Samui

Samui is an open-source wallet and toolbox designed specifically for developers building on Solana. Where most wallets are built for end users moving assets, Samui addresses a different problem: the friction developers face when they need a wallet, an airdrop faucet, a token minting interface, an NFT management panel, and a transaction explorer all at once, switching between tools and networks throughout a development session. Samui integrates these capabilities into a single MIT-licensed browser extension with a companion hosted web app.

Developer-First by Design

The project's core philosophy is that developers on Solana deserve a wallet built around their workflow rather than a consumer product they have to adapt. Samui makes devnet and localnet first-class environments -- not an afterthought -- and prioritizes fast switching between key pairs and networks. A developer testing a program on localnet can move to devnet and back without leaving the wallet or importing new keys each time.

Samui also solves a common pain point: verifying what a transaction actually did. Consumer wallets typically show a minimal summary after signing, leaving developers to paste a transaction signature into a block explorer separately. Samui includes in-wallet transaction views, so the details of what a transaction touched are visible directly inside the extension without an additional tool.

Beyond wallet mechanics, Samui includes built-in tooling for three common developer tasks: airdropping SOL on testnet environments, creating SPL tokens, and managing NFTs. These are operations that otherwise require CLI tools, separate web apps, or writing scripts, and having them accessible directly from the wallet speeds up prototyping and testing workflows considerably.

Open Source as a Foundation

The fully open-source nature of Samui is central to its pitch to the developer community. The repository at github.com/samui-build/samui-wallet is MIT licensed and publicly auditable, which matters particularly for a wallet -- a category of software where closed-source implementations create inherent trust risks. Developers integrating their dapps can inspect exactly how Samui implements wallet behavior, and teams evaluating it for internal use can review the code themselves rather than relying on attestations.

The project is built in TypeScript (making up roughly 98.5% of the codebase) and organized as a monorepo managed with Turbo. Bun serves as the runtime and package manager. The build system uses Biome for linting and Vitest for testing. Astro appears in the stack for documentation or web app surfaces. The wallet conforms to the Solana Wallet Standard, the cross-wallet interface specification that allows dapps to detect and connect to wallets without custom per-wallet integration code.

Cypherpunk Hackathon Recognition

Samui emerged from the Colosseum Solana Cypherpunk Hackathon, which ran in 2024 and became the largest crypto hackathon recorded at that point, with over 9,000 participants forming teams and 1,576 projects submitted for final judging. The hackathon was organized by Colosseum, the venture firm focused on backing Solana ecosystem projects.

Among the winners, Samui received the Public Good Award -- a $10,000 USDC prize recognizing open-source work that provides value to the broader Solana developer ecosystem rather than a specific commercial niche. The award category reflects how Colosseum and its judges assessed Samui: not as a consumer product competing for wallet market share, but as infrastructure that benefits the ecosystem as a whole by lowering the tooling barrier for anyone building on Solana.

Project Status and Community

The samui-wallet repository has accumulated 171 stars and 54 forks on GitHub, with 65 open issues and 25 pull requests reflecting sustained community engagement. Five issues are marked "help wanted," signaling that the maintainers are actively inviting outside contributions. The project was last updated in July 2026, confirming it remains under active development rather than having stalled after the hackathon.

The team is led by maintainers operating under the handles beeman and tobeycodes. The organization hosts a Discord server at discord.gg/samui-build for community discussion and support.

Why It Matters to the Solana Ecosystem

The Solana developer tooling landscape has matured significantly, but wallet tooling has lagged behind program development infrastructure. Foundry-style development environments for Solana programs have improved, RPC tooling has expanded, and testing frameworks have grown more capable. The wallet layer for developers has been slower to catch up, with most builders defaulting to Phantom or Backpack -- products designed for end users -- during development and testing.

Samui targets that gap directly. By treating devnet and localnet as primary rather than secondary, providing fast key-pair management, and integrating airdrop and token-creation utilities that developers use repeatedly during a project, it removes several categories of context-switching from a typical Solana development workflow. The fully auditable codebase also makes it a candidate for inclusion in developer tutorials and documentation that require trust in the wallet being used.

The Wallet Standard conformance means dapps that already support the standard can work with Samui without any additional integration work, which lowers the friction for developers who want to test their app against a different wallet implementation.

Founded in September 2024, Samui sits in a category that is still early: developer-native wallets on Solana. Its Public Good Award at Cypherpunk represents external validation from the Solana ecosystem that the tooling problem it addresses is real, and that the open-source approach is the right way to solve it.