I found these 8 cool tools for those who want to start mining free cryptocurrencies without spending money. I tested some and will share what I found.

Awesome Miner is classic, it’s been around since 2014. Swedish software that runs on Windows and Linux, very easy to use. Some people are mining on a small scale.

BetterHash is another one worth it for Windows. Nice detail: it automatically chooses which coin to mine so you can earn more. You can mine BTC, ETC, ETH there.

StormGain became famous because it’s really easy. Focuses on Bitcoin, consumes little energy. And the best part? You can mine cryptocurrencies for free even on your phone. It also supports Portuguese.

CryptoTab is different: you mine while browsing the web. Works on Windows, Mac, Android, iOS. Has a referral system that multiplies earnings.

Kryptex is a Windows app that pays for your PC’s capacity. According to them, you can earn up to R$520 per month if you have a decent computer.

ECOS is focused on Bitcoin. Offers ASIC mining, cloud mining, trading. It’s not completely free, but has a trial period.

PEGAPool is a very simple mobile app. You download it from the Play Store and start mining ETH just with your phone. They promise up to 0.01 ETH per day.

MinerGate works on various systems (Windows, Mac, Linux, Android, iOS). The software automatically detects which coin is most profitable to mine.

Bonus: EarnCrypto is a website where you earn free cryptocurrencies by doing small tasks — watching ads, answering surveys. It’s not mining, but it earns you some satoshis.

An important warning: be careful with scams and promises of free Bitcoin that ask for personal data. Always verify the source of the tool, its history, and security measures before using. Don’t fall for traps!