Hi @acaprojecten, I’m so excited for you to get your Glowforge! I see you’ve been given a bit of help from the community already. Those are some great tools, there is another discussion on iPads used by Glowforge Owners and that can be found here: iPad and Glowforge You can create Glowforge-compatible files from a variety of different software platforms like Adobe Illustrator, Inkscape, CorelDraw, Adobe Photoshop, GIMP, Autodesk Fusion 360, & Sketchup.
If you have any other questions or concerns feel free to reach out to us at support@glowforge.com.