Free offline business tools
One Page Business Tools
A small directory of practical tools that run without login, accounts, analytics, APIs, or a backend. Current tools cover Codex CLI diagnostics, order profit break-even checks, fixed-price project quote buffers, AI API budget burn estimates, and creator sponsor quote floors.
Guides
Fixed-price software quote calculator and risk buffer guide
中文：退款、退货货损、双向物流和广告之后，SKU 还赚不赚钱
中文：Codex CLI 装不上、登录失败、连不上时先查什么
Launch interest and safe purchase-intent forms
AI API Budget Guard: estimate API budget burn and safe call volume
Creator Sponsor Rate Card: estimate sponsor quote floors
FixedBid sample quote: 40 likely hours to a P80 floor
Paid product status
Planned paid offers include a Codex diagnostic report service, an Order Profit Line multi-SKU version, FixedBid Lab Pro, AI API Budget Guard Pro, and Creator Sponsor Rate Card Pro. Paid links are not live yet, and no private payments are accepted through direct messages, issues, or transfers.
If you want launch notifications, use the launch interest page or follow the public issues: all paid links, Codex diagnosis, Order Profit Line Pro, FixedBid Lab Pro, AI API Budget Guard Pro, or Creator Sponsor Rate Card Pro.
Do not send passwords, one-time codes, API keys, access tokens, identity documents, full logs, source code, full configuration, shop admin screenshots, customer data, or payment details.