Enhance privacy protection and your OS secuirty

A local DNS proxy which caches the responses coming from your DNS servers and helps you fight unwanted ads through a custom HOSTS file.

  • See Chinese re-build version here


Free removal tool for adware, PUP/LPI, Toolbars and Hijacker.

Authy Desktop

Sync your 2FA info across multiple devices.

Bitwarden GPL 3.0@GitHub:

Open-source & light password manager with free cloud sync

Buttercup GPL 3.0@GitHub:

A password manager based on JavaScript, elegant, brief, compatible with few other types of databases.


A light-weighted & award-winning PC optimization tool.

Personal Firewall & HIPS protection

Cryptomator MIT X Consortium & Others@GitHub:

Encrpty your cloud files.

Free client-side encryption for your cloud files


Encrypt your files in an elegant way.


Network security monitoring tool and analyzer that visualizes your network activity.

KeePass GPL 2.0+@SourceForge:

Open source password manager.


Powerful all-in-one password manager and keeper with free cloud sync across all platform.


Internet traffic control and monitoring tool

A local DNS server based on WinPcap and LibPcap to prevent DNS pollution & to improve DNS query reliability by multi-server requesting

Revoke any doubeful/illegal certificates, most of which are from China.


A sandbox-based isolation program.

A simple management tool to configure dnscrypt-proxy to prevent DNS spoofing.

VeraCrypt Apache 2.0@HOMEPAGE:

Open-source & cross-platform disk encryption software.


A web proxy tool.