Proof.ink - Proven immutable data stored on the Steem blockchain
TurboTax Business - TurboTax Business is tax software that is designed for both small businesses and income taxes.
Immutable.js - Immutable persistent data collections for Javascript which increase efficiency and simplicity. - immutable-js/immutable-js
Gruntworx - GruntWorx Technologies replace manual organization & data entry, freeing tax professionals from tedious tasks, so they can focus on profit.
DataTip - The fastest way to store & access your critical datapoints.
OnlineFileTaxes - OnlineFileTaxes enables users to e-file 1099s and other tax forms.