Celo

HelloBase App is a simple decentralized web application built on the Base blockchain, designed to demonstrate seamless interaction between smart contracts deployed via Remix IDE and wallets connected through WalletConnect SDK. The app allows users to: Connect their crypto wallet securely via WalletConnect Read onchain data (a “message”) from a deployed smart contract Update that data (write to the blockchain) directly from a web interface By combining Remix, WalletConnect, and Ethers.js,…

The ab-system is a full-stack, decentralized recognition platform designed to issue, manage, and verify on-chain digital credentials. It provides protocols, communities, and applications with the immutable infrastructure necessary to track, reward, and publicly display user accomplishments. By leveraging Foundry for secure, EVM-compatible contract logic and a dedicated TypeScript front-end, the project turns ephemeral user engagement into verifiable, tokenized reputation.

Farcaster MiniApp “2048” is an onchain version of the classic puzzle game, integrated directly into the Farcaster social ecosystem. The app features a leaderboard stored fully onchain, allowing players to compete transparently and verify their scores through smart contracts. The game already operates with offchain functionality, and Celo integration will enable the first blockchain-backed leaderboard with verifiable results.

CeloWork SDK is a drop-in toolkit for building decentralized freelance and gig marketplaces on Celo. It simplifies job posting, escrow management, milestone-based payouts, reputation tracking, and integration with Self Protocol for identity verification. With just a few lines of code, developers can launch trustless marketplaces, DAO workboards, or on-chain service platforms powered by Celo.

GenZ Token SDK is a Kenyan-built fintech and Web3 infrastructure that powers the in-game economy for local gaming companies. It introduces GENZ, a digital token pegged 1:1 to the Kenyan Shilling (KES), and provides a developer SDK and backend platform that enables seamless integration of KES-backed transactions into any game. The SDK allows studios to onboard players, handle deposits and redemptions through M-Pesa, and settle rewards instantly while maintaining real-time transparency on-chain.

ArriendaChain is a decentralized reputation and fair pricing protocol for the rental housing market in Colombia, built on Celo blockchain. We create transparent credit scores for tenants, landlords, and properties while preventing rent overpricing through verifiable market data and Colombian regulatory compliance (IPC-based increases, 1% monthly cap). Using cCOP stablecoin and Self's decentralized KYC, we eliminate intermediary fees (8-10% traditional vs 2-3% protocol), reduce fraud, and…

LOOSE is a decentralized peer-to-peer betting dapp built on CELO that eliminates intermediaries and makes betting transparent, fair, and accessible from any smartphone. It leverages CELO's native stablecoins (cUSD, cEUR) to offer betting without volatility, with near-zero gas fees and ~5-second confirmation times. Users can create sports bets, event predictions, and custom markets, all automatically executed through smart contracts.

Vibo is the ultimate hub for sparking tokenized communities on the Celo blockchain! Whether you're dreaming up a fan-driven economy or a collaborative adventure, Vibo simplifies token creation, fair airdrops with real-person verification, and social vibes that keep everyone hooked. Creators can spin up ERC-20 tokens, configure fair, Sybil-resistant airdrops (Fixed, Tapering, Lottery), and gather members in token-gated feeds—all without code. Identity is handled privately via Self Protocol…

zmen.us is a free-to-use digital e-menu platform that empowers small businesses to run self-service ordering with integrated local and crypto payment options. Designed for cafés, hawker stalls, and independent merchants, zmen.us simplifies the ordering experience—customers scan a QR code, browse the menu, place orders, and pay seamlessly using their preferred payment method, whether it’s a local wallet or crypto via Celo.

Web3 Trading Hub is a crypto analytics and education platform focused on simplifying institutional-level trading concepts for retail traders. It bridges the gap between professional market behavior and retail understanding through real-time insights, smart contract integrations, and automated data analysis.

HackerRep is a privacy-first reputation protocol for developers. It uses zero-knowledge proofs and Self Protocol’s onchain SDK deployed on Celo mainnet to create verifiable, sybil-resistant, and culturally intelligent identities. Developers can prove academic and professional credentials (via zkPDF) and demographics (via Aadhaar/Passport) without revealing sensitive data. Reputation is tied to ENS names and designed to be monetizable, making trust a tradable on-chain primitive.

Mavu is a blockchain-based microtask platform built on the Celo blockchain and Opera Minipay that allows users to do tasks for businesses around the world and earn stablecoins, at their fingertips.