Samui

Samui is an open-source wallet and toolbox built for people who are actively developing on Solana. Where most wallets are designed around retail users holding assets, Samui is designed around the workflows that matter when writing, testing, and debugging programs on the network: airdropping SOL onto a test account, switching between keypairs, inspecting a transaction without leaving the wallet, or building against localnet. It is available as a browser extension and as a hosted web application, and is MIT-licensed.

The Developer Wallet Problem

Consumer wallets on Solana are optimised for mainnet, token balances, and swap flow. That is the right shape for most users, but it creates friction for builders. Switching to devnet typically means jumping to a different tool. Understanding what just happened in a transaction means opening a block explorer in a new tab. Generating and managing test keypairs becomes a manual exercise outside the wallet itself.

Samui treats those friction points as the core design problem. Devnet and localnet are first-class network options, not afterthoughts. In-wallet transaction views surface what actually happened without requiring an external explorer. Fast keypair switching is built in rather than patched on later. The project describes this design goal plainly: to eliminate the "black box" problem by building a wallet that is fully auditable and verifiable by the community.

Features

Samui's toolbox includes several capabilities aimed at common developer tasks on Solana:

• SOL airdrops: request test SOL directly from the wallet interface without leaving the development context.
• Token creation: mint test tokens from inside the wallet during development.
• NFT management: view and manage non-fungible tokens on any supported network.
• Network and keypair switching: move between mainnet, devnet, and localnet and between multiple keypairs with low friction.
• In-wallet transaction views: inspect transaction details inside the wallet rather than routing to an external explorer.
• Balance privacy: a hide-balance option for users who prefer not to expose figures on screen.
• Token watching and bookmarks: monitor specific tokens inside the portfolio view.

The wallet complies with the Wallet Standard, Solana's shared interface specification for wallet-to-dApp interaction. This means Samui connects to dApps that implement the standard without requiring custom integration work on either side.

The codebase is a TypeScript monorepo built with Bun and Turbo, using Biome for linting and Vitest for testing. As of mid-2026 the repository had accumulated over 820 commits, with 169 stars and 56 forks on GitHub and an active pull-request queue of around 30 open pull requests.

Cypherpunk Hackathon

Samui was submitted to the Solana Cypherpunk Hackathon, which Colosseum described as the largest crypto hackathon to date, drawing more than 9,000 participants from over 150 countries and producing 1,576 final project submissions. Samui won the Public Good Award, which recognises an open-source project that benefits developers across the Solana ecosystem. The prize was $10,000 USDC.

:::callout{type="quote" label="Cypherpunk Hackathon — Public Good Award" source="Colosseum, blog.colosseum.com"} An open-source project that benefits developers across the Solana ecosystem. :::

The award category reflects what Samui is actually trying to do: infrastructure for builders rather than a product aimed at end users. Public-goods projects rarely win headline prizes in hackathon rounds that weight commercial novelty, so the distinction matters.

Team and Maintenance

The project is maintained by beeman (Bram Borggreve), an open-source developer who also works in developer marketing and relations at Solana Mobile, and tobeycodes, with contributions from a broader group of community developers. The GitHub repository includes a code of conduct, contributing guidelines, and a security policy, indicating the project is structured for external participation rather than internal development alone.

Community engagement runs through Discord and X. The project ships updates continuously: a hosted web version went live in October 2025, and the issue tracker reflects ongoing work on the wallet signing service, RPC caching, data preloading, and account hierarchy management. As of August 2026 the repository remains actively maintained.

Fit on Solana

Samui occupies a gap in the Solana developer toolchain. The network has mature infrastructure for writing programs and mature consumer wallets for using those programs, but the tooling for the middle layer — actively iterating on a program, testing transactions, managing test accounts — is less developed. Samui addresses that directly, which is why the Cypherpunk Hackathon jury recognised it as a public good rather than a commercial product.

Its open-source nature and MIT licence mean any developer can fork it, extend it, or contribute back. The maintainers have structured the repository to support that: the monorepo layout, the contributing guidelines, and the active issue triage all point toward a project that expects outside participation. Developers can join the community via the project's Discord or follow development at github.com/samui-build.