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The best alternatives to Perimeter 81 are Subspace Network-as-a-Service, Portmaster, and Step It Up.
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Best alternatives to Perimeter 81
  • Accelerate your real-time applications on Subspace’s Network-as-a-Service. Get enterprise-level connectivity anywhere in minutes.
  • The Portmaster is a privacy app that at its core simply intercepts all your network connections. Different modules with different privacy features are built on top of it, which can all be enabled or disabled as desired. Privacy Filter, DNS over TLS, SPN
  • Step It Up motivates you to stay healthy by helping you track your daily steps, distance traveled, flights of stairs climbed, calories burned and making sure you hit your step goal each and every day. Step It Up is available for iPhone and Apple Watch.