SpectrTech — Offline Single-File HTML Apps
SpectrTech builds self-contained HTML applications that run entirely in the browser — no server, no database, no installation, no account required.
Each product is a single HTML file with everything inside: interface, logic, styles and fonts. Open it in any modern browser and it works, even offline. Data stays on the user's device in local storage, with backup and restore built in.
What you get with every item:
- Clean, readable HTML/CSS/JavaScript source
- Multi-language interface and theme support
- PDF and spreadsheet export where relevant
- Quick-start documentation
Use them as ready-to-sell products, rebrand them for your clients, or study the code as a reference for building offline-first web apps.
Support for every item is provided through the Codegrape support section.
