As of now, there are not many cryptocurrency trading platforms in Windhoek, Namibia. The country is still in the early stages of adopting cryptocurrencies and blockchain technology. However, there are a few platforms that residents can use to trade cryptocurrencies in Windhoek:

1. Luno: Luno is a popular global cryptocurrency exchange that allows users to buy, sell, and store various cryptocurrencies such as Bitcoin and Ethereum. It has a user-friendly interface and offers competitive fees for trading.

2. Binance: Binance is one of the largest cryptocurrency exchanges in the world, offering a wide range of cryptocurrencies for trading. Users in Windhoek can create an account on Binance and start trading digital assets easily.

3. LocalBitcoins: LocalBitcoins is a peer-to-peer trading platform that allows users to buy and sell Bitcoin directly with each other. This platform is popular among users who prefer to trade cryptocurrencies in a more decentralized manner.

4. Paxful: Paxful is another peer-to-peer trading platform that enables users to buy and sell Bitcoin using various payment methods such as bank transfers, cash deposits, and online wallets. Users in Windhoek can use Paxful to trade Bitcoin with other users in the region.

5. eToro: eToro is a social trading platform that offers a wide range of financial instruments, including cryptocurrencies. Users in Windhoek can create an account on eToro and start trading cryptocurrencies with ease.

It is important to note that cryptocurrency trading carries risks, and users should conduct thorough research and exercise caution when trading digital assets. Additionally, users should comply with local regulations and ensure that they are using reputable platforms for trading cryptocurrencies in Windhoek, Namibia.