For monitoring blockchain transactions in real time to detect security risks, Lossless Aegis is a good option. This business-to-business tool monitors transactions in advance by scanning all transactions in newly mined blocks and uses machine learning to spot patterns and flag suspicious activity. It's designed to help companies improve security by spotting potential problems before they become problems.
Another top pick is Web3 Antivirus, a free, open-source browser extension that's designed to block malicious transactions and phishing websites. It offers transaction simulation, advanced risk assessment, proactive phishing protection and a large website blocklist. It works with Chrome, Edge and Firefox, and is highly customizable, so it's a good option for Web3 users who need a tool they can trust.