Built by founders,
for founders.
Open-source tools, tutorials, and resources — completely free. The Baselumen arm of Stacklumen: themes, brand assets, design tokens, and the working notes behind everything we ship.
What is Baselumen.
Baselumen is the components and resources arm of Stacklumen — a library of free tools, design tokens, downloadable assets, and tutorials, drawn directly from the work we do for paying clients.
- +Free tools. Production-grade resources you can download, customize, and ship.
- +Tutorials. Step-by-step guides from actual engagements, not theoretical examples.
- +Brand assets. Design tokens, icons, templates — the building blocks we use ourselves.
- +Always free. No paywalls, no email gating on downloadables, no rights transfer.
Most of this library is in active development. The VS Code theme and Chrome theme are live and downloadable today; the rest is on the roadmap below.
Things you can grab today.
VS Code theme
Stacklumen for VS Code — pure-blue ladder over near-black surfaces, JetBrains Mono, gradient-heavy chrome via the Custom CSS and JS Loader companion overlay.
- ·Format: Dark Modern color overrides + standalone color theme JSON + Custom CSS overlay
- ·Size: ~22 KB
- ·Updated: June 2026
- ·License: Free for personal and commercial use
Chrome theme
A signature blue browser theme built for focus. Minimalist surfaces, our #0065FF accent, and a tab strip that stays out of the way.
- ·Format: Chrome theme package
- ·Size: ~5 MB
- ·Updated: January 2026
- ·License: Free for personal and commercial use
Brand guidelines PDF
A complete brand identity manual covering logo usage, color tokens, typography, voice, and design principles.
- ·Logo system
- ·Color tokens
- ·Typography rules
- ·Voice & tone
- ·Layout principles
Stacklumen brand kit
CSS custom properties, JSON tokens, palette SVG, and a usage README — the full Stacklumen visual language packaged for any project.
- ·tokens.css — Drop into :root for the whole palette + type scale + motion
- ·tokens.json — Style Dictionary / Tokens Studio compatible
- ·palette.svg — Single-file color reference
- ·README — Hairline rule, dark mode, typography, motion guidance
SEO + AEO audit checklist
The exact checklist we run on every site we audit — from site/canonical/robots to JSON-LD coverage and llms.txt. Save the PDF or run it interactively in Toolumen.
- ·18-point audit
- ·Severity grading
- ·Action items per finding
- ·AEO-specific section for answer engines
Presentation templates
Keynote and PowerPoint templates with Stacklumen typography, color tokens, and layout patterns.
- ·Title & section dividers
- ·Content layouts
- ·Data slides
- ·Narrative slides
- ·Closing & CTA
Astro starter (Stacklumen flavor)
A minimal Astro starter with our SEO scaffolding, MainLayout, brand tokens, and Cloudflare adapter pre-wired. Clone, deploy, ship.
- ·Astro 5 + React
- ·SEO + AEO scaffolding
- ·Cloudflare Workers adapter
- ·Webflow Cloud-ready
JSON-LD recipe pack
Copy-paste schema.org snippets for Organization, FAQPage, Product, Article, BreadcrumbList, HowTo, and more. The set we use on stacklumen.com.
- ·7 core schema types
- ·Real-world examples
- ·Cheat sheet
- ·Pairs with the Toolumen JSON-LD generator
Video walkthroughs.
Building a design system
Tokens, naming, components, and the hairline rule. ~12 minutes, advanced.
- Design tokens (naming, management)
- Component patterns
- The hairline rule
- Dark mode parity
- System maintenance
Pitch deck fundamentals
The 10-slide structure we use for client and investor decks. ~18 minutes, intermediate.
- 10-slide structure
- Problem slides
- Market size slides
- Traction slides
- Reading the room
Brand identity 101
Brand vs. logo, color choice frameworks, type pairing, voice. ~22 minutes, beginner.
- Brand vs. logo distinction
- Color choice framework
- Type pairing
- Voice development
- Identity systems
Strategic positioning
April Dunford's positioning canvas, applied. ~25 minutes, advanced.
- Dunford's positioning canvas
- Competitive alternatives selection
- Positioning-to-copy translation
- Testing positioning
- Repositioning strategy
Why we give back.
Open by default.
- ·No paywalls, no subscriptions, no hidden costs.
- ·Open-source where reasonable; otherwise free for personal + commercial use.
- ·Community-driven. Submissions credited and back-linked.
- ·Monthly updates — what shipped lives on the changelog.
[ Honest take ] Free resources are also good marketing — we know. The difference is we'd build these things even if no one used them, because we use them ourselves.
Built with transparency.
- P.01Use internally. Across multiple projects.
- P.02Generalize. Strip client specifics.
- P.03Test. External validation before publishing.
- P.04Ship. Publish with version info.
- P.05Maintain. Updates documented in the changelog.
Coming this year.
Contribute or get notified.
Submit a resource.
Built a tool, template, or tutorial that could help the community? We'd love to feature it. Resources stay in your name. No exclusivity, no rights transfer. Credit and back-link provided.
Email support@stacklumen.comGet notified.
No newsletter, no spam — just a single email when a new resource lands. Pick a specific resource above and we'll ping you when it ships.
Open the contact form