Configure Ubuntu’s Uncomplicated Firewall through Gufw, a graphical firewall interface.
The Best OpenSnitch Alternatives in 2026
Looking for something like OpenSnitch? Here are 15 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan and 14 are open source.
Control outgoing network connections on Linux with OpenSnitch, an interactive application firewall.
Top picks at a glance
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | gufw | — | Yes | Linux |
| 2 | Howdy | — | Yes | Linux, Windows |
| 3 | macapt | — | Yes | Windows, macOS |
| 4 | Surfer Protocol | — | Yes | — |
| 5 | LuLu | — | Not stated | macOS, Web |
| 6 | vnStat | — | Yes | Linux |
| 7 | JShielder | — | Yes | Linux |
| 8 | Yubikey Full Disk Encryption | — | Yes | Linux |
| 9 | Googerteller | — | Yes | Linux |
| 10 | Lynis | — | Yes | Linux, macOS |
All OpenSnitch alternatives
Add face-based authentication to Linux using Howdy, which works with built-in infrared emitters and cameras.
Process macOS and iOS disk images or live machines with mac_apt to extract forensic data and metadata.
Export personal data with Surfer Protocol, an open-source framework with a desktop app and Python SDK.
LuLu
objective-see.org/products/lulu.htmlMonitor and control outgoing network connections on macOS with LuLu, a free, open-source firewall.
Monitor network traffic on Linux and BSD from the console with vnStat, using interface statistics.
Harden Linux servers and deploy LAMP or LEMP stacks with JShielder’s security script.
Use a YubiKey challenge-response at system startup to open a LUKS-encrypted disk volume.
Hear when a computer sends requests to Google with Googerteller, which provides audible feedback about browsing activity.
Audit Linux, macOS, and Unix systems for security configuration and compliance with Lynis.
Set USB device authorization rules with USBGuard, a framework for controlling device access.
This community guide collects recommendations for improving security and privacy on macOS.
Block ads in Safari on Apple devices with wBlock, an open-source blocker that includes lists, scripts, and styles.
This curated repository lists security tools related to macOS and iOS, organized by platform and topic.
Authorize binary execution and file access on macOS with Santa, a system extension and policy tool.
Alternatives to similar tools
What is the best alternative to OpenSnitch?
Is there a free alternative to OpenSnitch?
Are there open-source alternatives to OpenSnitch?
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative















