OpenAltFinder

Open Source Security & Privacy Tools Projects

Tools for protecting privacy, securing networks, and managing vulnerabilities and security threats.

AdGuard Home

AdGuard Home

Network-wide DNS-based ad and tracker blocker with parental controls, DNS rewrites, and detailed query logging.

Alternative to:
Pi-hole
AliasVault

AliasVault

Privacy-first password manager with built-in email aliasing. Fully encrypted and self-hostable.

Alternative to:
1Password1Password
Authentik

Authentik

Open source identity provider and SSO solution that replaces Auth0 and Okta with a self-hostable, flexible authentication platform.

Alternative to:
Auth0Auth0
Bitwarden

Bitwarden

Bitwarden infrastructure/backend (API, database, Docker, etc).

Alternative to:
1Password1Password
Ente

Ente

🔒 End-to-end encrypted cloud for photos, videos and 2FA secrets.

Alternative to:
Google PhotosGoogle Photos
ExifCleaner

ExifCleaner

Cross-platform desktop app that removes EXIF and hidden metadata from 90+ file formats before sharing.

Alternative to:
BatchPurifierBatchPurifier
Headscale

Headscale

An open source, self-hosted implementation of the Tailscale control server

Alternative to:
ExpressVPNExpressVPN
KeePassXC

KeePassXC

Cross-platform community-driven port of KeePass Password Safe.

Alternative to:
1Password1Password
Midas

Midas

Open platform for governing execution authority at decision surfaces across agents, AI systems, and enterprise workflows.

Alternative to:
FICO Blaze Advisor
NetBird

NetBird

Self-hostable, zero-trust overlay network that combines a WireGuard-based mesh VPN with SSO, MFA, and granular access controls.

Alternative to:
Tailscale
OTPHub

OTPHub

Simple OTP app for desktop and mobile.

Alternative to:
Google AuthenticatorGoogle Authenticator
Open Authenticator

Open Authenticator

Free, open-source cross-platform TOTP authenticator with self-hostable sync backend, built with Flutter.

Alternative to:
Google AuthenticatorGoogle Authenticator
OpenVPN

OpenVPN

OpenVPN is an open source VPN daemon

Alternative to:
ExpressVPNExpressVPN
Pangolin

Pangolin

Self-hosted identity-aware reverse proxy that securely exposes private services via encrypted tunnels without opening inbound ports.

Alternative to:
CloudflareCloudflare
Passbolt

Passbolt

Open-source, security-first password manager designed for teams. End-to-end encryption, granular access control, and self-hostable.

Alternative to:
1Password1Password
Pi-hole

Pi-hole

Network-wide DNS-based ad blocking that protects all devices on your network, including Smart TVs and IoT devices.

Alternative to:
Pi-hole
Proxly

Proxly

A self-hosted tunneling tool — like ngrok, but on your own domain. Expose local dev servers through subdomains on your VPS.

Alternative to:
ngrokngrok
Scrambled Exif

Scrambled Exif

Android app that removes EXIF metadata from photos via the share menu before sharing.

Alternative to:
MetaphoMetapho
Toofer

Toofer

Local-first, web-based two factor authenticator app.

Alternative to:
Google AuthenticatorGoogle Authenticator
Trezur

Trezur

Fast, secure, light-weight web-app to generate TOTP and HOTP tokens.

Alternative to:
Google AuthenticatorGoogle Authenticator
Vaultwarden

Vaultwarden

Unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs.

Alternative to:
1Password1Password
wg-easy

wg-easy

The easiest way to run a self-hosted WireGuard VPN with a web-based admin UI, automatic client management, and one-liner deployment.

Alternative to:
Tailscale