Tenno – Markdown and JavaScript = a hybrid of Word and Excel
Tenno is a web app that lets you create Markdown documents that can include computational cells. You can think of it as a mix of Word and Excel, some sort of "literate programming" environment. This is still an early version but I wanted to get some feedback from HN on what could be nice features to add. Check out the Docs and examples page, it has a ton of (in my humble opinion) cool stuff! Why did I build this? I was building some estimation for cloud costs in Google Sheets and I quickly ended up with a mess. I realized that if I wanted to analyze how a certain thing changes wrt to…
Tenno – Markdown and JavaScript = a hybrid of Word and Excel launched on October 10, 2024 with 401 votes, #88 of 5,185 launches that month and more than 99% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
Tenno is a web application that combines Markdown documents with computational cells, functioning as a hybrid between word processors and spreadsheet software. It enables users to write formatted text alongside executable code, making it suitable for analysis, calculations, and documentation in a single environment. The tool is designed for those who find traditional spreadsheets unwieldy for complex computational tasks, offering features like function definition and data visualization across multiple variables.
written from the facts on this page · September 2026
From the sources
Tenno is an app that lets you create powerful dynamic documents where you can easily add and orchestrate computational elements. You can think of it as a mix between Word and Excel with a sprinkle of Javascript. You could also think of it as a more interactive and user friendly version of Jupyter notebooks. With Tenno you can build formulas like you do in spreadsheets, you can create charts, but y
In the maker’s words, at launch
Tenno is a web app that lets you create Markdown documents that can include computational cells. You can think of it as a mix of Word and Excel, some sort of "literate programming" environment. This is still an early version but I wanted to get some feedback from HN on what could be nice features to add. Check out…
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