Java Privacy

Open-source Java projects categorized as Privacy
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Top 23 Java Privacy Projects

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  1. Cryptomator

    Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.

    Project mention: Cryptomator | news.ycombinator.com | 2026-08-20

  2. AppSignal

    Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.

    AppSignal logo

  3. FairEmail

    Fully featured, open source, privacy friendly email app for Android

    Project mention: Gmail Thinks I'm Stupid, So I Left | news.ycombinator.com | 2026-06-02

    Over the years I've recommended Migadu and still do. Affordable and reliable with usage based pricing.

    As for the email client I personally prefer Thunderbird on the PC and FairEmail on Android.

    https://migadu.com/

    https://email.faircode.eu/

  4. Yacy

    Distributed Peer-to-Peer Web Search Engine and Intranet Search Appliance

    Project mention: Google no longer provides direct URLs in search results | news.ycombinator.com | 2026-09-11

    It's still kind of an open problem. There are partial solutions, but not yet really an integrated one. There is Hister: https://hister.org/ that builds some sort of drive-by index of what you're browsing anyway. And there are "true p2p" solutions like YaCy: https://yacy.net/ but it takes ages to crawl the open web (and lots of storage). There's still a lot of optimization to do in this space.

  5. Shelter

    A Free and Open-Source (FOSS) app that leverages the "Work Profile" feature of Android to provide an isolated space that you can install or clone apps into.

    Project mention: MuMu Player (NetEase) silently runs 17 reconnaissance commands every 30 minutes | news.ycombinator.com | 2026-02-19

    It seems that the repository has moved to https://gitea.angry.im/PeterCxy/Shelter/.

  6. OpenBoard

    100% foss keyboard based on AOSP, with no dependency on Google binaries, that respects your privacy.

  7. tracker-control-android

    TrackerControl Android: monitor and control trackers and ads.

    Project mention: TrackerControl for Android | news.ycombinator.com | 2026-09-01

  8. Peergos

    A p2p, secure file storage, social network and application protocol

    Project mention: Google Broke reCAPTCHA for De-Googled Android Users | news.ycombinator.com | 2026-05-09

  9. SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    SaaSHub logo

  10. personalDNSfilter

    personalDNSfilter is a DNS filter proxy written in Java.

  11. KryptEY

    Android keyboard for secure E2EE communication through the signal protocol in any messenger. Communicate securely and independent, regardless of the legal situation or whether messengers use E2EE

  12. nextdnsmanager

    Manage your NextDNS settings easily with this Android app!

  13. ObscuraCam

    Photo and Video Filtering App for Privacy

  14. i2pd-android

    i2pd for Android

  15. react-native-screenguard

    A React Native library for preventing your app from screenshots and screen recordings, with powerful event detection capabilities.

  16. browser

    A privacy oriented web browser with Greasemonkey style script support and Cookie Banner Blocker (by woheller69)

  17. gngr

    a cross-platform browser focussed on privacy.

  18. APhotoManager

    Manage local photos on Android: gallery, geotag with photomap, privacy, tags, find, sort, view, copy, send, ... .

  19. Xeres

    A Friend-to-Friend, decentralized and secure application for communication and sharing

  20. HideDroid

    HideDroid is an Android app that allows the per-app anonymization of collected personal data according to a privacy level chosen by the user.

  21. DNAnalyzer

    Precision genomics for everyone, everywhere. Powered by private AI.

  22. Notepack

    Privacy oriented, without vendor lock in note organizer, todo list desktop application.

  23. Piped-Backend

    The core component behind Piped, and other alternative frontends!

  24. CaptivePortalController

    Control the captive portal in your Android device, stop phoning home.

  25. app

    Access Freenet from the palm of your hand (by freenet-mobile)

  26. SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    SaaSHub logo
NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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Index

What are some of the best open-source Privacy projects in Java? This list will help you:

# Project Stars
1 Cryptomator 16,284
2 FairEmail 4,704
3 Yacy 4,062
4 Shelter 3,654
5 OpenBoard 2,736
6 tracker-control-android 2,678
7 Peergos 2,531
8 personalDNSfilter 948
9 KryptEY 872
10 nextdnsmanager 689
11 ObscuraCam 349
12 i2pd-android 342
13 react-native-screenguard 314
14 browser 305
15 gngr 296
16 APhotoManager 242
17 Xeres 221
18 HideDroid 217
19 DNAnalyzer 185
20 Notepack 184
21 Piped-Backend 170
22 CaptivePortalController 166
23 app 163

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