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A curated list of open-source & free software alternatives.
📚Office
Open source software for office.
OnlyOffice
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ONLYOFFICE Desktop Editors is a free, open-source office suite that uses OOXML (DOCX, XLSX, PPTX) as its native file format, offering exceptionally high compatibility with Microsoft Office documents. It features a moder…
Create and edit web-based documents, spreadsheets, and presentations. Store documents online and access them from any computer.
LibreOffice is the most popular, full-featured open-source office productivity suite. It includes Writer (word processing), Calc (spreadsheets), Impress (presentations), Draw (vector graphics and flowcharts), Base (data…
Euro-Office
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A European open-source office suite built on ONLYOFFICE technology, offering browser-based document, spreadsheet, presentation, and PDF editors with OOXML and ODF support .
Etherpad is an open-source, highly customizable online real-time collaborative text editor. It enables multiple users to co-author document drafts, meeting notes, and brainstorming outlines simultaneously, featuring col…
Collaborative Office Suite
CryptPad is an open-source, end-to-end encrypted real-time collaborative office suite. It allows users to create rich text documents, spreadsheets, presentations, kanban boards, and whiteboards directly in the browser. …
WordCraft
A clean-room reimplementation of Word written in Rust, targeting DOCX compatibility with a Word-style ribbon, styles, track changes, and mail merge; roughly 62% feature parity at v0.3 .
Collabora Online
Collabora Online is an enterprise-grade, open-source server component based on LibreOffice engine technology. When integrated with self-hosted cloud platforms like Nextcloud or ownCloud, it brings full-featured collabor…
Why Apache OpenOffice
Apache OpenOffice is a leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more. It is available in many languages and works on al…
Calligra Suite is an office and graphic art suite by KDE. It contains applications for word processing, spreadsheets, presentation, vector graphics, and editing databases.
🍎Operating System
Recommended list of commonly used operating systems.
Linux Mint is a free, open-source operating system that's based on Ubuntu. It was first released back in 2006 and has become a go-to choice for people switching from Windows, because it just feels familiar. The desktop …
Debian is one of the oldest and most respected Linux distributions out there. It started back in 1993, and it's known for being incredibly stable, completely free, and run entirely by a community of volunteers.
The t…
Ubuntu
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Ubuntu is a free, open-source operating system based on Linux. It was first released in 2004 by Canonical and has since become one of the most widely used Linux distributions worldwide. Ubuntu is known for its ease of u…
Fedora is a free, open-source Linux distribution developed by the Fedora Project and sponsored by Red Hat. First released in 2003, it is known for shipping the latest versions of software and technologies, making it a p…
Kubuntu
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Kubuntu is a free, open-source operating system based on Ubuntu, but it uses the KDE Plasma desktop environment instead of GNOME. Released in 2005, it offers a familiar, Windows-like layout that makes it easy for newcom…
Manjaro is a Linux distribution that's based on Arch Linux, but it's designed to be much friendlier for everyday users. It started back in 2011 and has become one of the most popular Arch-based systems out there.
The…
Deepin
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Deepin is a Linux distribution made by a Chinese company called Deepin Technology, based in Wuhan. It started back in 2004 as Hiweed Linux, and over the years it has grown into one of the most popular Linux systems from…
Rocky Linux
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Rocky Linux is a Linux distribution that was created to fill the gap left behind when CentOS changed direction. It was founded in late 2020 by Gregory Kurtzer, who was one of the original founders of CentOS, and it's na…
NixOS
NixOS is a Linux system that does things a bit differently from most others. It started back in 2003 as a research project, and it's still going strong today.
Here's the basic idea: instead of installing stuff one by…
AlmaLinux
AlmaLinux is a Linux distribution that, like Rocky Linux, was created to fill the void left by CentOS. It was announced in December 2020 by CloudLinux, a company that had been building its own commercial Linux product f…
🌐Browsers
Recommended Secure and Fast Browser
Firefox is a free, open-source web browser developed by Mozilla, a non-profit organization. It was first released in 2002 under the name Phoenix, and has since become one of the most trusted browsers on the web.
What…
Brave is a free, open-source web browser that puts privacy first. It was created in 2015 by Brendan Eich, who also co-founded Mozilla Firefox. Brave is built on Chromium, so it works with most Chrome extensions and feel…
Opera is a free web browser known for packing in features that other browsers make you hunt for. It's built on Chromium, so websites and extensions work smoothly, but Opera adds its own layer of tools on top.
The sta…
vivaldi
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Vivaldi is a free web browser created in 2016 by a team led by Jon von Tetzchner, who also co-founded Opera. It's built on Chromium, so it works with Chrome extensions, but that's where the similarities end.
What mak…
DuckDuckGo Browser is a privacy-focused web browser available on mobile and desktop. Its main selling point is simple: it blocks trackers and ads automatically, without any setup. Every time you browse, it shows you how…
A hardened Firefox fork that removes all telemetry, includes uBlock Origin by default, and disables cloud sync for maximum privacy .
A Firefox-based browser that routes traffic through the Tor network for anonymity, with multiple security levels and fingerprinting protection .
Zen Browser
A Firefox fork with a modern, minimalist interface featuring vertical tabs, workspaces, and split view, designed for a calmer and more focused browsing experience .
Pale Moon is a free, open-source web browser that branched off from Firefox back in 2009. It takes a very different path from mainstream browsers — instead of chasing the latest trends, it sticks to a more traditional a…
WaterFox
Waterfox is a free, open-source web browser based on Firefox, created in 2011 by Alex Kontos when he was just 16 years old. It started as a simple idea: give people a true 64-bit Firefox build that could take full advan…
📹Video Editor
List of open-source alternatives to video editors.
Kdenlive is a free, open-source video editor that strikes a balance between power and usability. It's available on Windows, macOS, and Linux, and it's built on the MLT framework, which gives it broad format support and …
OpenShot
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OpenShot is a free, open-source video editor designed for beginners and casual creators. It's available on Windows, macOS, and Linux, and its interface is clean and straightforward — you can drag and drop clips onto the…
Shotcut
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Shotcut is a free, open-source video editor available on Windows, macOS, and Linux. It's built on the MLT multimedia framework, which gives it impressive format support — you can edit video files in virtually any format…
LosslessCut
LosslessCut is an ultra-fast, open-source utility for trimming and cutting video/audio files without re-encoding or quality loss. It operates purely on stream copies for instant, lossless file exports.
Cinelerra GG Infinity
Cinelerra GG Infinity is a high-performance open-source non-linear video editing system for Linux designed for professional media production, motion tracking, multi-camera editing, and 8K video processing.
Olive Video Editor
Olive is an open-source non-linear video editor aiming to provide a modern alternative to high-end video editing software, featuring node-based compositing, non-destructive color management, and smooth timeline performa…
Flowblade
Flowblade is a multitrack non-linear video editor for Linux designed to provide a fast, precise, and film-style editing workflow with advanced trimming tools, filters, and G'MIC image processing integration.
Pitivi
Pitivi is an open-source video editor integrated with the GNOME desktop environment. Built on top of the GStreamer Editing Services framework, it offers a clean, intuitive interface with timeline audio/video manipulatio…
📄File Sharing
List of Open-Source or Free File Transfer Software
LocalSend is a cross-platform, open-source application designed for secure, peer-to-peer file and text sharing over a local network. Requiring no internet connection, external cloud servers, or account registration, it …
Nextcloud
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Lets you run your own private cloud for file storage, syncing, and team collaboration — your data, your server, no third-party lock-in.
Seafile
Seafile is an open-source, high-performance file sync and sharing platform designed for reliability and speed. It features block-level file deduplication, drive mounting (virtual drive), client-side encryption, and file…
FileGator
FileGator is an open-source, self-hosted web file manager and sharing portal. It allows users to upload, manage, edit, and share files via public links with multi-user permissions and cloud storage backends (S3, Dropbox…
ownCloud
ownCloud Infinite Scale is an open-source enterprise file sync and sharing solution built on Go and microservices architecture. It provides high-performance file access, encrypted file transfer, federated cloud sharing,…
🎥Screen Capture & Recording
List of Open-Source Screen Capture or Recording Software
ShareX is an extremely versatile open-source screen capture, file sharing, and productivity tool for Windows. It supports fullscreen, active window, region, and scrolling screen captures, along with GIF and MP4 video re…
Greenshot is a lightweight open-source screenshot software tool for Windows. Optimized for speed and productivity, it allows users to capture selected regions, full screens, or scrolling web pages. Its built-in editor o…
🎶Media Player
Media Player, Video & Audio
VLC is a world-renowned, open-source cross-platform multimedia player capable of playing virtually any audio or video codec (such as MP4, MKV, AVI, FLAC, H.264, and HEVC) without requiring additional codec packs. It off…
📖Knowledge & Notes
Knowledge & Notes opensource software list
A Markdown-based note-taking and to-do app with end-to-end encryption and flexible sync options — a solid Evernote or OneNote stand-in.
Logseq
Logseq is a privacy-first, open-source knowledge management tool focused on personal outlining and daily journaling. Operating on a local-first architecture, all notes are stored as plain Markdown or Org-mode files dire…
AppFlowy
AppFlowy is an open-source, local-first workspace tool designed as a privacy-focused alternative to Notion. It allows users to build databases, kanban boards, task lists, and rich-text documents with full offline suppor…
Obsidian is a powerful, extensible knowledge base and note-taking application that operates on local folders of plain text Markdown files. While the core application is proprietary-free for personal use, its entire plug…
💼File Archiver
File Archiver, Compression and decompression.
7-Zip is a high-compression ratio open-source file archiver for Windows. Featuring its proprietary 7z archive format with LZMA compression, it also fully supports compressing and unpacking ZIP, TAR, GZ, and RAR archives…
🌼Image Editor
Image Editor & Digital Painting
GIMP
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GIMP (GNU Image Manipulation Program) is a feature-rich, open-source raster graphics editor. It provides sophisticated tools for photo retouching, image composition, graphic design, and format conversion. Supporting adv…
Krita is a professional-grade open-source raster graphics editor tailored for concept artists, illustrators, texture creators, and comic artists. It features an advanced brush engine with dynamic stabilizer tools, seaml…
🔒Password Manager
Password Manager
Bitwarden is an open-source password management platform that securely stores encrypted login credentials, credit card details, secure notes, and identities across desktop, mobile, and web browser extensions. Using end-…
KeePassXC is a community-driven, cross-platform password manager that stores all passwords in an offline, heavily encrypted local database (.kdbx). It includes features like password generation, custom attribute storage…
🧹System Cleaner
System Cleaner
BleachBit
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BleachBit is an open-source system cleanup and privacy maintenance utility available for Windows and Linux. It scans and deletes temporary cache files, cookies, log files, junk traces, and browser history to free up dis…
📘PDF Management
PDF Management tools
PDFsam (PDF Split and Merge) is a free, open-source desktop tool designed for effortless manipulation of PDF files. It allows users to merge, split, extract pages, rotate, and mix PDF documents quickly on Windows, macOS…
📤Video & Audio Transcoder
Video & Audio Transcoder tools
Audacity is an easy-to-use, multi-track audio editor and recorder for Windows, macOS, and Linux. It supports recording live audio, converting tapes and records into digital files, cutting and mixing tracks, and applying…
HandBrake is an open-source video transcoder available for Windows, macOS, and Linux. It can convert video files from almost any format to widely supported modern codecs (such as MP4, MKV, WebM, H.264, H.265, and AV1). …
🏗3D CAD Modeling
3D CAD Modeling tools
FreeCAD is a parametric 3D computer-aided design (CAD) modeler built for product design, mechanical engineering, and architecture. It features a modular architecture with specialized workbenches for 2D drafting, 3D soli…
⬇️Download Manager
Download Manager
qBittorrent is an advanced, lightweight open-source BitTorrent client designed as a clean, feature-rich alternative to uTorrent. It features an integrated search engine, sequential downloading, IP filtering, bandwidth s…
Transmission is a fast, lightweight, and ad-free BitTorrent client. Known for its clean, non-intrusive user interface and extremely low RAM and CPU usage, it includes advanced features like bandwidth scheduling, remote …
📁FTP & SFTP Client
FTP & SFTP Client
FileZilla
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FileZilla is a popular open-source FTP, FTPS, and SFTP client designed for fast and reliable file transfers between local machines and remote web servers. It features a dual-pane interface, site manager with encrypted c…
↔️Continuous File Synchronization
Continuous File Synchronization
Syncthing
Syncthing is a continuous file synchronization program that securely syncs files between two or more devices across a local network or over the internet. Utilizing cryptographic certificates for mutual authentication an…
📧Email Client
Email Client
A free, open-source desktop email app that handles multiple accounts, calendars, and contacts in one place — the go-to replacement for desktop Outlook.
🐞Bug Tracker
Bug Tracker
Bugzilla
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A battle-tested bug tracker originally built at Mozilla, known for holding up under heavy load on large projects.
MantisBT
A straightforward web-based issue tracker for logging bugs and tracking defects across a development team.
🤖AI Chat Interface
AI Chat Interface
An MIT-licensed chat interface that brings OpenAI, Anthropic, Google, and local models under one roof, with model comparison and presets built in.
Open WebUI
Featured
A self-hosted front end for local or API-based LLMs, with retrieval-augmented generation, team workspaces, and tooling well beyond a basic chat box.