Bitcoin faucets are a reward system, in the form of a website or app, that dispenses rewards in the form of a satoshi, which is a hundredth of a millionth BTC, for visitors to claim in exchange for completing a captcha or task as described by the website.
There are also faucets that dispense alternative cryptocurrencies. Rewards are dispensed at various predetermined intervals of time. Faucets usually give fractions of a bitcoin, but the amount will typically fluctuate according to the value of bitcoin.
Best BTC Faucet21 is a completely FREE bitcoin faucet paying out up to 3 satoshi every 15 minutes.
We also run a very generous affiliate/referral program: Ask your friends and colleagues to sign up using your referral link and receive 25% commission from every claim that they make from the faucet.