Ethereum validator lookup by index or public key: status, balance, slashing, activation and exit epochs, withdrawal credentials and beacon chain head.

Token risk score on 70+ chains - Solana, EVM, Tron, Sui, TON, Hedera, XRPL, Stellar and more - who can mint, freeze or claw back, liquidity, flags and verdict.

Validate a Hedera account id before sending: format, whether the account exists, deleted and receiver-signature-required flags, live HBAR balance and OFAC screening.

Validate a Kaspa address before sending: 40-bit BCH checksum, address type (Schnorr, ECDSA, script), wrong-network detection, live KAS balance and OFAC screening.

Solana validator set ranked by stake: commission, delinquency, vote credits, stake concentration, median commission and Nakamoto coefficient.

Aptos validator set by voting power: share of stake, top 10 concentration, how many validators hold a third of the power, pending joins and leaves.

Pre-flight weather brief - METAR, TAF windows, FAA delays and closures, route SIGMETs, pilot reports, go/no-go verdict

Cosmos Hub bonded validators ranked by stake: commission and max commission, jailed status, stake share, Nakamoto coefficient, filter by moniker.

Packagist package info - latest version, license, description, requirements and release history for any PHP Composer package

Solar site report - monthly kWh, orientation sweep, bill offset, 25-year payback and IRR for any address or lat/lon

Company due-diligence dossier - SEC financials and event signals, OFAC screening, CFPB, FDA recalls, EPA and federal awards with match confidence

Tron Super Representatives and candidates ranked by votes: blocks produced and missed, productivity, vote share and Nakamoto coefficient.

Sui validator committee ranked by stake: voting power, commission, reference gas price vote, top-10 concentration and Nakamoto coefficient.

NEAR validator set by stake: share, block production uptime, slashing flags, top 10 concentration and the count of validators holding a third.

Hedera consensus nodes with stake, share of total stake, rewarded stake and reward rate, plus the top-5 concentration of the council network.

Validate a Filecoin address before sending: BLAKE2b checksum for f1, f2, f3 and f4, testnet detection, live actor and FIL balance, OFAC screening, send verdict.

US self-employment tax calculator - Social Security, Medicare, deductible half and wage-base room

US FICA calculator - employee and employer Social Security, Medicare and Additional Medicare tax

Used-car buyer report from a VIN - recalls, complaints by component, crash ratings, flags and inspection checklist

US federal income tax calculator - brackets, deductions, child tax credit, marginal and effective rate, room to next bracket