We build software products and deliver web, SEO, and AI services, then run our own company on the same tools. What ships to you, we have already lived with.
Each product solves a real problem we hit ourselves. They share one login and connect to each other, but each one stands on its own.
New
Digital business cards & dynamic QR codes
Create dynamic QR codes, share contact info via digital business cards, capture leads at events, and track every scan in real time.
Passwords & secrets management
Zero-knowledge password and secrets management. A bring-your-own-vault model puts you in control of where your encrypted data lives.
Project management & team comms
Team communications and project management with secure external sharing through the Fortilis bridge.
Sales pipeline & invoicing
From lead to ledger. Built for service businesses where a deal becomes a job becomes an invoice, on one platform.
Field inventory for construction
Construction inventory with a web dashboard and an Android field app. Scan barcodes, check tools out to jobs, and keep an audit trail of every movement.
We do not ship software we would not run our own company on. Before a product reaches you, it has already survived our own sales, our own credentials, our own projects, and our own field work. That is the bar.
The same craft we use internally is available to you, including the answer-engine and generative-engine visibility playbook we run on this very site.
New to any of this? Our Learn section explains agents, skills, and the rest of AI in plain English, no hype.
Custom GPTs and Claude agents tailored to your workflow. Paige V2 is our publicly inspectable reference build in the ChatGPT store.
See our agents practiceSkills are how Claude does the repetitive parts of a workflow reliably and verifiably, and how we ship faster than our size implies.
See our skills practiceWebsite design and optimization, including answer-engine and generative-engine visibility, the same playbook we apply to our own site.
See our servicesTwo surfaces that carry the GDK Digital craft beyond the gdkdigital.com platform.
Sibling brand · feathersai.ai
AI low-slope roofing estimator for commercial roofing pros. EPDM, TPO, and PVC takeoffs with 25+ manufacturer profiles (Carlisle, GAF, Sika Sarnafil, Mule-Hide, and more).
Independent visual identity and its own canonical domain. OAuth via the GDK platform; entitlements managed centrally.
Three GPTs live in ChatGPT
Paige V2 for brainstorming, Master Prompt Maker for prompt design, and Social Post Creator for platform-native content. Free to use; some features require ChatGPT Plus.
Publicly inspectable reference builds for our Custom GPT & agents practice. If you want one of your own, talk to us.
Create an account to explore the platform, or talk to us about which product fits your business.
GDK Digital builds practical software for small teams and service businesses: GDK-CRM (sales pipeline to invoicing), Fortilis (password and secrets management), FTC (project management and communications), GDK Nexus (dynamic QR codes and digital business cards), and Tavira (field inventory for construction). We also build custom AI agents and Claude Skills. Feathers AI, an AI roofing estimator, is a sibling brand on its own domain.
We run our own company's delivery on the same software we sell. The CRM we sell is the CRM we use; the credential manager we sell is the credential manager we use. The longest-running case study for GDK Digital is GDK Digital itself.
The platform products - Fortilis, FTC, GDK-CRM, and GDK Nexus - share a single platform account and unified authentication. Each product still owns its own workspace and data once you are inside it. Tavira currently runs on its own sign-in.
Yes. We build custom GPTs and Claude agents and skills tailored to a specific workflow. Three of our GPTs are live in ChatGPT today: Paige V2 (brainstorming), Master Prompt Maker (prompt design), and Social Post Creator (platform-native social content). If you want one of your own, contact us.
Create an account to explore the platform, or contact the team to talk through which product fits your business. Pricing for each product is published on the pricing page.
Yes. We design and build websites for small businesses, and our primary offer is a complete build with handoff, so you own everything. If you would rather not manage anything, we can also host and maintain your site as an optional add-on. The sites we have shipped are on our Built by GDK page.
Much of it, yes. GDK-CRM covers sales pipeline to invoicing, FTC covers projects and team communications, Fortilis covers passwords and secrets, and GDK Nexus covers QR codes and digital business cards, all under one login. Tavira adds field inventory for construction on its own sign-in. For everything else, we build custom integrations and AI workflows.