We are the CalfSystem® team, focused on building desktop AI search traffic growth agents. Trusted by 2,800+ SEO teams and businesses worldwide.
Automate the entire SEO workflow with AI, enabling every business to access world-class SEO capabilities without expensive agency fees.
Become the de facto standard for desktop AI SEO tools globally, lower the barrier to professional SEO tooling, and put data back in users' hands.
User data belongs to users · Tools serve people · Continuous innovation · Open-source collaboration · Compliance is non-negotiable.
Team assembled, established the "desktop + local data + AI" direction.
Desktop SEO tool debut, Playwright browser integration, 5-engine tracking.
Gemma local AI + 15 online AI providers, AI chat reinvents the SEO workflow.
Google Search Console full-module integration, hardened Python plugin sandbox.
9 local AI models (Apache 2.0/MIT/Gemma ToS) with zero monthly fees, AI Agent 7-tool automation, Llama-3 → Qwen2.5 removes MAU restrictions.
All SEO data and AI chats are stored in your own local SQLite database. Nothing uploaded to the cloud. Avoid data breach exposure.
Pay once, use long-term. Includes updates within the current major version. No subscription, no feature gates.
Qwen3 / Qwen2.5 / Mistral / DeepSeek-R1 / Phi-4 / Gemma — all commercially usable, Apache 2.0 / MIT open source.
PIPL (China Personal Information Protection Law) + GDPR (EU) dual compliance. Legal peace of mind, zero audit stress.
Professional+ supports custom Python plugins with sandbox isolation (network/files/DB blocked by default). Extend functionality infinitely.
7 SEO tools + iterative workflow (up to 3 rounds) + real-time status bar. Complete an entire SEO workflow in a single conversation.
Xiaoniu® (classes 09 + 42), iCalf® (09 + 42), Niuxingsheng® (09/35/38/42) all registered in China.
CalfSystem® has been filed with USPTO (US, $700) and EUIPO (EU, €1,000) for trademark protection.
Primary domains: seotoolsdownload.net (international) + seotoolsdownload.net (China).
粤ICP备15064139号-5 completed.