John McAfee's antivirus software struggles with poor performance and questionable business practices, relying on financial arrangements with manufacturers for its prevalence. Users often face persistent pop-ups for additional services, leading to high subscription costs without significant value. Norton, another antivirus solution, is criticized for slowing down system performance and not providing better protection than Windows Defender. ExpressVPN has shifted focus from privacy to marketing after its acquisition, raising concerns about user data security. Honey, a shopping extension, tracks personal data and may mislead users with affiliate links. CCleaner has become bloated since its acquisition by Avast and is no longer effective on Windows 11. WiFi speed booster software often fails to improve performance and may collect user data. Crypto mining software poses risks as many applications are malware. Razer Synapse often causes performance issues for gamers, while NVIDIA's application can negatively impact system performance and is not as beneficial as alternatives.