Show HN: Hostflip – a macOS /etc/hosts switcher that detects external editshttps://github.com/heronapp/hostflip
Hi HN — I built hostflip, a native macOS menu bar app for switching /etc/hosts profiles. It is free and open source under the MIT license. The problem I wanted to solve was not just editing hosts entries. It was sharing /etc/hosts with Docker Desktop, VPN clients, scripts, and manual edits without one writer silently erasing another's changes. On first run, hostflip captures a read-only baseline (called Base Hosts) from the existing file and keeps the untouched original as hosts.orig. Active profiles are appended after the baseline in a clearly marked block. Writes are still atomic whole-fi…