial network providing anonymous proof of personhood for AI.

Open source

Building the world's first decentralized AI operating system for scalable, verifiable, and open AI.

Open source

Scalable blockchain platform for user-friendly decentralized applications.

Open source

Interoperability solutions for tokenized assets, enabling secure and regulated digital securities trading.

Open source · Self-hostable

Web3 growth suite for targeted user acquisition on social and web channels.

Open source

A decentralized autonomous organization managing the Dai stablecoin and the Maker Protocol on Ethereum.

Open source

Decentralized cloud marketplace for compute resources, leveraging blockchain technology (DePIN).

Open source · Self-hostable

BitPay is a cryptocurrency payment service provider facilitating transactions for businesses and individuals.

Open source

Non-profit organization supporting the development and adoption of the Solana blockchain.

Open source · Self-hostable

Leading provider of crypto financial intelligence, offering network data, market data, and risk solutions.

Open source

Decentralized interoperability platform providing secure cross-chain communication and asset transfers for Web3 applications.

Open source

Ignite provides an innovation platform and CLI tool for accelerating blockchain development.

Open source

A modular blockchain network.

Open source

A secure, scalable, and sustainable proof-of-stake blockchain platform for decentralized applications and smart contracts.

Open source · Self-hostable

Cross-chain aggregation protocol for bridging and swapping assets across blockchains.

Open source

Enterprise-grade platform providing APIs for blockchain wallets, payments, tokenization, and AI agent commerce.

Open source

Mobile-first blockchain platform.

Open source

Self-custodial key management and white-label wallets for platforms integrating Web3.

Open source

Web3 infrastructure data provider focused on validator and node operator ratings.

Open source

Modular interoperability protocol for building crosschain applications and deploying crosschain-native tokens.

Open source

Bridging the gap between tokenization and Wall Street.

Open source

Leading provider of security products and audits for building and operating decentralized blockchain applications.

Open source

Decentralized communication protocol for Web3 enabling cross-chain notifications, messaging, and chat for dapps.

Open source

Blockchain fintech provider for sports and entertainment, powering the Socios.com fan engagement platform.

Open source

Building a satellite-based network for secure blockchain and cryptographic computing beyond Earth.

Open source

End-to-end cybersecurity solutions for the Web3 ecosystem.

Open source

Decentralized naming system for the Ethereum blockchain, mapping human-readable names to Ethereum addresses and Web3 resources.

Open source

Confidential blockchain powered by fully homomorphic encryption for encrypted smart contracts and computation.

Open source

An indexing protocol for querying blockchain data, enabling developers to easily access and organize information from decentralized networks.

Open source

A decentralized storage network incentivizing users to lease hard drive space.

Open source