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

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


			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


      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

Marknote lets you create rich text notes and easily organise them into notebooks. You can personalise your notebooks by choosing an icon and accent color for each one, making it easy to distinguish between them and keep your notes at your fingertips. Your notes are saved as Markdown files in your Documents folder, making it easy to use your notes outside of Marknote as well as inside the app.
    

MarkNote

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

— 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

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

Focus on your writing with a clean, distraction-free markdown editor.Features:An UI tailored to comfortable writingA distraction-free modeDark, light and sepia themesEverything you expect from a text editor, such as spellchecking or document statisticsLive preview of what you writeExport 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

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)


      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

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

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

ghostwriter is a distraction-free text editor for Markdown featuring
       a live HTML preview as you type, theme creation, focus mode, fullscreen
       mode, live word count, and document navigation in an aesthetic writing
       environment.  It comes with the cmark-gfm Markdown processor built in, and
       can integrate with Pandoc, MultiMarkdown, Discount, and cmark 
       processors if they are installed.
    

ghostwriter

Distraction-free text editor for Markdown


            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

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

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

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

Frog

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

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

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

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

OCRFeeder is a document layout analysis and optical character recognition system.Given the images it will automatically outline its contents, distinguish between what's graphics and text and perform OCR over the latter. It generates multiple formats being its main one ODT.It features a complete GTK graphical user interface that allows the users to correct any unrecognized characters, defined or correct bounding boxes, set paragraph styles, clean the input images, import PDFs, save and load the project, export everything to multiple formats, etc.

OCRFeeder

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

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

Birdtray is a system tray new mail notification for Thunderbird, which does not require extensionsFeatures:Shows the unread email counter in the Thunderbird system tray icon.Optionally can animate the Thunderbird system tray icon if new mail is received.You can snooze new mail notifications for a specific time period.Birdtray checks the unread e-mail status directly by reading the Thunderbird email search database. This means it does not need any extensions, and thus is immune to any future extension API changes in ThunderbirdIt can hide the Thunderbird window, and restore it. There is also context menu for that.You can configure which accounts you want to check for unread emails onYou can choose different font colors for different email accounts. This allows you, for example, to have blue unread count for personal emails, red unread count for work emails, and green unread count if both folders have unread mail.Can launch Thunderbird when Birdtray starts, and terminate it when Birdtray quits (configurable).Can monitor that Thunderbird is running, and indicate it if you accidentally closed it.Has configurable "New Email" functionality, allowing pre-configured email templates.The feature to "Start Thunderbird when Birdtray starts" needs the flathub thunderbird installed by default. The default thunderbird directory is "~/.var/app/org.mozilla.Thunderbird/.thunderbird".

Birdtray

System tray new mail notification for Thunderbird

Money Manager Ex (MMEX) is a free/libre, open-source, cross-platform, easy-to-use personal financial and money management software. It helps organize finances and track cash flow.MMEX includes all the basic features that 90% of users would want to see in a personal finance application. The design goals are to concentrate on simplicity and user-friendliness – an application that can be used everyday.