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The basic idea...

"The basic idea behind open source is very simple. When programmers on the Internet can read, redistribute, and modify the source for a piece of software, it evolves. People improve it, people adapt it, people fix bugs. And this can happen at a speed that, if one is used to the slow pace of conventional software development, seems astonishing...
...The Open Source pages exist to make this case to the commercial world."    - Introduction to Open Source -

Details: NetGuard - no-root firewall

market download NetGuard - no-root firewall
NetGuard provides simple and advanced ways to block access to the internet - no root required.

Applications and addresses can individually be allowed or denied access to your Wi-Fi and/or mobile connection.

Blocking access to the internet can help:

• reduce your data usage
• save your battery
• increase your privacy


• Simple to use
• No root required
• 100% open source
• No calling home
• No tracking or analytics
• Actively developed and supported
• Android 4.0 and later supported
• IPv4/IPv6 TCP/UDP supported
• Tethering supported
• Multiple device users supported
• Optionally allow when screen on
• Optionally block when roaming
• Optionally block system applications
• Optionally notify when an application accesses the internet
• Optionally record network usage per application per address
• Material design theme with light and dark theme

PRO features:

• Log all outgoing traffic; search and filter access attempts; export PCAP files to analyze traffic
• Allow/block individual addresses per application
• New application notifications; configure NetGuard directly from the notification
• Display network speed graph in a status bar notification
• Select from five additional themes in both light and dark version

There is no other no-root firewall offering all these features.

If you have a question or problem, you can send an e-mail to

If you like to help people less fluent in English, you can help translate NetGuard in your language:

If you like to test new features, you can participate in the test program:

All required permissions are described here:

The source code is available here:

Author: Marcel Bokhorst
Version: 2.106
Market link: eu.faircode.netguard
Web site:

Source code:
Code license:
Market downloads: >250,000
Market rating: 4.2 / 5.0
Category: Top:/Applications/Tools

Added: 2016-03-30
Updated: 2017-07-03
Hits: 562

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