BestChange might be a bit more popular than BitBay. We know about 1 link to it since March 2021 and only 1 link to BitBay. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
BitBay is originally Polish exchange yet (as I read somewhere) moved their business to Estonia. Also, I'd recommend Kraken. Source: over 2 years ago
Https://bestchange.com + https://local.bitcoin.com/offers + a lot of other places couple clikcs on Google away. Source: almost 3 years ago
Coinbase - Bitcoin, safe and easy.
Bisq - Bisq is an open-source desktop application that allows you to buy and sell bitcoins in exchange for national currencies, or alternative cryptocurrencies.
Bitfinex - Bitfinex is the largest and most advanced crypto-currencies trading platform.
LocalCoinSwap - Community-owned P2P cryptocurrency exchange with no KYC and 95% cold storage wallet security.
BitStamp - Provide reliable and easy to use service for companies and individuals to exchange bitcoins.
Airbitz - A Bitcoin wallet, new, reads well.