Open Source Software for Android
Buttercup
Buttercup is a free and open-source password manager, available on all major platforms. With Buttercup you can track and store your login information for any service and device that you use. The application's securely encrypted vault allow you to store account information securely with additional support for 2FA/OTP (TOTP).
Standard Notes
Standard Notes is a safe place for your notes, thoughts, and life's work. With Standard Notes you can create, edit and manage notes with a complete encrypted app that is free and open source.
Blokada
Blokada is a popular, free and open source ad blocker and privacy app for Android and iOS. With Blokada you can efficiently block ads, trackers, malware, save on your data plan, speed up your mobile device. Blokada is actively developed by an amazing open source community where anyone is free to contribute and verify the source code.
Padlock
Padlock is an open source, cross-platform password manager that lets you syncronize passwords across platforms. With Padlock you can store your passwords saftley. Padlock is provided as a manage service for a monthly cost, or can be self-hosted on your own hardware or in the cloud.
Microsoft Edge
A free Chromium-based web browser developed for rebuilt for performance and compatibility by Microsoft. Microsoft Edge features a browser experience that can make you more productive. You can also automatically donate to cause of your choice when you search with Bing through Microsoft Rewards and Microsoft Edge.
Manyverse
Manyverse is a social networking app that provide features like posts, likes, profiles, private messages. However, Manyverse is not like other social networks. It is not owned and operated by a single entity, instead Manyverse is a decentralized social network operated by the people. With no ads, no pay wall, no data centers, and no cookies, tracking or spying.
Twetch
Twetch is a blockchian-based social network. On Twetch, all interactions are micropayments in the form of Bitcoin BSV and the platform truley revolutionize social media interactions with its micropayments business model that does not include third-party actors taking shares off the payments. All of your content on Twetch is signed by you and stored on the blockchain, forever accessible to you.
Firefox
Firefox is a free and open source web browser developed by Mozilla Foundation and the community. Roughly 250 million people use Firefox to browse the web daily. The browser is loved by many and in the open-source world it's seen as the defacto web browser. Firefox is highly extensible, and provides an ecosystem for thousands of third-party add-ons, that can be used to extend the capability of the software. According to tests the Firefox outperform similar web browsers like Google Chrome and Safari. The Firefox project also takes deep pride in preserving user privacy in a world where more and more personal data is collected.
Opera
A free web browser for Android, iOS, macOS, Linux and Windows developed by the Norwegian company Opera Software. Opera is Chromium-based browser with a unique user interface that uses the Blink layout engine. With Opera users can browse in privacy with Opera's built-in VPN. Stay in touch with each other through the built-in messenger and browse in style with with dark and light themes, keyboard shortcuts, and favorite bookmarks.
Okuna
An ethical social network for a brighter tomorrow. Okuna launched on the scene in 2018 with a Kickstarter campaign under the name Openbook, where they succeeded to raise over $50,000. The goal of the project is to build a free and open source social media platform that respects user privacy. Okuna is still in closed beta and provides registration via invites only.