We build tools
people actually use.
NexusDigitalLabs is an independent, privacy-first software studio. We build free tools and guides for freelancers and AI builders, FreelanceOS for running a freelance business, and custom software for clients. Calculation tools run fully client-side, so your inputs stay in the browser unless you opt into sync or sign-in.
Maintained in the open on github.com/NexusDigitalLabs.
Mission
Utility over complexity.
The web doesn't need more bloated SaaS platforms. It needs sharp, single-purpose tools that do exactly what they say — fast, privately, and without unnecessary friction.
Most tools run entirely in your browser. Fuel Tracker can sync via an anonymous code with no account. Sign-in is optional: link a garage, sync game scores, or enable Invoice/Debt cloud drafts when you want restore-across-devices. FreelanceOS is the one product that needs an account — it stores your clients, projects and invoices so you can run your business from any device.
Principles
Privacy by default
Client-side tools keep your work private. Optional accounts use auth cookies only when you sign in. Advertising cookies, if ads are enabled, are disclosed in the Privacy Policy.
Zero-bloat architecture
Every dependency has to earn its place. No tracking SDKs, no heavy client-side state engines.
Performance as a feature
Fast load, fast interaction, no layout shift — speed is designed in from the start, not patched on later.
Accessible by design
Core tools are free with no account required, and FreelanceOS is free during its beta. Built lean so access stays wide.
What we value
The way we build.
Speed first
Every millisecond matters. We optimise for LCP, INP, and CLS from the first line of code — not after the fact.
Privacy as architecture
Privacy isn't bolted on — it's the foundation. Most tools process your inputs in the browser; optional cloud features are opt-in and documented.
Minimal footprint
A small, readable codebase on a deliberately short list of dependencies — easy to audit, quick to load.
Keyboard accessible
Every tool is fully navigable by keyboard with clear focus states. Accessibility is non-negotiable.
Tech stack
Intentionally lean.
The public site is a Next.js App Router app written in TypeScript and React, styled with Tailwind CSS, and hosted on Vercel. Optional accounts, Fuel Tracker sync, and page-view counters use Supabase (Postgres + Auth). Most calculators and generators never send your document or number inputs to our servers.
TypeScript
Typed app & API routes
React
Server + Client components
Next.js
App Router on Vercel
Tailwind CSS
Utility-first styling
Supabase
Auth, Postgres, optional sync
Vercel
Static + serverless hosting
FAQ
Common questions.
Who built NexusDigitalLabs?
NexusDigitalLabs is an independent software project. The tools, articles, and games are built and maintained by developers shipping from the NexusDigitalLabs GitHub organization (github.com/NexusDigitalLabs). We focus on useful, auditable utilities without unnecessary complexity.
Are the tools free to use?
Yes — core tools are free to use with no account required. Optional sign-in unlocks extras such as linking a Fuel Tracker garage to your account. FreelanceOS is free during its beta; paid plans for advanced features may come later, but the core tools stay free.
Do you take on custom projects?
Yes. Alongside our own products, the studio builds custom web apps, internal tools and AI features for clients. Tell us about your project on the Contact page and we’ll get back to you.
Do you collect any user data?
Most tools process everything in your browser. Fuel Tracker stores vehicles and fill-ups under a sync code you choose (no email required). If you sign in, we store account profile data (email, display name, avatar) via Supabase Auth, optional garage linking, optional game high-score sync, and optional Invoice/Debt cloud drafts you explicitly enable. FreelanceOS stores the business records you enter (clients, projects, invoices, payments, expenses) in your private workspace. Contact form messages are emailed to us via our provider. Analytics (Umami), page counters, and ads (where shown) are disclosed in the Privacy Policy.
Can I suggest a tool or feature?
Yes. Use the Contact page to send a suggestion. We build what we find genuinely useful, so real-world requests from real users carry a lot of weight in what gets prioritised next.
How do I report a bug or request a feature?
Use the Contact page to send us a message. We review every submission and prioritise based on real-world impact and frequency of request.
Why not use a popular framework like WordPress or Webflow?
WordPress and Webflow solve the wrong problem for what we're building. Managed CMSs add complexity, cookies, plugin dependencies, and performance overhead that are simply unnecessary for a site built around lightweight, client-side tools. Next.js and React give us full control with zero compromise on speed or privacy.
Got feedback or a feature idea?
Suggestions, bug reports, and feature ideas are always welcome. Reach out anytime.