Ashampoo FireWall Free 1.20

Free security and firewall software for Windows PCs

Vote: 7.5/10 (6 votes) Platform: Windows

Comodo Firewall 5.4.189068.1354

A simple and sleek firewall available for Windows to monitor internet traffic

PRO: Low on system resources
CON: Doesn’t remember exceptions very well
Vote: 7.8/10 (62 votes) Platform: Windows

NoRoot Firewall 3.0.1

Firewall WITHOUT ROOT. Host name name filtering, fine-grained access control

Vote: 4.5/5 (87 votes) Platform: Android

NSA Firewall 1.0.6

With the NSA firewall, you can encrypt and decrypt any text

Vote: 4.0/5 (41 votes) Platform: Android

Android Firewall 2.3.2

Protect your mobile phone against intrusions, malwares and backdoors

Vote: 4.0/5 (81 votes) Platform: Android

Root Firewall 2.1

The best choice to ad-blocking, prevent data over-billing, save battery life

Vote: 4.0/5 (105 votes) Platform: Android

IP Blocker Firewall 3.1

Block either full lists of IP addresses or individual addresses as necessary

PRO: Will also illustrate network flow times when required.
CON: Some websites may detect this blocker and prevent the user from gaining access.
Vote: 6.1/10 (32 votes) Platform: Windows

Sygate Personal Firewall 5.6.2808.0

Set up a system firewall and protect your device from hackers trying to steal info

Vote: 8.0/10 (97 votes) Platform: Windows

NoRoot Data Firewall 5.3.3

Mobile and WiFi data firewall with NO ROOT REQUIRED

Vote: 4.0/5 (90 votes) Platform: Android

PeerGuardian 2.0-beta-6c

Firewall application with an emphasis on privacy

PRO: Free to download and use
CON: Not very user friendly
Vote: 6.2/10 (123 votes) Platform: Windows