

DuckDuckGo Privacy Browser is designed to help users control their personal data while browsing the internet. The browser provides privacy essentials that give users control over their data during web searches.
Cost / License
- Freemium
- Open Source (Apache-2.0)
Application type
Platforms
- Mac
- Windows
- Android
- iPhone
- Android Tablet
- iPad
- F-Droid


+5
Privacy-focused, open-source email app offering encryption, unlimited accounts, customizable features, unified inbox, and low data usage.


+5
GnuPG allows to encrypt and sign your data and communication, features a versatile key management system as well as access modules for all kinds of public key directories. GnuPG, also known as GPG, is a command line tool with features for easy integration with other applications.

Opt out of PRISM, the NSA’s global data surveillance program. Stop the American government from spying on you by encrypting your communications and ending your reliance on proprietary services.

Manage complex projects with nested task breakdowns, multi-language support, XML storage, scheduling, and customizable printing via advanced formatting.


+9
Self-hosted app for local checklists and notes with WYSIWYG editing, drag-and-drop reordering, Kanban boards, progress bars, Markdown, and sharing features.


+2
A free, open-source platform enabling decentralized and centralized social networking. Supporting free speech, monetization, and the sharing of various media.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad


+8
eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts, notes and chat.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Mac
- Windows
- Android


+5
DeepNotes is an open source, end-to-end encrypted visual note-taking app with deep page navigation and live collaboration. Create mind maps, diagrams, kanban boards, among others. Infinite nesting of infinite canvases.
Cost / License
- Freemium
- Open Source (AGPL-3.0)
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- iPhone
- Android Tablet
- iPad
- Software as a Service (SaaS)


+5
Self-hosted, end-to-end encrypted cloud storage. Files, names, and search queries stay encrypted on your device. Open source server, runs in ~20 MB RAM.
Cost / License
- Free
- Open Source
Application types
Platforms
- Android
- iPhone
- Self-Hosted
- Docker


+7
Manage and secure two-factor authentication easily across Gmail, Dropbox, and more. Sync devices, secure backups, and enjoy offline access.
Cost / License
- Free
- Proprietary
Application type
Platforms
- Android
- iPhone
- Android Tablet
- iPad
- Apple Watch


+1
Lunatask is an all-in-one encrypted to-do list, habit tracker, journaling, life-tracking and notes app. It remembers stuff for you and knows what to work on next. Choose from a variety of productivity techniques like Kanban, Must/Should/Want Method, Eisenhower Matrix, or Time...
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone


+1
End-to-end encrypted file sync and sharing with secure workspace, robust permission management, two-factor authentication, and mobile offline access.
Cost / License
- Paid
- Proprietary
Application types
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad


+5
Creates a self-contained HTML file bundling encrypted notes and attachments, decryptable locally in any modern browser, with password protection, no server, and supports offline use.
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Online


+2
restic is a program that does backups right. The design goals are: Easy, Fast, Verifiable, Secure, Efficient, Free.
Cost / License
- Free
- Open Source (BSD-2-Clause)
Application types
Platforms
- Mac
- Windows
- Linux
- BSD
- Arch Linux
- FreeBSD
- OpenBSD

SpiderOak provides an easy, secure and consolidated online backup, storage, access, sharing & sync tool for Windows, macOS, and Linux (Ubuntu, Debian & Fedora). SpiderOak offers a different approach to online backup, synchronization, and sharing.
Cost / License
- Paid
- Proprietary
Application types
Platforms
- Mac
- Windows
- Linux

Picocrypt is a very small (hence Pico), very simple, yet very secure encryption tool that you can use to protect your files. It's designed to be the go-to tool for encryption, with a focus on security, simplicity, and reliability.

Peer-to-Peer file sharing with auto-expiring links. Supports Tor, QR codes, multi-language. 24-hour server retention. Features also include clipboard sharing and custom link expiration.


Anyone who has gone through the trouble of setting up a secure website knows what a hassle getting and maintaining a certificate can be. Let’s Encrypt automates away the pain and lets site operators turn on and manage HTTPS with simple commands.


+8
Autotext expander organizes reusable texts in folders, inserts phrases by shortcut or abbreviation, syncs across devices, supports macros, and offers clipboard memory.


+12
sourcehut is a network of useful open source tools for software project maintainers and collaborators, including git repos, bug tracking, continuous integration, and mailing lists.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Online
- Self-Hosted
- Software as a Service (SaaS)


+3
Flexible writing and note-taking tool with markdown, plain text storage, cross-note links, hashtags, powerful search, Focus Mode, iCloud sync, and export options.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Mac
- Online
- iPhone
- iPad


+5
Gpg4win enables users to securely transport emails and files with the help of encryption and digital signatures. Encryption protects the contents against an unwanted party reading it. Digital signatures make sure that it was not modified and comes from a specific sender.
Cost / License
- Free
- Open Source
Application type
Platforms
- Windows
- Microsoft Office Outlook
- S/MIME
- GnuPG

Keybase is a new and free security app for mobile phones and computers. For the geeks among us: it's open source and powered by public-key cryptography.
Cost / License
- Free
- Open Source (BSD-3-Clause)
Application type
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- iPad
- Ruby
- JavaScript
- Tor
- Go (Programming Language)
- Java


+2












































