Developers post live apps, integrations, or demos.

Ecosystem Showcase & Launches

Usually, my main focus is researching early-stage projects, looking for interesting cases, new narratives, and things that can offer real upside at an early stage.

But this time I wanted to dig a bit deeper into something else — not just Arc itself, but what the 

So I spent some time going through projects shared by builders and collected the ones that looked the most interesting to me.

What I liked is that this does not feel like the usual situation where every ecosystem produces the same copy-paste products with slightly different UI. There is already a pretty wide mix here: 

payments, privacy, DEXs, payroll, agentic commerce, treasury tools, games, and builder infrastructure

Fairsplit — confidential transfers on Arc


A payment tool on Arc that supports both regular and confidential transfers, hiding transaction details through privacy features. The project is focused on practical privacy UX for stablecoin transfers and is already preparing a v2 with updated interface and new features.

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/confidentiality-on-arc-gdv3bi98uf

Fivo — stablecoin payment gateway for online merchants


A payment gateway for online businesses that allows merchants to accept USDC and EURC through an embedded checkout widget without needing to build their own backend.

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/fivo-on-arc-stablecoin-payment-gateway-for-online-merchants-78kcjznv9e

Pix2Win — PIX-to-USDC payments for digital entrepreneurs


A payment solution that connects Brazil’s PIX system with USDC, allowing users to receive local payments and convert them into digital dollars.

https://community.arc.network/home/forum/boards/member-lounge-la1/posts/pix2win-turn-pix-payments-into-digital-dollars-dldavkfj5r

ArcGate — USDC on/off-ramp on Arc Testnet


An on/off-ramp product on Arc Testnet focused on making deposits and withdrawals feel cleaner and more transparent from a UX perspective.

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/arcgate-v2-rebuilt-from-scratch-hoz92wwbsd

Transvy Protocol — unified USDC balance across chains


A multichain payment layer designed to unify USDC balances across networks and simplify any-chain-to-any-chain transfers through Circle Gateway.

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/introducing-transvy-protocol-8xbccid9nw

Lunex Finance — native stablecoin DEX and yield layer for Arc

A stablecoin-focused DEX on Arc combining Curve-style swaps, LP infrastructure, ERC-4626 vaults, and CCTP bridge flow into one liquidity layer for USDC and EURC.
 

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/lunex-finance-the-native-stablecoin-dex-built-for-arc-network-3qsge6rzsl

Tower Exchange — AI-powered DEX aggregator for Arc


An AI-powered DEX aggregator that combines smart routing, analytics, and assistant-style interaction for a more intelligent trading experience on Arc.
 

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/reintroducing-tower-exchange-on-arc-hgmyenl0hg

ArcPerps — perp DEX for fast and frictionless trading


A perp DEX focused on speed, control, and a cleaner user experience for traders who want fast execution without extra friction.
 

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/built-a-perp-dex-on-the-arc-network-hk58knqgzp

Arcdex — stablecoin FX DEX with deterministic swaps


A non-custodial stablecoin FX DEX on Arc Testnet, where USDC and EURC can be swapped with deterministic pricing and without slippage-heavy UX.
 

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/introducing-arcdex-a-stablecoin-fx-dex-built-natively-on-arc-network-9y97p0xlur

Synthra — CEX-like DEX for real onchain trading


A DEX trying to deliver a more familiar centralized-exchange feel while keeping the core onchain and non-custodial.

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/project-synthra-on-arc-a-cex-like-dex-built-for-real-trading-9zgv9mxol5

AgentFlow — AI research pipeline with gasless USDC micropayments


A dApp on Arc testnet where AI agents complete research tasks and automatically receive USDC payments through Circle x402.


https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/agentflow-an-autonomous-ai-research-pipeline-with-gasless-usdc-micropayments-on-arc-testnet-bpfd39w7qw

YieldClaw — autonomous DeFi treasury agent


An autonomous DeFi agent on Arc that manages treasury yield in USDC by automating deposits, compounding, payment streams, and cross-chain yield routing.


https://community.arc.network/home/forum/boards/agentic-commerce-on-arc/posts/introducing-yieldclaw-our-autonomous-defi-agent-for-the-usdc-hackathon-lppcwhowa7

https://yieldclaw-production.up.railway.app

InferPay — pay-per-inference rail for the agent economy


An x402-powered payment proxy that lets agents pay for LLM inference in pay-per-request or pay-per-token format without subscriptions or API keys.
 

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/inferpay-pay-per-inference-for-the-agent-economy-x402-circle-nanopayments-on-arc-po4u6ynvxy

Arc Neural Agent — AI-powered assistant and terminal for Arc Testnet


An AI-powered dashboard that combines wallet actions, analytics, batch transfers, and terminal-style interaction inside a more immersive interface.

https://community.arc.network/home/forum/boards/member-lounge-la1/posts/arc-neural-agent-ai-powered-blockchain-companion-2rqli7yptz

RSoft Agentic Bank — autonomous banking infrastructure for AI agents


A financial layer for the agent economy on Arc, where AI agents get onchain identity, dynamic credit scoring, and programmable payment logic.

https://community.arc.network/home/forum/boards/agentic-commerce-on-arc/posts/rsoft-agentic-bank-building-the-financial-backbone-for-the-agentic-economy-zy5zeuxvse

ProofPay — onchain payroll app with work verification


A payroll app on Arc Testnet that allows employers to pay contributors in USDC or EURC after verifying actual work activity, currently through GitHub.


https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/introducing-proofpay-an-onchain-payroll-app-on-arc-testnet-woj20ytusc

ArcPay — USDC payroll tool for simple salary payouts


A minimal payroll tool on Arc Testnet for sending single or bulk USDC payouts without adding unnecessary smart-contract complexity.

https://community.arc.network/home/forum/boards/circle-products-and-developer-toolings-0iw/posts/i-built-arcpay-a-usdc-payroll-tool-on-arc-testnet-full-walkthrough-ko50ys2h1c

DripFlow Allowance — self-custody savings vault with gamified unlocks


A savings vault where users lock USDC and gradually release it over time, turning saving into a personal allowance system with streaks, XP, and badge-style progression.
 

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/dripflow-update-drip-allowances-usbqdk46hj

ArcForgeApp — builder workflow tool for Arc


A builder-focused tool designed to reduce friction and make development inside the Arc ecosystem faste and easier to navigate.
 

https://community.arc.network/home/forum/boards/circle-products-and-developer-toolings-0iw/posts/why-i-built-arcforgeapp-on-arc-network-as-an-early-builder-qhrupzpk88

ArcIndex — decentralized ETF vaults on Arc


A decentralized ETF-style vault protocol on Arc Testnet that allows users to enter a diversified basket of assets through a single receipt token.
 

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/arcindex-multi-asset-etf-vaults-on-arc-testnet-4bon7uy6v8

Meridian Finance × Firmata Protocol — treasury, payments, agents, and trust on Arc


A broader financial stack for businesses and autonomous agents covering yield vaults, streaming payments, treasury automation, and trust / settlement infrastructure.
 

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/meridian-finance-x-firmata-protocol-treasury-payments-agents-and-trust-live-on-arc-t5fbqybjqw

Prediction Markets / Gaming / Experimental Apps

AchMarket — fully onchain LMSR prediction market


A prediction market on Arc Testnet where pricing, trading, and settlement all happen onchain through an LMSR model.

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/introducing-achmarket-the-first-lmsr-based-prediction-market-on-arc-testnet-nzst6v35vw

Arc Vision — prediction market with virtual liquidity smoothing


A prediction market experimenting with virtual liquidity smoothing to make early-stage market behavior more stable and readable.

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/arc-vision-a-parimutuel-prediction-market-with-virtual-liquidity-smoothing-fon872f5mx

MagicPoker — poker with magic cards and USDC on Arc


A game on Arc where classic poker is mixed with magic cards that directly affect hands and player strategy.

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/magicpoker-on-arc-ed1868gs6r?focusVoter=true

ARCMAN: Final Settlement — educational arcade game about Arc and stablecoins


 A puzzle-style arcade game on Arc testnet designed to teach players about stablecoin mechanics and the Arc ecosystem through gameplay.
 

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/arcman-final-settlement-educational-arcade-game-rqexeviu3x

ARCHERMES — Web3 e-commerce MVP with onchain escrow


A marketplace MVP on Arc Testnet where buyer funds are held in escrow and only released to the seller after delivery confirmation.
 

https://community.arc.network/home/forum/boards/ecosystem-showcase-and-launches-pdq/posts/showcasing-archermes-a-web3-e-commerce-mvp-with-on-chain-escrow-on-arc-testnet-k475sufog2

https://archer-mes-vitrine-archermes-vitrin.vercel.app/

 is simple: the Arc community is already testing a much wider set of use cases than just basic ecosystem placeholders.

There are already people building around 

payments, privacy, trading infrastructure, agentic commerce, treasury automation, gaming, and builder tools

. Some of these projects are still rough, some are early, and some will probably never make it far — but that is completely normal at this stage.

What matters more is that the ecosystem already feels like a plac

e where people are actually trying things, shipping, and exploring product directions instead of just talking.

That alone makes it worth watching more closely. ❤️

A look at what the Arc community is already building

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