Third-Party Licenses
Fast KSeF uses the following open-source libraries. We are grateful to the authors and contributors of these projects.
Frontend (main application)​
REST API server​
| Package | Version | License | Homepage |
|---|---|---|---|
| @akmf/ksef-fe-invoice-converter | 1.1.4-HF1 | ISC | — |
| @supabase/supabase-js | 2.103.0 | MIT | https://supabase.com |
| express | 4.x | MIT | https://expressjs.com |
| pdfmake | 0.3.7 | MIT | http://pdfmake.org |
| swagger-ui-express | 5.x | Apache-2.0 | https://github.com/scottie1984/swagger-ui-express |
| xml-js | 1.6.11 | MIT | https://github.com/nashwaan/xml-js |
Build & development tools​
| Package | Version | License | Homepage |
|---|---|---|---|
| @vitejs/plugin-react-swc | 3.11.0 | MIT | https://github.com/vitejs/vite-plugin-react |
| autoprefixer | 10.4.21 | MIT | — |
| esbuild | 0.25.0 | MIT | https://github.com/evanw/esbuild |
| eslint | 9.32.0 | MIT | https://eslint.org |
| postcss | 8.5.6 | MIT | https://postcss.org |
| tailwindcss | 3.4.17 | MIT | https://tailwindcss.com |
| typescript | 5.8.3 | Apache-2.0 | https://www.typescriptlang.org |
| vite | 5.4.19 | MIT | https://vite.dev |
| vitest | 3.2.4 | MIT | https://vitest.dev |
| @playwright/test | 1.59.1 | Apache-2.0 | https://playwright.dev |
info
This list was last updated on 2026-04-13. For the most current dependency versions, refer to the package.json files in the project repository.
For the full texts of the ISC, MIT, and Apache 2.0 licenses, see Full License Texts.