OpenRefine is a free, open source power tool for working with messy data and improving it

Haven is for people who need a way to protect their personal spaces and possessions without compromising their own privacy, through an Android app and on-device sensors

A decentralized bitcoin exchange network

Bitcoin Wallet strongly focused on privacy when transacting on the bitcoin network

Off-Chain Bitcoin payments using smart contracts

ABCore - Android Bitcoin Core

route bitcoin transactions via goTenna mesh devices

PonyDirect

Whirlpool server