legal

Company details

Ktesio is a software company in Rotterdam, registered with the Dutch Chamber of Commerce (KVK). It publishes ktesio.dev, the open-source projects on it, and their sites, such as hekma.ktesio.dev.

Trade names
Ktesio, astro90, Heronis
Chamber of Commerce (KVK)
42172743
Registered
, in the Netherlands
VAT ID (btw-identificatienummer)
NL005556854B35
Post address
Postbus 21534, 3001 AM Rotterdam
Email
legal@ktesio.com
Founder
Islam Magdy
Based in
Rotterdam, the Netherlands

Open source

Ktesio’s open-source projects are licensed separately. The LICENSE file in each repository sets the terms: Hekma is licensed under the Apache License 2.0, and bite under the MIT License.

A project’s licence covers its code, not the Ktesio and Hekma names or logos. The trademark policy says how you can use them.

These websites

Text, design, the Ktesio name and logo and the Hekma name and mark © 2026 Ktesio. The sites use the Source Serif 4 and Source Code Pro typefaces under the SIL Open Font License 1.1. How they handle personal data is described in the privacy statement.

The company site is ktesio.com.