1. Build & add interactive calculators to your website! Choose from more than 50 premade calculators or build your own from scratch. No coding required. Free plan available. Zapier Integration. Publish Anywhere.

    freemium $6.0 / Monthly ("PayPal payments", "Order From", "Mail Results", "Zapier")

  2. fancyapps.com - Fancy App Store

  3. Pixlr® makes it easy to transform everyday images into stunning works of art.

  4. Mathematica is a technical computing system with a broad range of uses throughout various fields of discipline.

  5. Mapnik is a Free Toolkit for developing mapping applications.

  6. P

    Generate realistic product shots in seconds

  7. Prototyping and collaboration for design teams

  8. SV

    View, version, and share your .sketch files on the web

  9. Collaboration app for UI designers & frontend developers

  10. Balsamiq. Rapid, effective and fun wireframing software.

  11. Build dynamic, responsive websites in your browser. Launch with a click. Or export your squeaky-clean code to host wherever you'd like. Discover the professional website builder made for designers.

  12. System dynamics program with additional features for economics