Sioyek is a PDF viewer with minimal interface optimized for reading research papers and technical books.
+2
PDFs
Multi-platform document viewer supporting PDF, comics, EPUB, images, and Markdown with annotation tools, sidebar navigation, and text-to-speech features.
Cost / License
- Free
- Open Source
Application types
Platforms
- Windows
- Linux
- BSD
- KDE Plasma
- Snapcraft
- Linux Mobile
- Flathub
- Haiku
+2
locally hosted web application that allows you to perform various operations on PDF files.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Online
- Self-Hosted
- Cloudron
- Docker Hub
+1
BentoPDF is a PDF Toolkit that works fully offline with no sign ups. It's fast, secure and forever free. In an era where data is a commodity, we take a different approach. All processing for BentoPDF tools happens locally in your browser.
Encrypted Notes
Notesnook is a simple and cross-platform private notes app that keeps your notes organized and synced on your phone, tablet and computer. Take notes, capture ideas, create to-do lists, keep a journal, write your assignments and manage projects, we have got you covered.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Google Chrome
- Flathub
- F-Droid
- Software as a Service (SaaS)
- Flatpak
+6
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
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Software as a Service (SaaS)
+5
Open-source workspace with full data ownership, offline access, multi-platform support, and deep customization through themes, plugins, and templates.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Self-Hosted
- Snapcraft
- Rust
- Flathub
+2
End-to-end encrypted notes, sketches, and files synced across devices with no personal info collected, using open-source, native apps for privacy and security.
Cost / License
- Freemium
- Open Source
Application type
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad
- Flathub
- Flatpak
+8
Task Management
Free multi-platform software for task management, time tracking, and personal project management. Seamless integration with Jira, GitHub, and GitLab.
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- Android Tablet
- Snapcraft
- Flathub
- F-Droid
- Flatpak
+3
Office Suites
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Android
- BSD
- Snapcraft
- Flathub
- PortableApps.com
- F-Droid
- Flatpak
+8
Open-source suite for editing documents, spreadsheets, presentations, forms, and PDF files with co-editing modes, plugin support, AI assistant, and integration across 40+ platforms.
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- HUAWEI AppGallery
- iPad
- Self-Hosted
- AppImageHub
- Snapcraft
- Flathub
- Samsung Galaxy Store
- Software as a Service (SaaS)
- Flatpak
- Cloudron
+7
CryptPad is a private-by-design alternative to popular office tools and cloud services. All the content stored on CryptPad is encrypted before being sent, which means nobody can access your data unless you give them the keys.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Software as a Service (SaaS)
- Self-Hosted
- Cloudron
+7
Encrypted Cloud Storage
Filen is a cutting-edge cloud storage provider that offers client-side, end-to-end, zero-knowledge encryption. Headquartered and operated entirely in Germany, Filen is at the forefront of combining comprehensive features with uncompromising privacy and security.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
+18
Emphasizes privacy with end-to-end encryption, Proton Drive safely stores, synchronizes, and shares files across devices via web and mobile applications.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Tor
+7
An open-source alternative to Google Drive, offering secure, self-hosted cloud storage with full control over your data, enhanced privacy, and enterprise-grade collaboration features.
Cost / License
- Free
- Open Source
Application types
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- Docker
Murena Workspace is your personal email account, your agenda and contacts, your drive on the cloud and your online office suite. All combined in one single service at murena.io, simple to use. It is powered by proven open-source software like NextCloud and OnlyOffice.
Koofr is a safe, secure and simple way to store, backup and share your documents, photos, videos and more. It offers up to 10 GB of free safe storage for your files with affordable upgrades and options to connect multiple cloud accounts.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Linux
- Online
- Android
- iPhone
- Android Tablet
- Windows Phone
- iPad
- Linux Mobile
- Google Chrome
- Rust
- F-Droid
- Software as a Service (SaaS)
- Docker
- Chromium
- Mozilla Firefox
+3
Encrypted Personal Information Managers (PIM): Email, Calendar, Contacts
End-to-end encrypted app for email, calendar, and contacts, requiring no personal data, with open source code and quantum-resistant security.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- iPad
- Flathub
- F-Droid
+1
Secure Swiss-based email with end-to-end encryption and zero third-party access. Available across devices, offering a free version to promote privacy.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- iPad
- Tor
- Flathub
- Snapcraft
+9
Twake is a real-time teamwork platform. It is a suite of collaborative tools that includes the specificities of some bestsellers (Slack, Trello, Google Drive...). We provide professional messaging, storage space, online collaborative editors (Words, Excel, PowerPoint), task...
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Self-Hosted
+2
AI
An open-source AI chatbot for tasks like code writing, email drafting in a privacy-friendly, ad-free interface, often requiring no sign-up.
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Online
- iPhone
- iPad
Privacy-first AI assistant with zero-access encryption, no logging or profiling, open-source code, and user-controlled conversations, subject to GDPR regulations.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad
- F-Droid
+5
Privacy-first AI assistant with chat, writing, transcription, summarization, email, and document tools, hosted in Switzerland and compliant with strict data privacy laws.
Cost / License
- Free
- Open Source
Application types
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Software as a Service (SaaS)
+4
Public platform for evaluating large language models using anonymous pairwise comparisons, crowd-sourced voting, real-time result updates, and global performance tracking.
Cost / License
- Free
- Proprietary
Application types
Platforms
- Online
Websites + Services everyone should be using
"Terms of Service; Didn't Read" (short: ToS;DR) is a project started in June 2012 to help fix the "biggest lie on the web": almost no one really reads the terms of service we agree to all the time.
Cost / License
- Free
- Open Source
Application type
Platforms
- Mac
- Online
- iPhone
- Microsoft Edge
- Vivaldi
- Google Chrome
- Safari
- Tor
- Opera
- Brave
- Mozilla Firefox
- Android
- F-Droid
+16
A directory of direct links to delete your account from web services. Find out how to delete over 800+ Accounts.
Website repository that checks what sites your email address was used on were compromised.
ScamAdviser helps over 6.5 million consumers every month to discover if a website is legitimate or a possible scam. You can now install the ScamAdviser browser extension to real time check if a website is legit or may contain malware, is phishing for your personal information or...
Cost / License
- Free
- Proprietary
Platforms
- Online
- Android
- Google Chrome
- iPhone
+2
Inspects files, domains, IPs, and URLs with 70+ scanners, sharing results with the security community. Free for end-users for non-commercial use.
Cost / License
- Free Personal
- Proprietary
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Microsoft Edge
- Google Chrome
- Software as a Service (SaaS)
- Mozilla Firefox
+1
PrivacySpy rates, highlights, and monitors privacy policies. Understand how your data is being used.
Windows Only
Intuitive interface for managing software via multiple Windows package managers. Supports install, update, bulk actions, backups, metadata review, and notifications.
Cost / License
- Free
- Open Source
Application types
Platforms
- Windows
- Chocolatey
+7
Honorable Mentions (not ready to be recommended, but worth keeping an eye on)
Mail Relay is Privacy Portal's email privacy service. It enables you to hide your personal email from third-parties, thus protecting your identity online and helping you reduce your digital footprint.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Online
- Software as a Service (SaaS)
+3
The best Discord alternative. Mezon is a Live, Work, and Play platform. It’s perfect for gaming and chilling with friends, or even building a global community. Customize your own space to talk, play, and hang out.
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- Software as a Service (SaaS)
+7
Peer-to-peer group chat platform syncing messages over Tor and IPFS, ensuring private, encrypted, decentralized collaboration without any central servers.
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad
NoChat is a privacy-first messaging and video calling app built on zero-knowledge architecture. Your messages are end-to-end encrypted so only you and your recipients can read them.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
- Online
Avoid the headache of passwords with Locker. The open-source Locker Password Manager safeguards your passwords and data, effortlessly logs you into sites, boosts your productivity with sharing feature and more.
Cost / License
- Paid
- Open Source
Application type
Platforms
- Online
- Mac
- Windows
- Linux
- iPhone
- Android
- iPad
- Android Tablet
- Software as a Service (SaaS)
- Self-Hosted
+1
Open-source, privacy-focused workspace merging notes, tasks, project management, Kanban, Pomodoro timer, interactive whiteboard, and real-time collaboration.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Self-Hosted
+3
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
+4
List will continually be updated periodically.
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