Best Free Operating Systems

Ranked by community votes · Free only

All Free Freemium Paid Open Source

Manjaro

This page provides an overview of Manjaro Linux, an open source operating system designed for ease o…

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LogStitch

Stop scrolling CloudWatch

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Debian

Free and open-source operating system

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Fedora

Free and open-source operating system for desktops and servers

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WinStars

Free planetarium software for Windows, Android, and Linux

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CANalyzer

CANalyzer is an analysis software tool from Vector Informatik GmbH

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F-Droid

Free and open-source Android app repository

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OpenSUSE

Free and open-source Linux operating systems for desktops, servers, and containers

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PPSSPP

Play PSP games on Android, iOS, Windows, and more with enhanced graphics

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Sailfish OS

Linux-based mobile operating system with advanced security and user experience

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Tomato Timer

Web-based Pomodoro Technique app with customizable timer and to-do list

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SAMCEF

SAMCEF is a finite element analysis (FEA) software package dedicated to mechanical virtual prototyping.

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Farha

Collect your heart's desires, share them with loved ones, and turn every gift into a meaningful memory

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Qlane — QA for the AI era

An AI QA engineer that drives your app in a real browser on every pull request and posts evidence-backed bug reports

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OneShots

Create App Store screenshots with OneShots

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The Virtual OS Museum

Over 1,700 pre-installed operating systems spanning 1948 to today, in a single Linux VM

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Software Mansion

Free & Open Source Modern URL Shortener

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SuperCmd | macOS Launcher

AI prompt, unlimited clipboard, snippets, notes, canvases, voice typing, text-to-speech, and thousands of extensions for macOS

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Google Research

Discover Google Research

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WorkProcedures

Generate professional standard operating procedures in minutes

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Cosmik

Track the ISS, Starlink and 20,000+ satellites live in 3D, follow every rocket launch, and get free alerts when to look up

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OptionLedger

Automatically import, organize, and analyze your tastytrade options trades

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CollegeAidCalc

Estimate your Student Aid Index, net price, and expected financial aid in minutes

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Compendium

The complete MTG companion

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GitSetGo

30 levels of real git, mentored by Mr

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SIMT | Plan, Track & Measure Offline

SIMT is a free, offline-first spatial toolkit for Android and Wear OS: plan targets, track beyond GPS, measure with AR, use survey-grade GNSS, share locally, and explore the sky in private

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FamWake Family Alarm Clock

No queues for the bathroom, no stress – FamWake coordinates your morning

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Lift5x5

Track your StrongLifts 5x5 workouts with automatic weight progression, deloads, rest timer, and plate calculator

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Lucidly

You know what you mean

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Airway Trainer

Airway Trainer is a snoring exercise app rated 4

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Family Radar

Family location tracking app with real-time maps, smart places, and activity timelines

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Show Me the Counts

Break songs into moments

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Bygmind

Der private AI Recorder für iOS & Android: Aufnehmen, Transkription in 25 Sprachen und Sprechererkennung komplett auf deinem Gerät

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Media Caption | Free YouTube Transcripts

Media Caption — free transcripts for YouTube videos

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Miam Certificate Quest

Get your MIAM certificate fast

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Enomads

Compare 125 digital nomad visas, 80 nomad cities with real cost & wifi data, and 1,362 verified workspaces

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SneakersBook

The free sneaker collection tracker: scan any pair to add it in seconds, see estimated market values, set price alerts, and never miss a drop

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LanChGo

LanChGo is a fast, secure LAN chat app for Windows and Android

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MAIG

The AI backend for iOS and Android

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Norwegian 4x4 Protocol App

Official Norwegian 4x4 Protocol app for iOS & Android

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Not a Clock | Stay Zen, Stay Focused

The ultimate minimalist clock for your digital workspace and Android home screen

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WonderWay

Personalized, ad-free bedtime stories where your child is the hero — plus a learning dashboard that shows exactly what they're learning

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Universal Undo

Stop retyping lost replies, drafts, notes, and forms

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BetaDrop

Give any iOS or Android build an instant OTA install link

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MoneyMinder

Free expense tracker for iOS & Android

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playQurio

Host engaging live quizzes with power-ups, real-time leaderboards, and multiple question types

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VoiceFlow - Speech-to-Text for Windows

Hold Ctrl+Space and write 5x faster

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Mimic

9,000+ trades tracked

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CarpMarks

CarpMarks is the carp fishing app for serious anglers

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Shera Quick File Transfer

Shera: The universal AirDrop alternative for Android, Windows, Mac, and iOS