Free websites where you can publish your mobile application

Here are some brief descriptions of the websites I listed earlier along with their links:

1. Google Play Store - One of the largest app stores, available for Android devices. You can publish your app on this platform to reach millions of users. You'll need a Google Developer account to publish your app. https://play.google.com/apps/publish/
2. Apple App Store - One of the largest app stores, available for iOS devices. You can publish your app on this platform to reach millions of users. You'll need an Apple Developer account to publish your app. https://developer.apple.com/app-store/
3. Amazon Appstore - Amazon's app store, available for Android devices. You can publish your app on this platform to reach Amazon customers. You'll need an Amazon Developer account to publish your app. https://developer.amazon.com/apps-and-games/
4. Microsoft Store - Microsoft's app store, available for Windows devices. You can publish your app on this platform to reach Windows users. You'll need a Microsoft Developer account to publish your app. https://partner.microsoft.com/en-US/dashboard/products/
5. F-Droid - An alternative app store for Android devices that focuses on free and open-source software. You can publish your open-source app on this platform. https://f-droid.org/en/docs/Submitting_to_F-Droid/
6. SlideME - An alternative app store for Android devices that aims to provide a curated selection of high-quality apps. You can publish your app on this platform for free. https://slideme.org/developers
7. Aptoide - Another alternative app store for Android devices, known for its user-friendly interface and wide range of apps. You can publish your app on this platform for free. https://en.aptoide.com/developers
8. GetJar - An independent app store that provides a platform for developers to showcase their apps. You can publish your app on this platform for free. https://www.getjar.com/developers/
9. AppBrain - A platform that provides a range of app promotion services for Android apps, including app discovery and advertising. You can publish your app on this platform for free. https://www.appbrain.com/info/developers
10. Opera Mobile Store - Another alternative app store for Android devices, with a focus on delivering a fast and smooth user experience. You can publish your app on this platform for free. https://publishers.apps.opera.com/
11. Blackberry World - BlackBerry's app store, available for BlackBerry devices. You can publish your app on this platform to reach BlackBerry users. You'll need a BlackBerry Developer account to publish your app. https://appworld.blackberry.com/isvportal/
12. Appszoom - An independent app store that provides a platform for developers to showcase their apps. You can publish your app on this platform for free. https://www.appszoom.com/developers/
13. 1Mobile Market - An alternative app store for Android devices, with a focus on providing a user-friendly interface and a broad range of apps. You can publish your app on this platform for free. https://www.1mobile.com/developer.html
14. Mobango - An independent app store that provides a platform for developers to showcase their apps. You can publish your app on this platform for free. https://developer.mobango.com/
15. Soc.io Mall - An alternative app store for Android devices, with a focus on social networking and communication apps. You can publish your app on this platform for free. https://soc.io/mall/

Please note that some of these platforms may have specific guidelines and requirements, and the app approval process may take longer than others. Make sure to read the guidelines carefully and follow them to increase your chances of getting your app published.