LuLu alternatives for Mac
LuLu — Open-source firewall to block unknown outgoing connections — is installed 1,973 times a month through Homebrew. These are hand-picked alternatives that occupy the same slot, ordered by how comparable their user base is.
Run
brew install --cask lulu to install LuLu itself.- Little Snitch5.5× smaller user base
- BlockBlock5.9× smaller user base
- GPG Suite5.6× smaller user base
- KnockKnock3.0× smaller user base
- Do Not Disturb151.8× smaller user base
- 1Password3.3× the installs
- Tailscale10.3× the installs
- Wireshark2.1× the installs
Full comparison
| LuLu | Little Snitch | |
|---|---|---|
| Type | GUI app | GUI app |
| Category | Security & Privacy | Security & Privacy |
| Open source | Yes (inferred) | Not declared |
| Licence | Not declared | Not declared |
| Apple silicon | Universal | Universal |
| Latest version | 4.5.3 | 6.5 |
| Dependencies | 0 | 0 |
| Installs (30 days) | 1,973 | 357 |
| Install command | brew install --cask lulu | brew install --cask little-snitch |
How we picked these
The list comes from a hand-maintained set of same-purpose apps, not from keyword matching. Alternatives are removed automatically when Homebrew no longer carries them. Ordering reflects 30-day install volume, not paid placement. Data updated 2026-10-26.