transaction tools

Blockonomics

Blockonomics is an easy to use bitcoin financial tracker. It enables users to watch balances/transactions of multiple addresses without requiring private key.

Mocacinno's Useful Bitcoin Tools

A collection of free bitcoin tools that are usually only accessible to those who run their own node and have sufficient technical knowledge. Includes a fee estimator, transaction coder/decoder, signature functions, timestamp functions, transactions pusher and more.

Shared Coin

Make your transactions private without needing to trust the Shared Coin service.

Coinb.in

A Bitcoin Wallet written in Javascript. Supports Multisig, Custom Transactions, nLockTime and more!

Bitcoin fees

Predicting bitcoin fees for transactions. Fees are displayed in Satoshis/byte of data. Miners usually include transactions with the highest fees first.

Two-Factor Bitcoin

The only way to do a two-party transaction between untrusted peers (an implementation of BIP38).