Coinbase - Bitcoin, safe and easy.
Whalebird - Whalebird is a Mastodon client for desktop application.
Binance - Cryptocurrencies exchange platform
Hyperspace Mastodon client - Hyperspace offers a clean, fast and responsive client for the Mastodon social network
Poloniex - US-based cryptocurrency exchange with maximum security
Moshidon - Better modification of the official Mastodon for Android app