Logo

Open House Archive

Welcome to the Open House Archive - your central repository for accessing all previous Open House buildathons and projects.

projects-banner

All Projects

By ProjectBy Buildathon
Learn
  • Explore Course
Build
  • Explore Buildathon
  • Project Archive

Project Highlight

Project Highlight

EduBricks

EduBricks is a platform enabling fractional ownership of tokenized real estate, making investments more accessible

Champion

7th Place

Arbitrum X EDU Chain Mini-Hack

Pencil Finance

Bringing $3 Trillion in Student Loans On-Chain

Champion

1st Place

Arbitrum X EDU Chain Mini-Hack

Stylish Course to Stylus Smart Contract Development

A comprehensive course on deploying and interacting with Stylus smart contracts on Arbitrum and EDU Chain, featuring a full-fledged Stylus IDE for seamless deployment and interaction.

Champion

First Prize

Arbitrum X EDU Chain Mini-Hack

VineFinance

Vine Finance is a decentralized, modular revenue strategy protocol.

Champion

Third Prize

Arbitrum X EDU Chain Mini-Hack

Orbital

A next-gen AMM that supports 2, 3, or even 10,000 stablecoins in a single pool, scaling concentrated liquidity into higher dimensions.

+1
Champion

Second prize

Arbitrum Open House India: Online Buildathon

zkArb SDK

zkArb SDK is a developer toolkit that makes building zero-knowledge apps on Arbitrum simple and fast. It provides plug-and-play Circom circuit compilation, proof generation, and ready-to-deploy verifier contracts, so developers can focus on dApps instead of cryptography.

Champion

Honorable Surprise Mention

Arbitrum Open House India: Online Buildathon

Builder Highlight

Most Hackathon Won

Most Project Built

Builder Highlight

Most Buildathon Won
M

Manobendra Mandal

Kolkata, India
Champion
3
No.1
V

Vivek Sahu

India
Champion
2
No.2
s

simp1e

china
Champion
2
No.3
Most Project Built
M

Manjeet Sharma

india
Champion
16
No.1
R

Rick

California
Champion
16
No.2
D

DHRUV PANCHOLI

jaipur
Champion
15
No.3

DKEY

a p2p marketplace for files

Tech StackSolidity, Node, viem, Web3, Ethers, IPFS, Circom
Builder
Nnoad
DeFiSocialFiOther

FlowForge

Personal AI DeFi agent: one place to design, deploy, and execute intelligent on-chain workflows through natural language.

Tech StackReact, Next, Web3, Ethers, Node, Solidity
Builder
00x5kyguy
DeFiAI

Impulse (Connect social causes with Crypto)

Impulse was born from a simple idea: anyone should be able to change the world with a single tap. Our mobile app connects people with social causes they care about and allows them to support those initiatives using crypto — instantly, transparently, and without intermediaries. Whether it's helping families, rescuing animals, protecting the environment, or improving local communities, Impulse gives everyone the power to take action and create real impact. Because small contributions, when combined, can transform entire communities.

Tech StackSolidity, Flutter, Firebase
Builder
JJulioce98
SocialFi

FLIBBER

Flibber is the world’s first scam-resistant DeFi ecosystem that fixes three massive pain points in decentralized finance: inefficient bridging, scam-heavy fiat on/off-ramps, and low-quality NFT floods

Tech StackReact, Web3, Solidity, Rust
Builder
XXBT
InfraDeFiAINFT

Payrium Wallet

Payrium is building a utility-first wallet with token-gated governance (DAO), designed for everyday users and long-term community ownership.

Tech StackWeb3, Solidity, React, Ethers, DAO backend, Voting, Encryption
Builder
PPetro Smahliuk
DeFiDAO

DotPay

We make Crypto and Stablecoins spendable in emerging markets (Starting with Kenya), directly from Arbitrum, without forcing users to cash out first.

Tech StackReact, Next, Ethers, Node
Builder
NNashons Agate
DeFi

Payo

Send crypto to Telegram users who've never touched a wallet.

Tech StackReact, Next, Web3, Ethers, Node, Rust
Builder
MMuhammad Ramadhani
SocialFiDeFi

PulseAid

PulseAid is a decentralized charity platform on Arbitrum that uses zero-knowledge proofs for private institution verification, economic staking to prevent fraud, and smart contract escrow to secure donations. Institutions stake funds, raise money transparently, and submit proof of impact before receiving funds. Donors track every dollar through 6 transparency layers and see exactly where their money goes. With optimistic governance, automatic proof validation, and near-zero fees (~0.1%), PulseAid makes charity transparent, efficient, and unstoppable - ensuring donations reach those who need them most.

Tech StackNext, Solidity, Web3
Builder
PPrecious Jeremy
DAOSocialFi

Kustodia

Programable agentic friendly trust

Tech StackReact, Next, Web3, Ethers, Solidity
Builder
Rrodrigo
DeFiInfraAI

BlockOPs

BlockOps - A no-code AI-powered platform for building and deploying blockchain agents on Arbitrum. Users can create workflows via drag-and-drop or natural language (using AI) and automate transfers using Arbitrum Stylus smart contracts.

Tech StackNext, React, Rust, Node, stylus, Python
Builder
RRohan
AIDeFiInfra

PingPay

PingPay: AI-native money app on Arbitrum. Pay, Sweep, or Invest — all from chat.

Tech StackNext, Node, Solidity, Python, React, Ethers, SQLite
Builder
BBanks
DeFiAISocialFi

Numo

Numo is an onchain repo market for tokenized treasuries for which traders can borrow at a fixed rate against in FX stablecoins. This is a first step to building an onchain fixed income markets for global FX.

Tech StackSolidity, Next
Builder
Rrobertleifke
DeFi
  • Previous
  • 1
  • More pages
  • 26
  • 27
  • 28
  • More pages
  • 64
  • Next