Open Source Windows Productivity Software

Browse free open source Productivity software and projects for Windows below. Use the toggles on the left to filter open source Productivity software by OS, license, language, programming language, and project status.

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  • 1
    Notepad Next

    Notepad Next

    A cross-platform, reimplementation of Notepad++

    A cross-platform, reimplementation of Notepad++. Though the application overall is stable and usable, it should not be considered safe for critically important work. There are numerous bugs and half-working implementations. Pull requests are greatly appreciated. Windows packages are available as an installer or a stand-alone zip file on the release page. The installer provides additional components such as an auto-updater and Windows context menu integration.
    Downloads: 368 This Week
    Last Update:
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  • 2
    Digital Clock 4

    Digital Clock 4

    beautiful customizable clock with plugins

    Very customizable beautiful clock. There are 2 versions exist (they may co-exist): - Digital Clock 4 - discontinued, not recommended - Digital Clock 5 - current version, replacement for Digital Clock 4 Digital Clock 4 final version is 4.7.9 Digital Clock 5 current version is 5.1.8 Nothing special is required to start using this clock. Just launch it and enjoy! When it starts, apart from the clock itself, a small tray icon appears. This tray icon can be used to call the clock configuration dialog. Also this dialog can be called using clock context menu. Sources (v5) are hosted on GitHub: https://github.com/Kolcha/DigitalClock5 You can create your own skin! See this link for details: https://sourceforge.net/p/digitalclock4/wiki/How%20to%20create%20skin/ NOTE: do NOT download any .rar or .exe files marked as my software, these files are NOT made by me and I'm not responsible for their content
    Leader badge
    Downloads: 1,673 This Week
    Last Update:
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  • 3
    Deskflow

    Deskflow

    Share a single keyboard and mouse between multiple computers

    Deskflow is a lightweight productivity tool designed to streamline window and workspace management. It features hotkey-driven app launching, workspace switching, window snapping, search快捷启动, and minimal UI. Built with modern frameworks (likely Electron or Qt) and geared toward power users wanting efficient workflow control.
    Downloads: 211 This Week
    Last Update:
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  • 4
    ShareX

    ShareX

    Screen capture, file sharing and productivity tool

    ShareX is a lightweight free and open source program that allows you to capture or record any area of your screen and share it with a single press of a key. ShareX offers numerous methods of capture including full screen, monitor, freehand and so much more. It also features plenty of customizable after-capture tasks and supports more than 80 different image, text, and file hosting services, as well as many URL shortening and sharing services.
    Downloads: 38 This Week
    Last Update:
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  • 5
    QOwnNotes

    QOwnNotes

    QOwnNotes is a plain-text file notepad and todo-list manager

    QOwnNotes is a fully open-source markdown-focused note-taking and personal information manager that runs natively on Linux, macOS, and Windows, with a strong emphasis on plain-text storage and cross-device synchronization. Because all notes are stored as markdown files in user-controlled directories, you avoid vendor lock-in and can sync through services like Nextcloud, ownCloud, Dropbox, or Git without proprietary cloud dependency. The application is optimized for performance and minimal footprint, so it runs smoothly even with large note libraries, and it includes features like a live markdown preview panel that lets you see rendered text alongside raw markdown as you type. QOwnNotes supports hierarchical folders and tagging, making it easy to organize, filter, and retrieve information quickly, and it also integrates to-do lists and task markers directly in your notes.
    Downloads: 16 This Week
    Last Update:
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  • 6
    LKY Office Tools

    LKY Office Tools

    Automate downloading, installing, and activating Office versions

    LKY_OfficeTools is an open‑source, green (ad‑free), and safe .NET tool that automates downloading, installing, and activating legitimate Microsoft Office versions. It provides both console and GUI (Mocreak) versions for seamless, one‑click Office deployment. Supports optional components installation: Word, Excel, PowerPoint, Outlook, OneNote, Access, Visio, Project, Publisher, Teams, OneDrive, Skype, etc. Detects system architecture and downloads matching Office builds. Supports at least 43 UI languages and multiple installation methods (online or local).
    Downloads: 7 This Week
    Last Update:
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  • 7
    Old Win32 Notepad

    Old Win32 Notepad

    Old Windows Notepad remake

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    Downloads: 162 This Week
    Last Update:
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  • 8
    ffsend

    ffsend

    Easily and securely share files from the command line

    Easily and securely share files and directories from the command line through a safe, private and encrypted link using a single simple command. Files are shared using the Send service and may be up to 1GB. Others are able to download these files with this tool, or through their web browser. All files are always encrypted on the client, and secrets are never shared with the remote host. An optional password may be specified, and a default file lifetime of 1 (up to 20) download or 24 hours is enforced to ensure your stuff does not remain online forever. This provides a secure platform to share your files. History tracking your files for easy management, ability to use your own Send hosts. Inspect or delete shared files, accurate error reporting. Streaming encryption and uploading/downloading, very low memory footprint. Intended for use in scripts without interaction.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 9
    KeyParaStocX

    KeyParaStocX

    Set styles to words and create a Table of Contents in a click

    KeyParaStocX (Keyword-based Paragraph Styling and Table of Contents eXtension) is a LibreOffice/Apache OpenOffice/OpenOffice.org extension that searches for the configured keywords in a text, changes their style and builds a Table of Contents for them, up to 7 levels. The keywords and their target styles can be configured by the users and used for every document they open. The extension integrates into Writer options and is independent of the operating system (should work on all). See the project homepage https://keyparastocx.sourceforge.io and the project Wiki in the menu above.
    Downloads: 83 This Week
    Last Update:
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  • 10
    Time_limit

    Time_limit

    A windowed/full-screen countdown timer.

    A windowed / full-screen countdown timer. Colour and font size changes are used as warnings. Progress-bar gives a glance at the time stream. Three different modes are available: - time left; - time passed; - ordinary clock. When the time is over several possibilities are available: - to show the defined message; - to continue count the time; - to launch another application; - to close the count-down timer. Useful for speech, lecture or presentation timing. Colour / font / time limits can be changed using settings window and hot-keys. To change current time use the mouse wheel. By clicking on progress-bar, the timer mode is toggled.
    Downloads: 40 This Week
    Last Update:
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  • 11
    Notesnook

    Notesnook

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

    Notesnook makes it impossible for anyone to spy on your notes. Unlike Evernote and other note taking apps, your data is private, not open for everyone to see. Ditch other note taking apps that don't care about your data privacy. With app lock and private notes vault, your personal diary & journal are always safe. Worried that your friend will read your private notes? Notesnook fixes that by having an app lock built-in. Use a pin or biometrics to protect your notes. Protect your online journal or personal diary with an extra layer of security. Your notes vault is a super secure way to store your passwords, credentials & other secrets. Free or Pro, you get the same level of privacy. Making privacy a paid feature means only the privileged few deserve it but privacy is your right. And rights don't have a price tag, or do they? To verify that your notes are actually encrypted (and we aren't just lying), you can use our open source tool, Vericrypt.
    Downloads: 2 This Week
    Last Update:
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  • 12
    Lifeograph

    Lifeograph

    Advanced personal note taking application

    Lifeograph is a diary program to take personal notes on life. It has all essential functionality expected in a diary program and strives to have a clean and streamlined user interface.
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    Downloads: 29 This Week
    Last Update:
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  • 13
    Notepad3

    Notepad3

    Light-weight Scintilla-based text editor with syntax highlighting

    Notepad3 is a fast and light-weight Scintilla-based text editor with syntax highlighting. Notepad3 is an excellent replacement for the default Windows text editor. Notepad3 offers many extra features over Notepad. It has a small memory footprint, but is powerful enough to handle most programming jobs.
    Downloads: 17 This Week
    Last Update:
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  • 14

    Docear

    An Academic Literature Suite

    Docear (pronounced dog-ear) is what we call an “academic literature suite”. It integrates everything you need to search, organize and create academic literature in a single application: a digital library, reference manager, PDF and file manager, note taking and mind mapping. And the best: Docear works seemlessly with many existing tools like Mendeley, Microsoft Word, and Foxit Reader. Docear is free and open source, based on Freeplane, funded by the German Federal Ministry of Technology and developed by scientists from around the world, among others from OvGU, and the University of California, Berkeley.
    Leader badge
    Downloads: 6 This Week
    Last Update:
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  • 15
    Polr

    Polr

    A modern, powerful, and robust URL shortener

    Polr is a quick, modern, and open-source link shortener. It allows you to host your own URL shortener, to brand your URLs, and to gain control over your data. It's also GPLv2+ licensed. Read the installation documentation and get running in no time. Modern and simple interface to manage your links and control your instance. Run-on your own domain to adjust your branding to perfection. Use Polr out of the box or fork the code to tweak it to to your needs. Customize your instance's shortening permissions, redirects, or even its theme. Semantic REST API for integration with other services. Assign new API keys to users automatically, or generate them manually. Create new links or look up existing links without modifying your breaking your existing code. For more information, see API docs.
    Downloads: 1 This Week
    Last Update:
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  • 16
    soundscape-qt

    soundscape-qt

    Desktop soundscape application

    soundscape-qt is an open-source desktop application to play a mix of sounds, e.g. natural sounds produced by animals or wind and water. soundscape-qt comes with two example soundscapes. Use mouse to right-click in the main window or on the tray icon to access the application menu where you can add or remove soundtracks and change their settings. Use the Quit item from the application menu to finish the application. Pressing the close window button will just minimize it to the tray.
    Downloads: 1 This Week
    Last Update:
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  • 17
    Timepiece

    Timepiece

    Alarm Clock for Your Desktop

    Timepiece is an alarm clock that runs on your desktop and includes a stopwatch and a countdown timer. All three timepieces can run simultaneously. You can choose your own sound file to start playing at the set alarm time. The sound for the countdown timer is also customisable. The alarm clock has a snooze feature.
    Downloads: 7 This Week
    Last Update:
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  • 18
    Intention Repeater MAX

    Intention Repeater MAX

    Repeating your Intentions to aid in manifestation

    Please see the README.txt. The ServitorConnect 4443 and Python Daemon and Intention Repeater Android are better because repeating once-per-hour is better than millions of times per second (or even 3Hz). The archive bundle includes binaries and source code for: MAX and Simple Intention Repeaters CUDA version for Windows/Linux Memory Frequency Generator Multi-Format to WAV Repeater Android app Sourcecode File/Image Writers Nesting Files Creator Prayer Wheel Spiritual Chat Tarot WiFi Broadcast Whether you're seeking to manifest abundance, enhance your spiritual journey, or promote overall well-being, Intention Repeater MAX empowers you to harness the incredible strength of intention repetition. Compatible with Windows, macOS, and Linux. Download now and experience the life-changing benefits for yourself! 🙌
    Downloads: 9 This Week
    Last Update:
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  • 19
    Notepad X
    Notepad X is an alternative open source text editor for Microsoft Windows, with a lot of customization options created to help users managing text documents featuring tab navigation.
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    Downloads: 5 This Week
    Last Update:
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  • 20
    Jarnal is a plattform-indepenent programm written in Java for notetaking, sketching and PDF-/picture-annotating. It works like a normal notepad with the difference of being digital. It is thought to be used with a stylus on tablet-pcs.
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    Downloads: 4 This Week
    Last Update:
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  • 21
    FreeplaneGTD+

    FreeplaneGTD+

    Freeplane add-on for task management and memo taking

    Freeplane is a widely used mind mapping tool. GTD is a time management methodology by David Allen. Freeplane GTD is an addon, that can collect tasks specified in a mindmap, thus allowing the users of Freeplane to use the concepts of GTD in their mind
    Downloads: 10 This Week
    Last Update:
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  • 22
    Little Alarm Clock
    Little Alarm Clock is an open source program that features a snooze button, automatic startup, and audio file playback. It is licensed under the GNU General Public License.
    Downloads: 5 This Week
    Last Update:
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  • 23

    Birthday reminder

    Tool to remind you to upcoming birthdays and events.

    Downloads: 4 This Week
    Last Update:
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  • 24
    UnifontEX

    UnifontEX

    An extended fork of GNU Unifont with a focus on high compatibility.

    An extended fork of GNU Unifont with a focus on high compatibility. Now final!
    Downloads: 4 This Week
    Last Update:
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  • 25
    Mindfulness at the Computer

    Mindfulness at the Computer

    Helps you stay mindful of your breathing while using your computer

    This application reminds you to take breaks from the computer, helps you remember to stay in touch with and be mindful of your breathing and body while sitting at the computer, and helps you concentrate on breathing in and out when you need a breathing pause.
    Downloads: 6 This Week
    Last Update:
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