Signal

Signal is an independent nonprofit, free and open source messenger application, state-of-the-art end-to-end encryption (powered by the open source Signal Protocol) that keeps your conversations secure.

It is available on desktop: Windows, MacOS, Linux, and on mobile apps: Android and iOS.

More info: https://www.signal.org

25 tips to secure your iPhone (2021)

Be paranoid on your iPhone. Defend yourself against thief, trackers and hackers by tuning safe setups and using security tweaks.

10 best free privacy apps to protect personal data on iPhone (2021)

10 best really free privacy applications for iPhone to secure, protect and encrypt your personal data

10 best free privacy apps to protect personal data on Android (2021)

10 best really free privacy applications for Android mobile to secure, protect and encrypt your personal data

8 secure encrypted messaging and video call apps (2021)

Comparison of messaging and VOIP services: Signal vs Telegram vs Threema vs Wickr vs Wire vs Element vs Keybase vs twinme

Wickr vs Signal: Encrypted messaging and Voice over IP

Wickr me is a real anonymous and fully-encrypted messaging and Voice over IP, contrary to Signal which is not anonymous.

25 best open source apps to protect your privacy in 2021

Opensource is more transparent and secure. Here is the explanation and the list of apps you should go for…