
      Zotero [zoh-TAIR-oh] is a free, easy-to-use tool to help you collect,
      organize, cite, and share your research sources.
    
      
      NOTE: If your Zotero folder is not located inside your home directory (~/)
      and is outside your xdg-user-dirs, please grant permission to access that
      folder by the flatpak-override command (usage:
      "flatpak override --user --filesystem=/PATH/TO/ZOTEROFOLDER org.zotero.Zotero").
    
      
      NOTE: This flatpak is not verified by, affiliated with, or supported by the Zotero project.
    
    

Zotero


			Cryptomator provides easy-to-use, transparent, client-side encryption for your cloud.
			It protects your documents from unauthorized access and prying eyes, while you will still be able to view and edit your documents locally.
			By not requiring any registration or account and performing all encryption locally, it gives you back control over your data and ensures your privacy.
			Cryptomator is offered for all major platforms (including Android and iOS).
		
      
			Cryptomator encrypts file contents and names using the widespread industry standard AES.
			Your passphrase is protected against brute forcing attempts using scrypt.
			Additionally, directory structures get obfuscated.
			For more info about the Cryptomator encryption scheme, check out the online documentation.
		
      
			Cryptomator is a free and open-source software licensed under the GPLv3.
			This allows anyone to check our code.
			Thus, it is impossible to introduce backdoors for third parties or to hide vulnerabilities, so you do not need to trust Cryptomator.
			Also, vendor lock-ins are impossible.
			Even if we decided to stop development: The source code is already cloned by hundreds of other developers and development can be picked up by others.
		
    

Cryptomator

Encryption made easy and optimized for the cloud

Use the power of mind-mapping to make your ideas come to life.
      
        Quickly create visual mind-maps using the keyboard and automatic layout.
        Choose from many tree layout choices.
        Support for Markdown formatting.
        Support for insertion of Unicode characters.
        Add notes, tasks and images to your nodes.
        Add node-to-node connections with optional text and notes.
        Stylize nodes, links and connections to add more meaning and improve readability.
        Add stickers and node groups to call out and visibly organize information.
        Quick search of node and connection titles and notes, including filtering options.
        Zoom in or enable focus mode to focus on certain ideas or zoom out to see the bigger picture.
        Enter focus mode to better view and understand portions of the map.
        Unlimited undo/redo of any change.
        Automatically saves in the background.
        Colorized node branches.
        Open multiple mindmaps with the use of tabs.
        Built-in and customizable theming.
        Gorgeous animations.
        Import from OPML, FreeMind, Freeplane, PlainText (formatted), Markdown, Outliner, PlantUML, Portable Minder, filesystem, and XMind formats.
        Export to CSV, FreeMind, Freeplane, JPEG, BMP, SVG, Markdown, Mermaid, OPML, Org-Mode, Outliner, PDF, PNG, PlainText, PlantUML, Portable Minder, filesystem, XMind and yEd formats.
        Printer support.
      
    

Minder


      The Proton Mail Bridge is an application for paid users that runs on your computer in the background and seamlessly encrypts and decrypts your mail as it enters and leaves your computer. It allows for full integration of your Proton Mail account with any program that supports IMAP and SMTP such as Microsoft Outlook, Mozilla Thunderbird and Apple Mail.
    
      
      Note: This is a community package of the Proton Mail Bridge not officially supported by Proton. Report bugs through linked issue tracker.
    
    

Proton Mail Bridge

Seamlessly encrypts and decrypts your mail as it enters and leaves your computer

NOTE: This release is not verified by, affiliated with, or supported by Standard Notes Ltd.
      Standard Notes is a simple and private notes app. It syncs your notes securely across all your devices, including
      your Android devices, Windows, iOS, Linux, and Web.
      Private means your notes are end-to-end encrypted, so only you can read your notes. Even we can't read the contents
      of your notes.
      Simple means it does one job and does it well. Standard Notes is a safe and lasting place for your life's work. Our
      focus is making it easy to write notes wherever you are and syncing them with encryption to all your devices.
      Our users love us for:
      
        Personal Notes
        Tasks &amp; Todos
        Passwords &amp; Keys
        Code &amp; Technical Procedures
        Private Journal
        Meeting Notes
        Cross-platform Scratchpad
        Books, Recipes, &amp; Movies
        Health &amp; Fitness Log
      
      Standard Notes comes free with:
      
        Seamless sync across all your devices, with easy to use applications on Android, Windows, Linux, iPhone, iPad,
          Mac,
          and web browsers.
        Offline access, so you can access your downloaded notes even without a connection.
        No limit on number of devices.
        No limit on number of notes.
        Passcode lock protection, along with fingerprint protection.
        A tagging system to organize your notes (like #work, #ideas, #passwords, #crypto).
        The ability to pin, lock, protect, and move notes to trash, which allows you to recover deleted notes until the
          trash is emptied.
      
      Standard Notes is completely open-source, which means when we say your notes are encrypted with AES-256 encryption,
      and that only you can read your notes, you don't have to take our word for it. Our code is open to the world to
      audit.
      We made Standard Notes simple because longevity is important to us. We want to make sure we're here, protecting your
      notes, for the next hundred years. You shouldn't have to find a new notes app every year.
      To sustain our development, we offer an optional paid program called Standard Notes Extended. Extended gives you
      access to powerful tools including:
      
        Productivity editors (like Markdown, Code, Spreadsheets)
        Beautiful themes (like Midnight, Focus, Solarized Dark)
        Powerful cloud tools including daily backups of your encrypted data delivered to your email inbox every day, or
          backed up to your cloud provider (like Dropbox and Google Drive).
      
      You can learn more about Extended at standardnotes.com/extended.
    

Standard Notes

A simple and private place for your notes, thoughts, and life's work

BlueMail by Blix is a free, beautifully designed, universal email app, capable of managing an unlimited number of mail accounts from various providers, allowing for smart push notifications and group emailing while enabling personalization across multiple email accounts. The BlueMail app connects directly to your mail server and is the perfect replacement for your stock email app.
      NOTE: This package is not verified by, affiliated with, or supported by Blix Inc.
    

BlueMail

Unleash the power of PDF4QT: Your go-to open source PDF editor. Beyond its capabilities in encryption, optimization, advanced annotations, editing, and signing, PDF4QT offers an extensive range of features to enhance your PDF experience. With intuitive PDF viewing/editing applications and a handy command-line tool, PDF4QT streamlines your PDF interactions. Discover its vast potential today.

PDF4QT


      Notesnook is a free (as in speech) &amp; open source note taking app
      focused on user privacy &amp; ease of use. To ensure zero knowledge
      principles, Notesnook encrypts everything on your device using
      XChaCha20-Poly1305 &amp; Argon2.
    
      
      Notesnook is our proof that privacy does not (always) have to come at the
      cost of convenience. Our goal is to provide users peace of mind &amp; 100%
      confidence that their notes are safe and secure. Our decision to go fully
      open source is one of the most crucial steps towards that.
    
      
      Notesnook is a user focused note taking tool meant to offer a fully
      end-to-end encrypted note taking experience for everyone. This includes
      the majority of our less tech savy users who just want to take notes
      without all the hassle.
    
      
      In short, Notesnook aims to offer a complete replacement for other
      insecure note taking tools like Evernote &amp; Notion. Because let's be
      honest, these tools offer great productivity but at a great cost to your
      privacy.
    
    

Notesnook

A fully open source & end-to-end encrypted note taking alternative to Evernote

Focus on your writing with a clean, distraction-free markdown editor.
      Features:
      
        An UI tailored to comfortable writing
        A distraction-free mode
        Dark, light and sepia themes
        Everything you expect from a text editor, such as spellchecking or document statistics
        Live preview of what you write
        Export to all kind of formats: PDF, Word/Libreoffice, LaTeX, or even HTML slideshows
      
    

Apostrophe

AppFlowy is a privacy-first open source workspace for your notes, tasks, databases, and more.
      Built for individuals who care about data security and mobile experience
      
        100% control of your data
        Download and install AppFlowy on your local machine
        You own and control your personal data
      
      Built for teams that need more control and flexibility (Coming Soon):
      
        100% data control You can host AppFlowy wherever you want
        No vendor lock-in
      
      Extensively extensible
      
        For those with no coding experience, AppFlowy enables you to create apps that suit your needs
        It's built on a community-driven toolbox, including templates, plugins, themes, and more
      
      Truly native experience
      
        Faster, more stable with support for offline mode
        It's also better integrated with different devices
        Moreover, AppFlowy enables users to access features and possibilities not available on the web
      
    

AppFlowy

Free editor for PDF documents. Complete editing of PDF documents is possible with PDFedit.You can either change raw pdf objects (for advanced users) or use predefined gui functions.---------- DISCLAIMER ----------This is legacy software which uses old unmaintained libraries (Qt3, Xpdf 3.02) for which there are no security backports, therefore you should NOT open any untrusted pdf files with this software. Because of this, we have restricted the application to only have access to the standard "Downloads" and "Documents" folders, so you may need to copy/move your pdf file there so you can open it with PDFedit.

PDFedit

PDF editor with ability to browse/edit the tree of raw pdf objects

— Manage multiple accounts at a time, with a familiar tab interface— Easily filter transactions by type, group, or date— Easily repeat transactions, such as bills that occur every month— Transfer money from one account to another— Export an account as a CSV file and import a CSV, OFX or QIF file to bulk add transactions to an account

Denaro

O20 is the fast and streamlined office suite for Linux, built on Qt5 and KDE, and designed to be familiar to O365 users and yet better. With O20, you can create and edit all your documents, never having to worry about losing them because of the O20 "AutoSave" feature.Now here with O20.Word on Flathub, you can experience O365 and MS Word on your Linux desktop, complete with ODT and XHTML support, AutoSave, O20 Assistant, Syntax Highlighting for developers, and Styles, while being accessible on all Linux distros with Snapcraft and Flatpak support. O20.Word only has the things you need, and is perfect for drafting a novel, writing a simple essay, editing code, and reading documents with minimal formatting.

O20.Word

Open Source MS Word 2019 clone... for Linux

An Electron wrapper around Notion
      NOTE: This wrapper is not verified by, affiliated with, or supported by Notion Inc.
    

Cohesion


      TeXstudio is an integrated writing environment for creating LaTeX documents. It integrates editing, building and viewing into a single, user-friendly interface.
    
      
      Our goal is to make writing LaTeX as easy and comfortable as possible.
      This means you can focus on your content with the help of a powerful set of features:
    
      
        Easy source code navigation: A structure view, clickable links and a cursor history
        Detailed syntax highlighting
        Auto-completion
        Live checking for spelling, grammar, citations, references, syntax and packages
        Innovative table editing
        Clear display of LaTeX errors and warnings (in-editor and as a list)
        Integrated PDF viewer with (almost) word-level syncing
        Live-updating inline preview for formulas and code segments
        Scripting support
      
      Requires either TeX Live being installed on the system from your distribution's repositories or the TeX Live Flatpak which you can install by running 'flatpak install flathub org.freedesktop.Sdk.Extension.texlive//23.08'
    

TeXstudio

Ideas Grow on Trees.
      Xmind is a full-featured mind mapping and brainstorming app. Like a Swiss Army Knife for your brain, spark creativity and improve thinking skills. 100+ million installations on the planet.
    

Xmind (2024)

Crow Translate is a simple and lightweight translator written in C++ / Qt that allows you to translate and speak text using Google, Yandex, Bing, LibreTranslate and Lingva translate API.Features:Translate and speak text from screen or selectionSupport 125 different languagesLow memory consumption (~20MB)Highly customizable shortcutsCommand-line interface with rich optionsD-Bus APIAvailable for Linux and Windows

Crow Translate


            Koodo Reader is an all-in-one ebook reader that can help you better manage and study
            your ebooks. It's free and open-source.
        
      
        Extensive formats support
        Save your data to Dropbox or Webdav
        Customize the source folder and synchronize among multiple devices using OneDrive,
                iCloud, Dropbox, etc.
        Single-column, two-column, or continuous scrolling layouts
        Text-to-speech, translation, progress slider, touch screen support, batch import
        Add bookmarks, notes, highlights to your books
        Adjust font size, font family, line-spacing, paragraph spacing, background color,
                text color, margins, and brightness
        Night mode and theme color
        Text highlight, underline, boldness, italics and shadow
      
    

Koodo Reader

PDF Slicer is a simple application to extract, merge, rotate and reorder pages of PDF documents. The operations can be performed on single pages or on selections/ranges of pages, and it has undo/redo support.
    

PDF Slicer

A simple tool to extract, merge, rotate and reorder pages of PDF documents

MarkText is a free and open-source realtime preview markdown editor which support both CommonMark Spec and GitHub Flavored Markdown Spec. It is a concise text editor, dedicated to improving your writing efficiency.Features:Realtime preview (WYSIWYG) and a clean and simple interface to get a distraction-free writing experienceGitHub Flavored Markdown like task-lists, tables, links and emojisMarkdown extensions such as math expressions (KaTeX) and front matterCode fence for all the popular languagesSupport paragraphs and inline style shortcuts to improve your writing efficiencyVarious edit modes and themes: source code mode, typewriter mode, focus mode

MarkText

A simple, efficient application for small manipulations in PDF files.Compress PDF (multiple resolutions)Split PDF (All pages or page ranges)Merge PDFConvert PDFIn recent versions of ImageMagick has been added a security policy that blocks manipulations in PDF files. This affects PDFTricks operations. To correct this change the settings of your ImageMagick installation. Check the homepage for instructions.

PDF Tricks

Monero is a private, secure, untraceable, decentralised digital currency. You
            are your bank, you control your funds, and nobody can trace your transfers
            unless you allow them to do so.
      Privacy: Monero uses a cryptographically sound system to allow you to send
            and receive funds without your transactions being easily revealed on the
            blockchain (the ledger of transactions that everyone has). This ensures that
            your purchases, receipts, and all transfers remain absolutely private by
            default.
      Security: Using the power of a distributed peer-to-peer consensus network,
            every transaction on the network is cryptographically secured. Individual
            wallets have a 25 word mnemonic seed that is only displayed once, and can be
            written down to backup the wallet. Wallet files are encrypted with a passphrase
            to ensure they are useless if stolen.
      Untraceability: By taking advantage of ring signatures, a special property of
            a certain type of cryptography, Monero is able to ensure that transactions are
            not only untraceable, but have an optional measure of ambiguity that ensures
            that transactions cannot easily be tied back to an individual user or computer.
    

Monero GUI

Monero: the secure, private, untraceable cryptocurrency


    Handle your email, calendar, contacts and other personal data with Kontact. Kontact groups everything together in one place and helps you manage your communications, organize your day and work with your colleagues.
    
      
    Kontact unifies several personal information management applications into a single window to give you the best possible experience and boost your productivity. With Kontact you can use all the tools of our powerful suite in one place. Unlike proprietary web applications we value your privacy and support open standards, which is why Kontact gives you full control over your data. You can of course also access your data offline if you want to.
    
      Kontact consists of several well-integrated components:
      
        KMail - a powerful and feature-rich email client with support for a wide range of email providers.
        KOrganizer - a calendar and scheduling component of Kontact which is able to work with NextCloud, Kolab, Google Calendar and other calendaring services.
        KAddressBook - an easy to use contact management tool that can synchronize contacts with many popular services.
        Akregator - a news reader with powerful search and archiving functionality.
        KNotes - a simple program that lets you write the computer equivalent of sticky notes.
      
    

Kontact

Handle all your emails, calendars, contacts and more within a single window

Application for Mind Mapping, Knowledge Management, Project Management. Develop, organize and communicate your ideas and knowledge in the most effective way.Freeplane is a free and open source software application that supports thinking, sharing information and getting things done at work, in school and at home. The software can be used for mind mapping and analyzing the information contained in mind maps.

Freeplane

Mind Mapping, Knowledge Management, Project Management. Develop, organize and communicate your ideas and knowledge in the most effective way


       PDF Mix Tool is a simple and lightweight application that allows you to
       perform common editing operations on PDF files.
    
      Base operations it can perform are the following:
      
        Merge two or more files specifying a page set for each of them
        Rotate pages
        Composite more pages onto a single one (N-up)
        Combinations of all of the above
      
      
      Besides, it can also mix files alternating their pages, generate booklets,
      add white pages to a PDF file, delete pages from a PDF file, extract pages
      from a PDF file, edit the PDF document information.
    
    

PDF Mix Tool

An application to perform common editing operations on PDF files

Trilium Notes is a hierarchical note-taking application with focus on building large personal knowledge bases.
      Features:
      
        Rich WYSIWYG note editing including e.g. tables, images and math with markdown autoformat
        Support for editing notes with source code, including syntax highlighting
        Notes can be arranged into arbitrarily deep tree
        A single note can be placed into multiple places in the tree (see cloning)
        Fast and easy navigation between notes, full text search and note hoisting
        Seamless note versioning
        Note attributes can be used for note organization, querying and advanced scripting
        Synchronization with self-hosted sync server
        Sharing (publishing) notes to public internet
        Strong note encryption with per-note granularity
        Relation maps and link maps for visualizing notes and their relations
        Scales well in both usability and performance upwards of 100 000 notes
        Evernote and Markdown import &amp; export
        Web Clipper for easy saving of web content
        REST API for automation
      
    

Trilium Notes

AbiWord is a free word processing program. It is suitable for a wide variety of word processing tasks but remain focused on word processing.AbiWord is meant to remain relatively lightweight and support many file formats.

AbiWord

Pods is a frontend for podman. It uses libadwaita for its user interface and strives to meet the design principles of GNOME.With Pods you can, among other things:Connect to local and remote Podman instances.Easily overview images, containers and pods.View prepared information about images, containers, and pods.Inspect images, containers and pods.View and search container logs.Monitor processes of containers and pods.Download images and build them using Dockerfiles.Create pods and containers.Control the lifecycle of containers and pods (in bulk) (start, stop, pause, etc.).Delete images, containers, and pods (in bulk).Prune images.Rename containers.

Pods


      Scrivano is a note-taking application aimed at those who prefer handwriting over typing. It offers a simple and easy to use interface to write down your thoughts and ideas. The app gives you an infinite vertical canvas (but limited horizontal space) without sacrificing the ability to easily export your notes in traditional printing formats (e.g. A2, A3, A4, etc...).
    
      
      Here is a summary of the most important features:
    
      
        4 different paper backgrounds to choose from: Plain, Lined, Grid or Dotted with customisable spacing and backgrounds.
        Grid Snapping: in Scrivano you can toggle the grid snapping feature so that your drawings will automatically snap to grid lines in the background. This is very useful to easily draw tables, diagrams and lines.
        Automatic filling of strokes: toggle the paint bucket in the toolbar to fill your drawing shapes and strokes.
        Stickers: save your frequently used symbols and diagrams, so you can easily drag and drop whenever you need them.
        Insert images: paste or drag and drop any image on the canvas to unleash your creativity!
        Offline saving: save your notes anywhere on your main drive, so you can manage them however you please.
        Laser: Scrivano offers a special laser tool to quickly draw over your notes. Incredibly useful when sharing your screen or presenting something!
        Annotate PDF files: You can import your PDF books, lecture slides, articles and documents to annotate them using Scrivano's built-in inking tools.
      
      
      NOTE: The flatpak version of the app runs in a sandbox environment and it can only read/write files from these folders: xdg-desktop, xdg-documents, xdg-download and xdg-pictures. If you want to circumvent this for more freedom, you can use Flatseal to override these restrictions.
    
    

Scrivano for Handwritten Notes

A note-taking application for those who prefer handwriting over typing

Extract text from images, websites, videos, and QR codes by taking a picture of the source.