Open Source Security & Privacy Software
Security & Privacy software manages network access, identity verification, and data encryption to protect digital environments. These tools block trackers at the DNS level, establish private tunnels between remote servers, and handle single sign-on authentication for multiple applications. This type of software serves system administrators and developers who need to manage login credentials and network traffic on their own hardware. Self-hosting these apps ensures that authentication logs and private encryption keys remain on local infrastructure rather than on external servers.
This page lists 102 open source tools in the Security & Privacy category. The most popular are LocalSend, PocketBase and Pi-hole. Most use the AGPL-3.0 or Apache-2.0 license, and 87 offer an official Docker image.
Converse
A client side XMPP chat application that runs in web browsers or as a desktop app.
Password Pusher
Securely share sensitive information using encrypted links that automatically expire after a set time or view count.
Yopass
Securely share secrets, passwords, and files using end-to-end encryption and automatic one-time expiration links.
OpenCanary
A multi-protocol network honeypot designed to detect intruders after they have breached non-public networks.
Kamailio
A SIP signaling server for large scale VoIP and real time communication platforms focusing on scalability.
Defguard
A self-hosted remote access platform combining WireGuard VPN with identity management and multi-factor authentication.
Quiet
A peer-to-peer team chat that syncs messages directly between devices over Tor without central servers.
ALTCHA
A self-hosted spam protection system using proof-of-work mechanisms to replace traditional visual CAPTCHA puzzles.
Wire
Provides end to end encrypted messaging, file sharing, and video calls for secure team communication and collaboration.
mCaptcha
A privacy respecting proof of work system that protects websites from bots without requiring image solving.
nheko
A native desktop client for the Matrix protocol designed to feel like a mainstream chat application.
Peergos
A peer to peer encrypted filesystem for secure file storage, sharing, and decentralized collaboration.
Tuwunel
A high performance Matrix homeserver written in Rust for scalable and low cost communication infrastructure.
Chitchatter
A decentralized peer to peer communication tool providing encrypted chat, video conferencing, and ephemeral file sharing.
IPBan
Blocks malicious IP addresses by detecting failed login attempts from event viewers and log files.
Beelzebub
A deception runtime framework that deploys adaptive LLM-powered decoy services to collect threat intelligence.
GO Feature Flag
A self-hosted cloud native feature flag solution for managing feature toggles and A/B testing experiments.
ShellHub
Centralized SSH gateway for remote access and management of Linux servers, IoT devices, and containers.
RetroShare
A decentralized communication toolkit providing secure file sharing, chat, forums, and messaging without central servers.
Plakar
A backup engine providing encrypted, deduplicated snapshots with support for databases, Kubernetes workloads, and object stores.
Bugsink
Self-hosted error tracking that captures application crashes and exceptions using Sentry compatible SDKs for real time monitoring.
Authgear
Manage user authentication, single sign-on, and identity access through a self-hosted or managed identity provider.
FeatBit
Manage feature flags and conduct A/B testing to decouple code deployments from feature releases in production.
UUSEC WAF
A web application firewall and API security gateway featuring AI and semantic analysis for threat detection.
Secluso
A private home security camera system for Raspberry Pi featuring end-to-end encrypted remote access and alerts.
GlobaLeaks
A secure reporting platform for whistleblowing that allows organizations to set up anonymous submission channels.
OpenSIPS
A multi-functionality SIP server implementation designed for professional communication platforms requiring high performance and security.
Tirreno
A security framework for detecting threats, fraud, and abuse through event ingestion and risk scoring.
Databag
A federated, self-hosted messenger featuring end-to-end encryption and topic-based threads for secure, decentralized communication.
Databunker
Self-hosted tool for secure personal records tokenization and storage of sensitive PII, PHI, and KYC data.
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