Smart Contracts Fueling eVow.io Platform

On-chain ROSCA savings club for Arbitrum and Base. Built-in defaulter insurance, NFT receipts with rotating artist/sponsor collections, and EIP-712 invite tickets for private tandas.

Decentralized Community Savings (ROSCA) built on Hedera – Xitique OnChain automates group contributions, penalties, and governance using smart contracts.

Open-source rotating savings group (Iqub/ROSCA) manager — Flutter + Firebase

OpenAjo documentation — rotating savings (ajo/esusu) protocol on Stellar

Soroban smart contracts for OpenAjo — rotating savings (ajo/esusu/adashe) circles on Stellar, with on-chain reputation

Digital infrastructure for Kenya's rotating credit associations (chamas/ROSCAs) — domain model, ledger, M-Pesa integration.

A secure Express.js backend for ROSCA management, built with MongoDB and Node. Provides RESTful APIs for groups, authentication with JWT, contributions, payouts, and cycle tracking. Ensures reliable data persistence and real-time synchronization with the React frontend in the MERN stack.

A modern web-based frontend for managing Rotating Savings and Credit Associations (ROSCA). Built with React, this application provides an intuitive interface for members to join groups, contribute funds, track payouts, and monitor cycles in real time.

Arisan (Indonesian ROSCA) where a Soroban smart contract holds the pool instead of a person. Prefunded, zero-residual, no admin. Rise In Green Belt, Stellar testnet.

Rotating savings circles (ajo/tanda/chama) as a Nimiq Pay mini app. Non-custodial, every payment verified on the Nimiq chain.

TypeScript SDK, event indexer + REST API, and Next.js web app for OpenAjo rotating savings circles on Stellar

An offline, no-login trust ledger for rotating savings groups (paluwagan / ROSCA / chit fund / tanda / susu). Your data never leaves your device.

CircleUp puts rotating savings clubs (Ajo, Esusu, Tanda, Chama) on Stellar Soroban. Members contribute each round; the contract auto-pays the recipient — no organizer can run off with the pot. Miss a round, lose collateral. Complete a circle, earn on-chain reputation.