The best alternatives to Bitwit are Coinbase, Coinbase Merchant, and OpenNode. If these 3 options don't work for you, we've listed a few more alternatives below.
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Tanka— Tanka = Slack + Glean, built for fast-growing startups.
OpenNode is the easiest way to accept bitcoin. Use our simple yet powerful API, plug-ins, or extensions to add a bitcoin gateway to your business today.
CoinGate is a payment gateway allowing your customers to pay with Bitcoin ⚡, Litecoin, Ether and 70 other cryptocurrencies. Settle to your bank account at no risk of exchange rate volatility, or withdraw cryptocurrencies for a flat 1% fee. Your customers will definitely enjoy our sleek UI and an intuitive payment experience!