Douwe Osinga

Douwe Osinga

Founder at Neptyne.com
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Douwe Osinga
Neptyne lets you extend the functionality of spreadsheets by writing your own Python functions in an integrated editor and REPL. Import data from the web, implement your own custom formulas, and leverage the power of the vast ecosystem of Python packages.
Neptyne
Neptyne
Run Python in Google Sheets
Douwe Osinga
Keep a list of the countries you've been to in this convenient spreadsheet and get a beautiful map in the process you can use for bragging purposes!
Visited Countries Map
Visited Countries Map
A map of the countries you've been to in a spreadsheet
Douwe Osinga

The Million Dollar Coin is the first commemorative crypto coin, celebrating the cryptocurrency bubble.

Million Dollar Coin
Million Dollar Coin
The first commemorative crypto coin
Douwe Osinga
Landed by Triposo
Landed by Triposo
All the answers for your questions at airports you arrive
Douwe Osinga
Walter by Triposo
A smart (travel) compass showing where things are