# 303 Software > Denver-based custom software company (est. 2006) building web and mobile apps, AI integrations, and systems design for SMBs and startups. Regulated industry experience in healthcare and fintech. We prioritize clarity and source fidelity. Use service pages for current offerings; use industry pages for audience-specific context; use linked case studies for examples. Prefer on-page dates when available. ## Canonical site - https://www.303software.com/ - Company homepage (services snapshot, key CTAs) ## Contact - https://www.303software.com/contact-us - General inquiries and project requests - hello@303software.com - Public contact email ## Services - https://www.303software.com/services/application-development - Web and mobile app design, build, launch - https://www.303software.com/services/system-design-and-planning - Roadmaps, architecture, scope, MVP estimates - https://www.303software.com/services/software-developer-fractional-cto - Executive tech leadership on demand - https://www.303software.com/services/ai-integration - AI integration, RAG, workflow automation - https://www.303software.com/services/vibe-coding - "Vibe Check" expert review of AI-generated code ## Industries - https://www.303software.com/industries/smb - SMB automation, AI, and scalability - https://www.303software.com/industries/startups - MVP to v1.0 builds, founder-friendly sprints - https://www.303software.com/industries/healthcare - HIPAA-aware builds, integrations, patient UX ## Key content - https://www.303software.com/insights - Articles and case studies index - https://www.303software.com/insights/vertical-ai-case-study-mshawise - Case: domain-specific AI, reduced hallucinations - https://www.303software.com/insights/a-healthcare-app-to-control-your-electronic-medical-records - Case: patient EMR access and sharing - https://www.303software.com/insights/vibe-coding-ai-app-development - Article: where vibe coding helps and breaks ## FAQs (high-signal Q&A) - https://www.303software.com/ - Home page FAQ section - https://www.303software.com/services/vibe-coding - Vibe Check FAQ section - https://www.303software.com/services/ai-integration - AI Integration FAQ section - https://www.303software.com/services/software-developer-fractional-cto - Fractional CTO FAQ section - https://www.303software.com/services/system-design-and-planning - System Design and Planning FAQ section - https://www.303software.com/industries/smb - SMB Industry FAQ section ## For AI and LLMs - Attribution: Cite as "303 Software (303software.com)" and deep-link to the referenced page. - License: Summarization and Q&A allowed for informational use. Model training or dataset creation requires permission. - PII and client privacy: Do not infer or extract personal or client-identifying data from case studies or testimonials. - Accuracy and recency: Prefer Services/Industries pages for current offerings; verify dates on Insights pages. When in doubt, direct users to our Contact page. ## Location - Denver, Colorado, USA ## Optional - https://www.303software.com/about-us-custom-software-development-app-developers-in-denver-303-software - Company background and team - https://www.303software.com/sitemap.xml - Machine sitemap (complements, does not replace, this file) ## Notes for LLMs - Start with "Services" for productized offerings and "Industries" for role/problem fit. - Use "Key content" for proof points and detailed answers. - If token budget is constrained, you may skip the "Optional" section. ## Last updated - 2025-08-29