Crypto & Web3 Startups

Shell Protocol is a DeFi platform that lets users bridge, swap, and provide liquidity in a single transaction across integrated protocols such as Curve, Balancer, and Uniswap. It provides developers a base layer for composable smart contracts to build interoperable dapps, with governance run by the Shell DAO via veSHELL holders.

1 investor

Shib.io is the web portal for the Shiba Inu crypto ecosystem, providing access to DeFi services, the Shibarium blockchain, a DappStore, tokens, and a naming service (SNS) for registering *shib domains.

1 investor

Shield3 provides proactive security services for Web3, including adversarial threat modeling, incident response planning, tabletop exercises, live testnet drills, and multisig audits. It serves crypto protocols (DeFi, L1/L2 chains, bridges, liquid staking, infrastructure) as well as institutions such as funds, banks, stablecoin issuers, regulators, and legal teams.

1 investor

Shieldeum offers a privacy-first VPN combined with threat detection that encrypts connections, hides IP addresses, and warns against phishing, scam sites, and risky smart contract or wallet interactions. It targets both everyday Web2 internet users and Web3 users interacting with decentralized apps and crypto wallets.

1 investor

Shiga provides a blockchain-based platform for converting multichain stablecoins into local fiat currencies, offering payments rails, and decentralized banking wallets. It serves both individuals and businesses, with dedicated support for Pan-African trade, and operates as a fintech with VASP licensing in the EU.

1 investor

Shipyard Software builds decentralized exchange (DEX) products, drawing on academic research in automated market making. The company operates in the crypto and decentralized finance space.

1 investor

Showdown is an online poker game that adds action cards and blends mechanics from competitive card games, letting players compete for real-money stakes in rank-based matches. It uses smart contracts and a Privy self-custody wallet for settlements, and offers free play with loyalty rewards, with launches planned on Steam and mobile.

1 investor

ShuttleOne offers a generative predictive finance system that connects professional fund managers with capital demand it underwrites, using a chat-based interface for borrowers and financiers to settle loans and repayments. It focuses on structured and asset-backed finance, aiming to reduce underwriting costs for liquidity providers.

1 investor

Shyft provides low-latency Solana blockchain infrastructure, including RPC nodes and real-time transaction streaming via gRPC and its RabbitStream service that detects unconfirmed transactions from Solana shreds. It targets blockchain developers building on Solana, offering multi-region failover nodes across the US, Europe, and Asia.

1 investor

Signum Capital is a licensed fund management company investing in blockchain and cryptocurrency infrastructure startups. It manages two active funds focused on high-quality crypto infrastructure and blockchain innovation globally.

1 investor

Silencio AI operates a global network of contributors who record consent-cleared human voice data in over 1,000 languages and dialects across 180+ countries, offered as off-the-shelf datasets, on-demand custom collection, and transcription/labeling. It sells this multilingual voice data to AI labs and enterprises training voice agents, speech recognition, TTS, and translation models, with consent captured on-chain and contributors paid in stablecoin.

1 investor

Silo is a decentralized money market protocol designed to support lending and borrowing across a wide range of assets, including tokenized value. It aims to create isolated, transparent markets with reduced liquidity dependency and yield generation.

1 investor

Silver 8 Capital is a digital assets hedge fund running a liquid, long-bias strategy focused on the most mature segment of the crypto market, combining industry research with quantitative models, derivatives, and active risk management. It operates as an institutional investor using a traditional hedge fund structure with regulated spot and derivatives venues.

1 investor

SimBull operates a sports exchange where users trade virtual shares in pro and college teams and earn payouts when teams win.

1 investor

The company facilitates integration between traditional fiat currency and digital currencies through partnerships with Asian banks and cryptocurrency exchanges, aiming to democratize access to financial services.

1 investor

SingulaNet develops and operates content technology services. The company designs platforms and tools for content creators and publishers.

1 investor

Singular was an NFT trading exchange that offered advanced technical analysis, gas-free listing cancellations, and a trading platform for professional traders. The platform has shut down due to sustained market decline and unsustainable operational costs.

1 investor

Sixpence is an on-chain money market for tokenized equities, letting users supply tokenized stocks and ETFs as collateral, borrow USDC against them, or deposit stablecoins into curated vaults to earn yield. It supports tokenized equities such as AAPL, TSLA, and ETFs issued by regulated providers, offering on-chain lending, borrowing, and trading in DeFi.

1 investor

Skuchain provides blockchain-based inventory financing and supply chain management through tokenized assets that enable suppliers to unlock working capital and buyers to gain real-time visibility and control over inventory. The platform uses digital multi-tokens (Popcodes and DLPCs) to facilitate inventory trading and financing across supply chains.

1 investor

SkyMapper operates a decentralized network of telescopes and all-sky cameras that lets astronomers, researchers, and citizen scientists remotely control equipment, capture observations, and store blockchain-verified astronomical data. The network provides continuous sky and orbital coverage for tracking satellites, asteroids, comets, exoplanets, and transient celestial events.

1 investor

Sky Meta builds NFT tools for Web3 integration, including GENU.N, a product-authentication platform that uses NFCs and NFTs to let brands verify product authenticity and combat counterfeiting. It also offers an NFT management and leasing service and a gaming platform for Web3 games to market to and grow their player base.

1 investor

Skynet Trading provides liquidity management and market-making services for crypto token issuers and venture capital funds, using API-key and delta-neutral models along with order book management, arbitrage, and hedging. It also offers standalone software, OTC trading, a self-service trading terminal, and real-time dashboards integrated across 60+ centralized exchanges and 20+ DEXs.

1 investor

SlashAuth provides a platform for web3 applications that offers authentication, role-based permissions management, and data persistence capabilities.

1 investor

Slingshot is a community-driven project that started in gaming and pivoted to building AI tools, unified by its $SHOT utility token on the Base blockchain. Its ecosystem includes an AI app marketplace (slingly.ai), a market intelligence dashboard (Cockpit), and a Web3 marketing program (SlingerBoost), with token staking for premium access and rewards.

1 investor