Open Source Security & Privacy Software
Magisk
Magisk is known as a "systemless" root method. It's essentially a way to modify the system without actually modifying it. Modifications are stored safely in the boot partition instead of on the main system. With Magisk you can root phone or tablet to give you complete control over the system with compromising your device.
Signal
Signal is a cross-platform encrypted messaging application that has a strong focus on privacy. The application is developed by Signal Messenger LLC and provides users with features like one-to-one and group messages, which can include files, voice notes, images and videos. The software is famous for being used by the whistleblower and privacy advocate Edward Snowden who once said "I use Signal every day, it is the most scalable encryption tool we have".
andOTP
andOTP implements time-based one-time passwords (TOTP) and HMAC-based one-time passwords (HOTP). With andOTP you can simply scan the QR code and login with the generated 6-digit code. Allowing you to more easily and securely access your online accounts.
Wireshark
Wireshark is the world's most widely-used network protocol analyzer software. With Wireshark you can get a better understanding on what's happening on your network. The software let's you do deep analysis across hundreds of protocols at a microscopic level. Wireshark is free and open-source and has been in active development by contributions from volunteers across the globe since 1998. Today the software is used by commercial and non-profit enterprises, government agencies, and educational institutions.
Authy
Authy is a two-factor authentication (2FA) for protecting yourself online. With Authy you can defeat cyber criminals & avoid account takeovers with stronger security. Authy is created by Twilio and avalible for Android, iOS and Google Chrome. It integrates with many third-party services such as Facebook, Amazon, Google, Microsoft, Dropbox and many more.
AdGuard
AdGuard is an ad blocker that hides your data from the multitude of trackers and activity analyzers that swarm the web. AdGuard will deal with annoying banners, pop-ups and video ads once and for all, while also able you to avoid all fraudulent and phishing websites and malware attacks. You can also potect your kids online by restricting them from accessing inappropriate and adult content with AdGuard's perental controls.
pwncat
pwncat is a sophisticated bind and reverse shell handler with many features as well as a drop-in replacement or compatible complement to netcat, ncat or socat. pwncat is like netcat on steroids with Firewall, IDS/IPS evasion, bind and reverse shell, self-injecting shell and forwarding magic - and its fully scriptable with Python (PSE)
Cryptomator
Cryptomator is a simple tool makes your cloud storage trustworthy. With Cryptomator, you can encrypt your data quickly and save it to your favorite cloud services provider. The tool is released as free and open source software under the MIT License. Allowing you and other developers to verify and build upon the source code, to further strengthen and improve the application.
Simplewall
With Simplewall you can easily configure your configure network activity. It's a tool that allows you to configure the Windows Filtering Platform (WFP). The lightweight application is less than a megabyte, and it is compatible with Windows Vista and higher operating systems. Simplewall is developed and released as free and open source software for Windows.
Privacy Badger
Privacy Badger is a browser add-on that stops advertisers and other third-party trackers from secretly tracking where you go and what pages you visit. Privacy Badger is avalible as a Google Chrome, Microsoft Edge, Firefox and Opera.