Check out TestnetScan.com: a self-hosted block explorer for BTC / LTC / XMR testnets

I created a testnet wallet some time ago and it relies on public explorer APIs. I wanted to have a block explorer that I could host myself since most testnet explorers are either outdated or not maintained, so I went ahead and built one: https://testnetscan.com This explorer runs entirely on your own nodes (Bitcoin/Litecoin Core + ElectrumX, monerod for Monero). It's made with pure PHP and SQLite, server-rendered without any JS frameworks or CDNs, features a strict CSP, and no tracking. It's licensed under AGPL-3.0. It provides a drop-in REST API that's compatible with Esplora and mempool.space, meaning other wallets and tools can easily connect to it. You can even use a light wallet with your own setup for complete independence. Just a heads-up: it's meant for testnet use only, and the public version runs on my nodes. Right now, it supports the testnets for three chains: Bitcoin testnet Litecoin testnet, which includes full MWEB features (peg-ins, peg-outs, supply) and a privacy-analysis overlay from a related project, MWEBscan Monero testnet and stagenet, featuring ring analysis, local view-key decoding, and payment proofs. Here's what you get: Blocks, transactions, addresses: details on per-output spent status, script, witness information, RBF and CPFPMempool: next-block projections, fee histogram, time-series for mempool and feesMining dashboard: pool attribution, reward stats, difficulty and hashrate info, recent blocks, plus a chart hubxpub / ypub / zpub lookup to derive and verify receive and change addresses Tools: broadcast, testmempoolaccept dry-run, decode raw tx/script/PSBT, encode OP_RETURN, verify signed message The main goal is to have a testnet explorer that’s actually up-to-date and can be hosted by anyone, whether you're testing something before it hits the main network.