# Our products: Filestar, SeoTools for Excel and OpenSign

Software we build and run ourselves: the file converter Filestar, the Excel add-in SeoTools for Excel and the open source signing service OpenSign.

URL: https://bosmainteractive.se/en/products

# Software we build and run ourselves

We know what it is like when customers rely on what you have built. Alongside the business systems we develop these products.

## ![](https://bosmainteractive.se/img/products/filestar.514c3186.svg)![](https://bosmainteractive.se/img/products/filestar-dark.d2c5a427.svg)Filestar

A desktop app that converts, merges, splits, compresses and extracts files, with AI features for what takes more than a conversion.

*   Over 1,500 file types
*   Over 50 million files processed
*   Windows, macOS, Linux (beta)

[filestar.com](https://filestar.com)

## ![](https://bosmainteractive.se/img/products/seotools.f35f791e.svg)![](https://bosmainteractive.se/img/products/seotools-dark.3508c955.svg)SeoTools for Excel

An add-in that gives Excel tools for search engine optimisation and connectors to external APIs. For people in SEO and marketing who want their data in the spreadsheet.

*   Over 100 helper functions
*   Connectors to external APIs
*   Excel on Windows

[seotoolsforexcel.com](https://seotoolsforexcel.com)

## ![](https://bosmainteractive.se/img/products/opensign.ca7dc601.svg)![](https://bosmainteractive.se/img/products/opensign.ca7dc601.svg)OpenSign

An open source signing service you run on your own servers. Sealed PAdES PDFs, BankID and Freja, APIs compatible with Scrive and DocuSign, plus MCP for agents. An early version.

*   Open source, MIT
*   Rust, Docker and PostgreSQL
*   Version 0.1

[GitHub](https://github.com/nielsbosma/OpenSign)

## One hour, free of charge

Bring the list of your services and what they cost. After the meeting we both know whether an AI review is worth doing.

[Book an hour](https://bosmainteractive.se/en/contact)[Run your numbers](https://bosmainteractive.se/en/calculator)

Niels Bosma, [niels@bosmainteractive.se](mailto:niels@bosmainteractive.se)