TestnetWallet.net: Client-side, open-source Bitcoin & Litecoin testnet wallet

[Tech1k]

https://testnetwallet.net

A free, open-source wallet for Bitcoin testnet4 and Litecoin testnet, built for learning and for testing before you touch mainnet. It runs entirely in the browser: your keys are generated locally and never leave it, there's no server I run, and it's a no-build static site, so you can self-host it (clone the repo, drop the folder on any static host, or run it locally) and it works over Tor.

Honest caveat: it's a light wallet, not its own node. Balances, history, broadcasting, and the in-wallet faucet go through public Esplora-style explorer APIs (litecoinspace.org for Litecoin, mempool.space for Bitcoin), so those services see your addresses, like any light/SPV wallet. If you self-host, you can point it at your own Esplora instance for full independence.

Features

• BIP39 HD wallet (create or import); Legacy, SegWit (bech32) and Taproot addresses
• Send to multiple recipients, manual sat/vB fees, coin control, OP_RETURN, RBF and CPFP
• Multisig: build/import P2WSH descriptor wallets (BIP48), coordinate a spend over PSBT
• Electrum seed import; message signing/verification (legacy BIP-137 and BIP-322)
• Dev tools: decode a raw tx or PSBT, broadcast raw, build BIP21/QR
• Get free test coins via CypherFaucet, in-wallet
• Optional password encryption-at-rest; installable PWA with some offline functionality

Learning by doing: because it's testnet the coins have no real value, so it's a safe place to see how things actually work instead of just reading about them: derive Legacy/SegWit/Taproot addresses from one seed and compare them, watch a transaction confirm, RBF a stuck fee, decode a raw tx or PSBT to inspect its anatomy, or stand up a multisig and coordinate a spend, all without risking anything. There's a beginner walk-through built in, and it doubles as a sandbox for devs testing flows before mainnet.

Roadmap: Litecoin MWEB (receive-side) is in development; Monero testnet/stagenet are coming back shortly (pending my CORS-enabled nodes syncing); non-custodial cross-chain atomic swaps (adaptor signatures) are further out.

Testnet only, so the coins have no real value. Still in active development; feedback and bug reports welcome.

Source: https://github.com/Tech1k/testnetwallet.net

[NotATether]

This is a great creation, but are you sure it's going to be safe as a simple web app? I know it's just testnet coins, but you can't rule out the possibility of depraved users trying to steal other people's (worthless) testnet coins...

Any other faucets planned in case this project blows up, or will people have to claim directly from other faucets themselves?