Open Source Windows Productivity Software
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Productivity Software for Windows
View 511 business solutionsBrowse 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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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. -
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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 -
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A simple notepad-like text editor with many features. It is designed to be a small and fast.
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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. -
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Gnaural
Entrain your brain!
A programmable audio generator intended as an aural aid to meditation, implementing the binaural beat principle as described in Gerald Oster's Oct. 1973 Scientific American article "Auditory Beats in the Brain." -
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Xournal++
A handwriting notetaking software with PDF annotation support
Xournal++ (/ˌzɚnl̟ˌplʌsˈplʌs/) is an open-source and cross-platform note-taking software that is fast, flexible, and functional. A modern rewrite and a more feature-rich version of the wonderful Xournal program. Support for pressure-sensitive stylus and drawing tablets (Wacom, Huion, XP-Pen, etc.) Robust and customizable pen, highlighter and eraser tools, allowing you to write how you want to write. Use layers to make complex notes that are still pleasant to work with. Keep track of the notes by using page previews. Add images and create various shapes, from circles to splines to axis. Snap objects to rectangular grid or degrees of rotation. Create anything from differential equations to electrical circuits or the structural formula of molecules using our built-in LaTeX editor. Customize your toolbar to create a new layout, tailor-made for you. -
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Joplin
Open source note taking and to-do app with synchronization
Joplin is a free and open source note-taking and to-do application that can handle a large number of notes in Markdown format, organize them into notebooks and synchronize them with various cloud services. All notes can also be copied, tagged, searched and modified directly from the app or through your own text editor. Notes that are exported from Evernote can be imported into Joplin, be it formatted content, resources, complete metadata or plain Markdown files. When notes are synchronized with cloud services, notebooks, tags and other metadata can easily be moved, inspected or backed up as plain text files. Supported cloud services include Nextcloud, OneDrive, Dropbox and WebDAV. Joplin is available for Windows, Linux, macOS, iOS and Android, with three types: desktop, mobile and terminal. All of them have similar user interfaces and can be synchronized with each other. -
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Obsidian
Community plugins list, theme list, and releases of Obsidian
The Obsidian Releases repository provides the official distribution builds and installers for Obsidian, the popular markdown-based knowledge management and personal wiki application. Obsidian itself is a powerful, offline-first note-taking tool that helps users build interconnected knowledge graphs using markdown files stored locally on their devices, with plugins and community themes for extensibility. This repository houses versioned compiled binaries and packages for multiple platforms such as Windows, macOS, and Linux, enabling users to download stable or nightly builds directly without needing to build the app from source. By maintaining clear version history and downloadable artifacts, it makes it easy for individuals and organizations to audit, rollback, or pin specific Obsidian releases for workflows that depend on stability or particular plugin compatibility. -
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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. -
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Alfresco Community Edition
Open Source Enterprise Content Management ECM
The open source Enterprise Content Management (ECM) software that handles any type of content, allowing users to easily share and collaborate on content. -
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TagSpaces
TagSpaces is an offline, open source, document manager with tagging
TagSpaces is a free, no vendor lock-in, open source application for organizing, annotating and managing local files with the help of tags. It features advanced note taking functionalities and some capabilities of to-do apps. The application is available for Windows, Linux, Mac OS and Android. We provide a web clipper extension for Firefox, Edge and Chrome for easy collecting of online content in the form of local files. File and folder management - TagSpaces provides a convenient user interface for browsing, viewing and man files and folders. The application supports two ways for tagging files. The default one embeds the tags directly in the name of the file, the other one uses a so called sidecar files for persisting the tags. The search functionality supports fuzzy functionality and can filter your locations for files and folders containing one or more tags. -
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sigma-file-manager
"Sigma File Manager" is a free, open-source, quickly evolving app
"Sigma File Manager" is a free, open-source, quickly evolving, modern file manager (explorer/finder) app for Windows and Linux. Designed, developed, and maintained by Aleksey Hoffman | Twitter | Reddit. Create the best existing intelligent file manager & productivity app that will significantly speed up your workflow, provide you with advanced tools, and keep your data safe. Find any file/directory on your computer in just a few seconds. It also implements a typo correction system, allowing you to find files even when the search query includes typos, wrong case, wrong word order, missing words, missing symbols, and missing file extension. Create separate workspaces with their own tabs and pre-defined actions, allowing you to quickly switch between them. Actions can perform different operations, e.g. open a website, run a script, open a file in a specific program, etc. -
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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. -
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Open Notebook
An Open Source implementation of Notebook LM with more flexibility
Open Notebook is an open-source, privacy-focused alternative to Google’s Notebook LM that gives users full control over their research and AI workflows. Designed to be self-hosted, it ensures complete data sovereignty by keeping your content local or within your own infrastructure. The platform supports 16+ AI providers—including OpenAI, Anthropic, Ollama, Google, and LM Studio—allowing flexible model choice and cost optimization. Open Notebook enables users to organize and analyze multi-modal content such as PDFs, videos, audio files, web pages, and Office documents. It combines full-text and vector search with context-aware AI chat to deliver insights grounded in your own research materials. With advanced features like multi-speaker podcast generation, customizable content transformations, and a comprehensive REST API, Open Notebook provides a powerful and extensible research environment. -
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Notable
The Markdown-based note-taking app that doesn't suck
Notes are written in Markdown, plus you can write KaTeX expressions, Mermaid diagrams and more, check out our Markdown cheatsheet. Notable provides a very powerful Markdown editor, it's the same one VS Code uses in fact, so features like multi-cursors, a minimap and best-in-class syntax highlighting are built-in. Notes and attachments are simply stored on your disk, this is extremely portable and powerful: you could edit your notes via a third-party editor on mobile, have them synchronized via Dropbox, use Git, run a regex-based search and replace etc. A dark theme is also available. In the future support for custom themes will be added as well. Zen mode provides a minimalistic editing and reading experience, hiding everything that's not necessary. Notable is also keyboard friendly, has a quick open window, and we'll soon add a command palette too, so you won't have to click any buttons if you don't want to. -
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Install Elevate
A sport app to "Elevate" your training experience and goals
A sport app to "Elevate" your training experience and goals! Track your fitness and progressions over time. Analyze deeper your activities. And more. Download for Chrome, Chromium, Edge (from 2020), Brave, Opera, Vivaldi, Yandex. Contains the Elevate App shared and loaded by both desktop and web extension projects. Appcore contains core features like fitness trends, year progressions, athlete settings. Holds the container behaviour to provide a cross-platform desktop app under Windows, Linux & MacOS. It contains desktop-specific features like connectors synchronization (to fetch athlete activities from external). Contains the web extension behavior that acts directly on strava website. This includes extended stats on activities & segment efforts, best splits, etc. The new mono-repo including the desktop app and the web extension is on develop-new branch at the moment. -
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Cerebro
Open-source productivity booster with a brain
Cerebro is an open source electron-based productivity software that lets you search and see everything you need on your PC in one place. With just a few clicks you can search on your machine or on the internet everything you need; see everything you need without having to open another application; and easily find and use what you want. -
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Lorien
Infinite canvas drawing/whiteboarding app
Lorien is a fast, lightweight infinite-canvas drawing and note-taking application designed for brainstorming, sketching, and freeform diagramming without the bloat of traditional bitmap editors. Instead of storing raster image data, Lorien saves each brush stroke as vector-like points and reconstructs drawings at runtime, resulting in extremely small save files and smooth performance even on large canvases. The app runs on Windows, macOS, and Linux, and it’s built using the Godot game engine, which gives it a responsive and modern user interface across platforms. Users get features like infinite zoom, undo/redo, and a grid that stretches endlessly, making it well suited to both quick scribbles and detailed conceptual layouts. Lorien supports pressure-sensitive tablets for natural drawing, and it includes a range of basic tools — from freehand brush and eraser to shapes and selection tools — so you can mix freeform sketches with structured diagrams. -
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Stretchly
The break time reminder app
Stretchly is a cross-platform open-source app that reminds you to take breaks when working on your computer. When you run Stretchly for the first time, you are presented with a Welcome window that allows you to change the language, review the preferences, view the online tutorial or simply continue with the default preferences. Stretchly itself lives in your tray, only displaying a reminder window from time to time, which contains an idea for a break. By default, there is a 20 second Mini Break every 10 minutes and a 5 minute Long Break every 30 minutes (after 2 Mini Breaks). You'll be notified 10 seconds before a Mini Break (and 30 seconds before a Long Break) so that you can prepare to pause your work. When a break starts, you can postpone it once for 2 minutes (Mini Breaks) or 5 minutes (Long Breaks). Then, after a specific time interval passes, you can skip the break. Both actions are available by clicking on the link at the bottom of window. -
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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). -
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Super comprehensive deep learning notes
Super Comprehensive Deep Learning Notes
Super comprehensive deep learning notes is a massive and well-structured collection of deep learning notebooks that serve as a comprehensive study resource for anyone wanting to learn or reinforce concepts in computer vision, natural language processing, deep learning architectures, and even large-model agents. The repository contains hundreds of Jupyter notebooks that are richly annotated and organized by topic, progressing from basic Python and PyTorch fundamentals to advanced neural network designs like ResNet, transformers, and object detection algorithms. It’s not just a dry code repository; it includes theoretical explanations alongside hands-on examples, loss function explorations, optimization routines, and full end-to-end experiments on real datasets, making it highly suitable for both self-study and classroom use. -
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Old Win32 Notepad
Old Windows Notepad remake
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EyeRest
A lightweight Windows tray application for the 20–20–20 rule
EyeRest is a simple, open-source desktop utility designed to help users maintain healthy eye habits by reminding them to take regular breaks from screen time based on customizable intervals. The application sits quietly in the system tray and uses gentle pop-up notifications or full-screen break prompts to encourage users to rest their eyes, follow the 20-20-20 rule, or complete other scheduled pauses without disrupting workflow. Users can configure how often reminders appear, how long breaks should last, and define quiet hours when reminders are paused — making it adaptable for both focused work and creative sessions. EyeRest typically includes motivational or instructional content during breaks to reinforce good ergonomics, promoting reduced eye strain, improved focus, and overall wellness for anyone who spends extended periods at a computer. -
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GloboNote
Create sticky notes, to-do list, journals & reminders all in one app
GloboNote is a free and easy to use desktop note taking application. It lets you create sticky notes, to-do lists, journals, reminders and other notes in one place. There are no limits to the number of sticky notes you can create. Notes can be organize by groups and search using the search tool. GloboNote can be run in any OS that has Java 8 installed. -
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Notes
Note taking application, write down your thoughts.
Notes is an open source, cross-platform note-taking application. Write down your thoughts with ease, and always have them with you with this simple, streamlined app.
