Open-source privacy software
526 open-source libraries, tools and applications tagged privacy, ranked by how closely privacy is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
526 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| uBlock Origin uBlock Origin is a free, open‑source browser extension that blocks ads, trackers, and malicious scripts. It works on Chromium‑based browser… | 94 | 68563 | active |
| uBlock Origin uBlock Origin is an efficient, wide-spectrum content blocker browser extension for Chromium-based browsers and Firefox. It blocks ads, trac… | 94 | 68563 | active |
| V2Ray V2Ray (Project V) is a network proxy platform written in Go for building proxies to bypass network restrictions and censorship. It supports… | 64 | 46932 | active |
| AdguardTeam/AdGuardHome AdGuard Home is a free, open‑source DNS server that blocks ads, trackers, and malicious domains across an entire network. It supports moder… | 96 | 37244 | active |
| V2Ray V2Ray (Project V) is a Go-based network proxy platform for building tunnels that bypass network restrictions and protect privacy. It suppor… | 95 | 34662 | active |
| XX-net/XX-Net XX-Net is an open-source proxy tool designed to bypass the Great Firewall (GFW) of China by disguising traffic as ordinary web traffic. It … | 86 | 33450 | active |
| ungoogled-chromium A set of patches, scripts, and configuration that builds Google Chromium without dependency on Google web services or prebuilt binaries. It… | 94 | 27851 | active |
| zama-ai/fhevm FHEVM is a full-stack framework from Zama that enables confidential smart contracts on EVM-compatible blockchains using Fully Homomorphic E… | 82 | 24800 | active |
| guillaumemeyer/watermarks-remover watermarks-remover is a Python‑based service and agent skill that strips AI provenance watermarks from text and a wide range of file format… | 78 | 24211 | active |
| lissy93/personal-security-checklist Personal Security Checklist is an open‑source, web‑based guide that compiles 300+ actionable tips for protecting digital security and priva… | 77 | 22581 | active |
| FreeTube FreeTube is an open-source desktop YouTube client built with privacy in mind, letting users watch videos without ads or Google tracking. Al… | 86 | 22073 | active |
| Atlas AtlasOS is an open-source, lightweight modification for Windows that applies privacy, security, and performance optimizations. It removes t… | 81 | 21852 | active |
| Atlas AtlasOS is an open-source modification to Windows that applies privacy, usability, and performance optimizations via an AME Wizard playbook… | 81 | 21852 | active |
| Sandboxie Sandboxie Plus and Classic are open-source sandbox-based isolation applications for Windows that run programs in isolated environments with… | 100 | 19712 | active |
| amnezia-vpn/amnezia-client Amnezia VPN is an open-source, cross-platform VPN client (desktop and mobile) that can automatically deploy a self-hosted VPN server on you… | 93 | 15351 | active |
| xcanwin/KeepChatGPT KeepChatGPT is a userscript/browser plugin that enhances ChatGPT's data security and usability. It keeps sessions alive, blocks tracking, d… | 69 | 14898 | active |
| Vendicated/Vencord Vencord is a Discord client modification written in TypeScript that ships with a large set of preinstalled plugins and theme support. It in… | 66 | 14171 | active |
| Portmaster Portmaster is a free and open-source application firewall and privacy suite for Windows and Linux desktops. It intercepts all network traff… | 95 | 13824 | active |
| 墨鱼去广告 (Cuttlefish AdBlock) A curated collection of ad-blocking rules, rewrite scripts, and ready-made configuration files for proxy tools like QuantumultX, Surge, Sha… | 65 | 13709 | active |
| mozilla-firefox/firefox Firefox is Mozilla's free and open-source web browser built on the Gecko engine, available for desktop and mobile platforms. It emphasizes … | 69 | 13515 | active |
| memstechtips/Winhance Winhance is a C#/WinUI3 desktop application for debloating, optimizing, and customizing Windows 10 and 11 systems. It provides a GUI for re… | 82 | 13335 | active |
| objective-see/LuLu LuLu is a free, open-source macOS firewall that monitors and blocks unknown outgoing network connections. It uses a system extension and ne… | 91 | 13221 | active |
| zoicware/RemoveWindowsAI A PowerShell script that forcibly removes or disables all AI features in Windows 11, including Copilot, Recall, and AI components in built-… | 69 | 13206 | active |
| mozilla-mobile/firefox-ios The official Mozilla monorepo containing Firefox for iOS and Firefox Focus for iOS, full-featured open-source web browsers built in Swift. … | 93 | 13050 | active |
| LibreTube LibreTube is a free, open-source Android app that serves as a privacy-focused alternative frontend for YouTube, using Piped proxies to avoi… | 97 | 12850 | active |
| Presidio Presidio is an open-source Python SDK for detecting, redacting, masking, and anonymizing sensitive data (PII) in text, images, and structur… | 91 | 11271 | active |
| yokoffing/Betterfox Betterfox is a curated user.js preference file that hardens Mozilla Firefox for privacy, security, and speed via about:config tweaks. It bu… | 90 | 10895 | active |
| Monero Monero is the reference implementation of the Monero (XMR) privacy-focused cryptocurrency, including the full node daemon (monerod), wallet… | 88 | 10865 | active |
| TechnitiumSoftware/DnsServer Technitium DNS Server is an open-source, cross-platform authoritative and recursive DNS server built on .NET, designed for self-hosting wit… | 97 | 10032 | stable |
| AdAway AdAway is a free and open source ad blocker for Android that blocks ads system-wide using the hosts file or a local VPN. It supports both r… | 65 | 9474 | active |
| ermaozi/get_subscribe A Python project that automatically aggregates and republishes free proxy subscription links (Clash, V2Ray, Trojan, SSR/SR formats) that re… | 77 | 9370 | active |
| Universal-Debloater-Alliance/universal-android-debloater-next-generation A cross-platform desktop GUI application written in Rust that uses ADB to remove bloatware from non-rooted Android devices. It aims to impr… | 71 | 9307 | active |
| minbrowser/min Min is a fast, minimal open-source web browser built in JavaScript (Electron) that emphasizes privacy and focus. It blocks ads and trackers… | 89 | 9180 | active |
| florisboard/florisboard FlorisBoard is a free and open-source keyboard app for Android 8.0+ built in Kotlin, focused on being modern, customizable, and privacy-res… | 78 | 8704 | active |
| Floorp Browser Floorp is a free, open-source web browser built on Mozilla Firefox (Gecko) that adds advanced customization features like workspaces, split… | 95 | 8449 | active |
| Vesktop Vesktop is a custom open-source Discord desktop client with Vencord preinstalled, offering better performance, built-in telemetry blocking,… | 89 | 8447 | active |
| chengaopan/AutoMergePublicNodes An automated aggregator that scrapes and merges publicly available proxy nodes (SS/SSR/V2Ray/Trojan/Clash) from the internet and republishe… | 72 | 8243 | active |
| mullvad/mullvadvpn-app The official Mullvad VPN client app for desktop and mobile, including a Rust system service/daemon, an Electron-based GUI, a CLI, and dedic… | 99 | 7692 | active |
| netblue30/firejail Firejail is a SUID security sandbox program for Linux that uses kernel namespaces, seccomp-bpf filters, and Linux capabilities to run appli… | 79 | 7688 | active |
| jonasstrehle/supercookie A demonstration web application that assigns persistent unique identifiers to website visitors via favicon-based browser fingerprinting. It… | 10 | 7383 | active |
| greatfire/wiki A GreatFire wiki/repository page that serves as the distribution hub for FreeBrowser (自由浏览), an Android app for circumventing internet cens… | 56 | 7293 | active |
| BleachBit BleachBit is an open-source system cleaner for Windows and Linux that frees disk space and protects privacy by deleting caches, cookies, lo… | 94 | 7189 | stable |
| OnionShare OnionShare is an open-source desktop and mobile application that lets users securely and anonymously share files, host websites, and chat o… | 84 | 7156 | active |
| HMBSbige/ShadowsocksR-Windows A Windows GUI client for the ShadowsocksR proxy protocol, built with WPF on .NET 6. It is a maintained fork of the original ShadowsocksR cl… | 10 | 6924 | active |
| Shadowsocks ShadowsocksX-NG is a macOS GUI client for the Shadowsocks proxy protocol, rewritten in Swift with ss-local running as a background Launch A… | 23 | 32878 | maintenance |
| aistra0528/Hail Hail is a free, open-source Android app for freezing, disabling, hiding, or suspending other apps without root, using Shizuku or root privi… | 85 | 6832 | active |
| BrowserWorks/waterfox Waterfox is a free, open-source web browser built on the Mozilla Firefox/Gecko platform with telemetry and data collection disabled at buil… | 98 | 6352 | active |
| HeliBorg/HeliBoard HeliBoard is a privacy-conscious, customizable open-source keyboard for Android, based on AOSP/OpenBoard. It works fully offline with no in… | 95 | 6346 | active |
| builtbybel/FluentCleaner FluentCleaner is a modern Windows desktop cleaner built with WinUI 3, inspired by the classic CCleaner, focused on removing junk files with… | 79 | 6326 | active |
| hanydd/BilibiliSponsorBlock A browser extension that automatically skips sponsored segments, intros/outros, and like-subscribe reminders in Bilibili videos, ported fro… | 94 | 6243 | active |
| undergroundwires/privacy.sexy privacy.sexy is an open-source desktop application that enforces privacy and security best practices on Windows, macOS, and Linux. It provi… | 56 | 6075 | active |
| garinasset/leak-check A self-hostable personal information leak detection service that checks whether your personal data (name, phone, email, address, QQ, etc.) … | 46 | 5921 | active |
| rcmaehl/MSEdgeRedirect A Windows utility that intercepts Microsoft Edge process command line arguments and redirects News, Search, Widgets, Weather, and other lin… | 59 | 5893 | active |
| Dr-TSNG/Hide-My-Applist An Xposed module for rooted Android devices that hides installed apps from other apps' package list queries. It intercepts app list detecti… | 82 | 5597 | active |
| Rethink DNS + Firewall Rethink DNS + Firewall is an open-source Android app combining an encrypted DNS client (DoH, Oblivious DoH, DoT, DNSCrypt) with blocklists,… | 97 | 5554 | active |
| Tribler/tribler Tribler is a privacy-enhanced BitTorrent client with built-in decentralized search and content discovery, using a custom Tor-like onion rou… | 88 | 5319 | active |
| bpc-clone/bpc_chrome_support Support repository for Bypass Paywalls Clean, a browser extension that bypasses paywalls on news sites. The extension itself has moved to g… | 32 | 5265 | active |
| gommzystudio/device-activity-tracker A proof-of-concept application that tracks device activity of phone numbers on WhatsApp and Signal by measuring round-trip times of silent … | 40 | 5166 | active |
| SpaceTimee/Sheas-Cealer Sheas Cealer is a WPF (.NET 8) Windows desktop tool that forges the SNI extension field in Chromium's launch parameters, allowing users to … | 64 | 5159 | active |
| ClearURLs ClearURLs is a browser extension built on WebExtensions technology that automatically removes tracking parameters (like utm_source) from UR… | 34 | 5062 | active |
| torproject/tor Tor is the core implementation of the Tor anonymity network, routing internet traffic through onion circuits to hide a user's IP address an… | 32 | 5052 | active |
| luestr/ProxyResource A curated resource repository for the Loon proxy app, providing configuration templates, plugins, scripts, and rule sets. It serves as an i… | 68 | 5036 | active |
| addy.io The self-hostable source code for addy.io (formerly AnonAddy), an open-source anonymous email forwarding service. It lets users create emai… | 98 | 4885 | active |
| duckduckgo/Android The official DuckDuckGo Android app, a privacy-focused mobile browser and search client written in Kotlin. It blocks trackers, enforces enc… | 95 | 4855 | active |
| yiyuanjichang/dizhi A repository serving as the official website/mirror listing for Yiyuan Airport (一元机场), a commercial proxy/VPN subscription service. It prim… | 31 | 4829 | active |
| nisrulz/app-privacy-policy-generator A free, open-source web app that generates customized Privacy Policy and Terms & Conditions documents for Android, iOS, KaiOS, and Web apps… | 91 | 4687 | active |
| AdguardTeam/AdguardBrowserExtension AdGuard Browser Extension is a free, open-source ad blocker for Chrome, Firefox, Opera, Edge, and other Chromium-based browsers. It blocks … | 98 | 4482 | active |
| cavi-au/Consent-O-Matic Consent-O-Matic is an open-source browser extension that automatically fills out cookie consent popups according to your saved preferences.… | 49 | 4268 | active |
| irbis-sh/zen-desktop Zen is an open-source, system-wide ad-blocker and privacy guard for Windows, macOS, and Linux. It runs a local proxy that intercepts HTTP/H… | 97 | 4265 | active |
| OhMyGuus/I-Still-Dont-Care-About-Cookies A debloated, community-maintained fork of the 'I don't care about cookies' browser extension that automatically hides or dismisses cookie c… | 84 | 4264 | active |
| hellzerg/optimizer Optimizer is a Windows GUI configuration utility for enhancing privacy and security, applying system tweaks, disabling telemetry, cleaning … | 10 | 18244 | maintenance |
| nextdns/nextdns NextDNS CLI is an open-source command-line client (written in Go) that connects to NextDNS's DNS-over-HTTPS service, acting as a local DoH … | 90 | 4184 | active |
| zly2006/zhihu-plus-plus Zhihu++ is an open-source third-party Android client for the Chinese Q&A platform Zhihu, built in Kotlin, that removes ads, promotional pos… | 84 | 4184 | active |
| app2smile/rules A collection of ad-blocking rule modules and rewrite scripts for iOS proxy tools like Surge, Loon, and Quantumult X. It removes in-app adve… | 60 | 4138 | active |
| zhom/donutbrowser Donut Browser is an open-source anti-detect desktop browser for macOS, Windows, and Linux that creates unlimited isolated browser profiles,… | 83 | 4088 | active |
| libredirect/browser_extension LibRedirect is a browser extension (WebExtension) that automatically redirects requests to popular sites like YouTube, Twitter, Reddit, Ins… | 87 | 4081 | active |
| M66B/NetGuard NetGuard is a free and open-source no-root firewall application for Android that blocks internet access per app using a local VPN. It allow… | 86 | 3941 | active |
| oasisfeng/island Island is an Android app that leverages the Android device-owner/profile-owner (DPC) APIs to create isolated 'islands' for cloning or freez… | 38 | 3931 | active |
| SecureDrop SecureDrop is an open-source whistleblower submission system that lets media organizations and NGOs securely accept documents from and comm… | 94 | 3887 | stable |
| Privacy Badger Privacy Badger is a free browser extension by EFF that automatically learns to block hidden third-party trackers as you browse. It sends Gl… | 94 | 3865 | active |
| uBlock Origin uBO Lite is an efficient, permission-free content blocker browser extension built on the Manifest V3 API, from the uBlock Origin team. It o… | 93 | 3836 | active |
| Lantern Lantern is a cross-platform internet censorship circumvention tool (proxy/VPN client) that helps users bypass firewalls such as the Great F… | 100 | 16409 | maintenance |
| Serverless DNS Resolver A serverless, Pi-hole-style DNS-over-HTTPS and DNS-over-TLS resolver with configurable blocklists. It deploys to Cloudflare Workers, Deno D… | 58 | 3815 | active |
| Redlib Redlib is a private, privacy-focused front-end for Reddit written in Rust, forked from Libreddit. It proxies all requests (including media)… | 49 | 3787 | active |
| oblador/hush Hush is a free, open-source Safari content blocker for iOS and macOS that blocks cookie consent banners and privacy-invasive tracking scrip… | 62 | 3704 | active |
| lookscanned/lookscanned.io LookScanned.io is a pure frontend web application that transforms PDFs (and other documents) so they look like scanned copies, with adjusta… | 34 | 3601 | active |
| frknkrc44/HMA-OSS HMA-OSS is a Zygisk module that hides your app list, settings, and package installers from other apps on rooted Android devices. It is a Ko… | 84 | 3593 | active |
| osano/cookieconsent A lightweight, free JavaScript plugin that displays cookie consent banners to help websites comply with the EU Cookie Law, GDPR, and CCPA. … | 63 | 3576 | stable |
| ukanth/afwall AFWall+ is an open-source firewall application for rooted Android devices built on Linux iptables. It provides per-app granular control ove… | 91 | 3487 | active |
| google/differential-privacy Google's collection of differential privacy libraries for computing ε- and (ε, δ)-differentially private statistics over datasets. It inclu… | 75 | 3369 | active |
| Telegram-FOSS-Team/Telegram-FOSS An unofficial, FOSS-friendly fork of the official Telegram client for Android that removes proprietary binaries and replaces them with free… | 23 | 3309 | active |
| deltazefiro/Amarok-Hider Amarok is a lightweight Android privacy app that hides private files and apps with a single click by obfuscating file signatures or permiss… | 72 | 3284 | active |
| Blokada Blokada is an open-source suite of mobile privacy apps for Android and iOS, including an ad blocker, VPN, and parental control app. It offe… | 67 | 3266 | active |
| homenc/HElib HElib is an open-source C++ library implementing homomorphic encryption, supporting the BGV scheme with bootstrapping and the CKKS approxim… | 23 | 3252 | stable |
| am-cf-tunnel A JavaScript script deployed on Cloudflare Workers and Pages that generates free VLESS and Trojan proxy nodes and converts their configurat… | 88 | 3159 | active |
| uku/Unblock-Youku Unblock Youku is an open-source Chrome extension that lets users outside mainland China access Chinese web services such as video and music… | 32 | 3153 | active |
| mozilla/multi-account-containers A Firefox browser extension by Mozilla that separates browsing into color-coded containers with isolated cookie storage, letting users run … | 86 | 3146 | active |
| Virtual-Browser/VirtualBrowser VirtualBrowser is a free, open-source anti-fingerprint browser built on Chromium that lets users create and manage multiple isolated browse… | 88 | 3145 | active |
| adryfish/fingerprint-chromium A fingerprint browser built on Ungoogled Chromium that lets users spoof or control browser fingerprint characteristics to avoid detection. … | 83 | 3110 | active |
| fanqiang A curated collection of free censorship-circumvention tools, pre-configured one-click proxy browsers, and free proxy accounts/nodes (shadow… | 61 | 3080 | active |
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