CrownPDF - Create PDFs on the go.
Observable Notebooks - The portfolio and technical blog of Chris Henrick – provider of professional web development, data visualization, GIS, mapping, & cartography services.
Smart PDF Forms by JotForm - Filling out PDF Form is easier than thought. Upload your PDF, convert to online web form and accept form responses in PDF Format. Try Online PDF Form Filler now!
Jupyter - Project Jupyter exists to develop open-source software, open-standards, and services for interactive computing across dozens of programming languages. Ready to get started? Try it in your browser Install the Notebook.
Grid - Grid is software designed to assist professionals in creating quality software. The software features a number of essential features for dedicated coding specialists, each of which can prove invaluable in the long run. Read more about Grid.
BeakerX - Open Source Polyglot Data Science Tool