Next month

ON SALE Thursday 8 August Features 30 greatest tech milestones ever To mark our 30th anniversary, our contributors (and readers) pick out the 30 most significant products and events. Features Keep your private messages private We compare WhatsApp, iMessage, Telegram and other popular messaging platforms to find the smartest, safest ways to communicate. Features Chrome OS Flex masterclass Turn any spare PC into a snappy, secure Chromebook with Google’s free web-based OS. Darien Graham-Smith shows you how. Labs VPNs Whether you want to protect your privacy, dial back to the office network securely or switch countries to access streaming media, our in-depth testing and authoritative reviews will reveal what to buy. Retro Netscape Navigator turns 30 David Crookes remembers the rapid rise – and equally rapid fall – of Netscape Navigator, which finally prompted Microsoft to take notice of the World Wide Web. Futures Battery boosters: thanks electric…