| Organisation | Category | Projects | Website | Telegram | |
|---|---|---|---|---|---|
| OpenFinance One market API for agents — unified access to market data and execution including Solana spot and DeFi, covered in our agent market-API article. | Data | 0 | openfinance.tech | @OpenFinance_ai | — |
| Openbook OpenBook is a community-led decentralized exchange protocol on Solana, offering a unified liquidity layer and on-chain price discovery. | DeFi | 0 | openbook.ag | @openbookdex | — |
| OrbitFlare |
OrbitFlare helps users build on Solana by providing fast RPC nodes, real-time gRPC data streams, and secure validator staking.
| Infrastructure |
| 0 |
| orbitflare.com |
| @orbitflarenodes |
| — |
| Orca Concentrated liquidity AMM on Solana | DeFi | 1 | orca.so | @orca_so | — |
| Orynth Partner API for listing products and creator-coin launches on Solana. | Launchpad | 0 | orynth.dev | @orynth | — |
| OtterSec Leading blockchain security auditor | Security | 1 | osec.io | @osec_io | — |
| POAP Proof of Attendance Protocol — ERC-721 mementos for shared moments; drops, collectors, builder API/SDK. | Infrastructure | 0 | poap.xyz | @poapxyz | — |
| Paladin Paladin helps Solana validators protect against sandwiching attacks while earning additional MEV rewards through priority transaction processing. | Infrastructure | 0 | paladin.one | @paladin_solana | — |
| Parcl Real estate price index trading on Solana | DeFi | 1 | parcl.co | @Parcl | — |
| Paxos Stablecoin issuer and enterprise crypto infrastructure | Payments | 1 | paxos.com | @Paxos | — |
| Pay.sh x402 payment gateway for agents and builders — pay-per-call API access instead of API keys, covered in our x402 + pay.sh article. | Payments | 0 | pay.sh | @paydotsh | — |
| PayAI Network x402 payment facilitator on Solana enabling usage-based payments for AI agents, SaaS, and APIs. | Payments | 0 | payai.network | @PayAINetwork | — |
| PayBox Non-custodial wallet for AI agents by MoonPay. Vault wallets, cards, and secrets once; agents pay, sign, swap, and call x402 services through scoped passkey-gated grants over MCP (https://api.paybox.sh/mcp). | Payments | 0 | paybox.sh | @moonpay | — |
| PayPal Global payments network and issuer of PYUSD — a USD-backed stablecoin that launched on Solana in May 2024 alongside its original Ethereum deployment. | Payments | 0 | paypal.com | @PayPal | — |
| Perena Solana-native stablecoin liquidity layer — USD* multi-stablecoin pool aggregating USDC, USDT, PYUSD and emerging stables behind a single LP token. | Payments | 0 | perena.org | @Perena__ | — |
| PerpsPad PerpsPad by founder ADP the Great: Solana launchpad with fee-funded per-coin sub-wallet perps and buyback-burn. X @PerpsPadfun. API docs perpspad.fun/developers. Open tooling github.com/adpthegreat/perpspad-bot. | DeFi | 0 | perpspad.fun | @PerpsPadfun | — |
| Phantom Leading Solana wallet with built-in swaps and staking | Wallet | 1 | phantom.com | @phantom | — |
| Phoenix On-chain order book DEX on Solana by Ellipsis Labs | DeFi | 1 | phoenix.trade | @PhoenixTrade | — |
| Pipe Network Solana DePIN cloud — edge S3 object delivery and an AI model router routing requests across distributed nodes. | DePIN | 0 | pipe.network | @pipenetwork | — |
| Polymarket Prediction markets platform | DeFi | 1 | polymarket.com | @Polymarket | — |
| Privy Embedded wallet infrastructure powering 120M+ accounts — low-level APIs for onchain payments and asset management. A recurring subject of our embedded-wallet comparisons. | Wallet | 0 | privy.io | @privy_io | — |
| ProofNetwork Infrastructure for verifiable applications on Solana. Ships an MCP server that serves docs-as-a-tool for building proof-backed apps. | Infrastructure | 0 | proofnetwork.lol | @proofnetworks | — |
| Pump.fun Token launchpad and bonding curve platform on Solana | DeFi | 1 | pump.fun | @Pumpfun | — |
| Pyth Network Oracle network providing real-time market data | Infrastructure | 2 | pyth.network | @PythNetwork | — |
| Quantstamp Blockchain security firm with deep audit history. Covers Solana Rust programs and Anchor codebases at enterprise scale. | Security | 0 | quantstamp.com | @Quantstamp | — |
| QuickNode Multi-chain RPC infrastructure with Solana support | Infrastructure | 1 | quicknode.com | @QuickNode | — |
| Raiku Raiku provides coordination infrastructure for Solana, enabling guaranteed transaction execution through high-performance block building and advanced scheduling. | Infrastructure | 0 | raiku.com | @raikucom | — |
| Rakurai Rakurai boosts Solana blockchain performance by building high-throughput validator nodes with proprietary scheduling optimizations. | Infrastructure | 0 | rakurai.io | @Rakurai_io | — |
| Range Treasury, risk, and compliance platform for stablecoins and fiat. Risk/Data/Platform/Faraday APIs, Squads alerting, Solana screening, MCP for agents. | Infrastructure | 0 | range.org | @range_org | — |
| Rarible Multi-chain NFT marketplace with Solana support | NFT | 1 | rarible.com | @rarible | — |
| Raydium AMM and liquidity provider on Solana | DeFi | 1 | raydium.io | @Raydium | — |
| Realms On-chain governance and DAO tooling for Solana | Infrastructure | 1 | realms.today | @realmsdao | — |
| RedotPay Stablecoin-based crypto card and multi-asset wallet app — virtual/physical cards, deposits incl. SOL, credit, P2P. | Payments | 0 | redotpay.com | @redotpay | @RedotPay |
| Render Network Decentralized GPU rendering on Solana | DePIN | 1 | rendernetwork.com | @rendernetwork | — |
| Riva Labs Post-quantum protocol engineering firm (Europe/Switzerland). Designs PQ cryptography for onchain assets; research, protocol specs, and open-source implementations. Flagship project NiceTry (quantum-safe Ethereum smart wallet / Ephemeral Keys). | Security | 0 | riva.xyz | @riva_labs | — |
| Roam DePIN for telecom and global Wi-Fi roaming — share connectivity, earn tokens, build the people-owned wireless network. | DePIN | 0 | roam.xyz | @Roam_xyz | — |
| Robinhood Trading platform with Solana token support | Exchange | 1 | robinhood.com | @RobinhoodApp | — |
| Robinhood Chain Robinhood's L2 blockchain built on Arbitrum Orbit for tokenized real-world assets — the settlement layer behind its EU stock tokens. Announced June 2025; a competing approach to Solana-native tokenized stocks (Token-2022 / Securitize). | Infrastructure | 0 | robinhood.com/chain | @RobinhoodCrypto | — |
| RugCheck Provides tools to identify potential rug pulls and frauds in blockchain projects. | Security | 0 | rugcheck.xyz | @Rugcheckxyz | — |
| SODAX Cross-network execution infrastructure: one SDK for intent swaps, lending/borrowing, bridge, and staking across 20+ chains including Solana. Hub-and-spoke design (Sonic hub) with solver-based settlement, sodaVariants for cross-network assets, and agent-ready skills. SDKs: @sodax/sdk, wallet-sdk, dapp-kit. Submitted via recommend by @hazy0. | Infrastructure | 0 | sodax.com | @sodaholders | — |
| SOL Strategies SOL Strategies operates institutional-grade Solana validator infrastructure and maintains a digital asset treasury focused on SOL token holdings. | Infrastructure | 0 | solstrategies.io | @solstrategies_ | — |
| Saber StableSwap-style AMM for stablecoins and pegged assets on Solana. One of the earliest major Solana DeFi protocols. | DeFi | 0 | app.saber.so | @Saber_HQ | — |
| Salmon Wallet Open-source self-custodial Solana wallet positioned as open wallet infrastructure: thin core, modular Powerups, curated protocol integrations, web/extension/Android clients, and a mainnet validator. | Wallet | 0 | salmonwallet.io | @salmonwallet | @salmon_wallet |
| Samui Samui provides an open-source wallet and development toolbox for Solana blockchain builders, offering integrated testing and debugging capabilities. | Developer Tools | 0 | samui.build | @SamuiBuild | — |
| Sanctum LST liquidity infrastructure on Solana | DeFi | 1 | sanctum.so | @sanctumso | @sanctum_dev |
| Saros Saros lets users trade tokens, earn yield, and stake on Solana with lower fees and faster transactions. | DeFi | 0 | saros.xyz | @saros_xyz | — |
| Save Decentralized lending protocol on Solana offering lending, borrowing, stablecoin issuance, liquid staking, and meme coin trading tools. | DeFi | 0 | save.finance | @save_finance | — |
| Sec3 Solana smart contract security auditing | Security | 1 | sec3.dev | @sec3dev | — |
