MetaMask is a web browser extension and mobile app that allows you to manage your Gnosis private keys. By doing so, it serves as a wallet for xDai, GNO and other tokens, and allows you to interact with decentralized applications, or dapps.
Read their article: Getting started with MetaMask
The official MetaMask Download page will detect your browser and link to the correct extension store. It supports Chrome, Firefox, Opera, Edge and Brave. It also has Android and iOS versions.
After the installation, MetaMask require a configuration to work with Gnosis, follow one of the instructions:
A. Quick configuration
- Chain List
- Deeplink (Gnosis Mainnet)
- Deeplink (Chiado Testnet)
B. Manual Configuration
1) Open MetaMask, and select Custom RPC from the Network Dropdown.
2) In the Custom RPC Settings, add in the Gnosis network details and click Save:
- Gnosis Mainnet
- Chiado Testnet