SourceTable is a software company that’s reimagining the spreadsheet as a powerful, AI-driven data platform for modern business workflows. Pulse 2.0 interviewed SourceTable founder and CEO Eoin McMillan to gain a deeper understanding of the company.
Eoin McMillan’s Background
Can you tell me more about your background? McMillan said:
“I’m Eoin McMillan, founder and CEO of Sourcetable, an AI-native spreadsheet. I studied sociology, got obsessed with networks, and moved to San Francisco 14 years ago chasing the dream that technology could better a better world. Since then, I’ve been somewhere between engineer and operator — building data pipelines, dashboards, automation workflows, and generally trying to help people understand their data without losing their minds in the process.”
Formation Of The Company
How did the idea for the company come together? McMillan shared:
“We ran a consulting shop building data tools, and it became obvious that traditional spreadsheets — while beloved — are wildly unfit for modern data work. They were never designed with real compute or storage in mind. We wanted to fix that. Then we noticed AI could make spreadsheets not just better, but radically more useful. Less ‘numbers in boxes,’ more ‘your intelligent data assistant.’”
Favorite Memory
What has been your favorite memory working for the company so far? McMillan reflected:
“Showing people the product and watching their brains short-circuit a little. You speak to the spreadsheet, and it does what you want. Every time someone goes from skepticism to awe, I think: yep, we’re onto something.”
Core Products
What are the company’s core products and features? McMillan explained:
“It’s a full-featured spreadsheet — imports, charts, pivots, the usual suspects — but with an AI layer that actually does things. It writes formulas, cleans data, translates, summarizes, analyzes. Basically, it handles the tedious stuff and helps with the confusing stuff. Analysts love it. Researchers too. Anyone who’s sick of wrestling with Excel.”
Challenges Faced
Have you faced any challenges in your sector of work recently, and how did you overcome them? McMillan acknowledged:
“Scoping was our biggest headache — figuring out what the user means when they say ‘this row’ or ‘that table.’ Spreadsheets are full of implied context. Getting AI to understand what the user wants in context is non-trivial. But we cracked it. I’d wager we have the best contextual understanding in any spreadsheet product today.”
Customer Success Stories
Can you share specific customer success stories? McMillan highlighted:
“A real estate firm cut hours of report-splitting down to minutes. A virtual assistant turned a 30-hour research slog into a 5-minute task. Both ended up training their teams on the product — not because they had to, but because they wanted everyone else to see how magical it was. The people who get the most value from Sourcetable tend to have long, tedious spreadsheet tasks. AI is great for massively speeding up these boring workflows.”
“Personally, I use Sourcetable to run Sourcetable, so it’s dogfooding every day.”
Funding And Revenue
Are you able to discuss funding and/or revenue metrics? McMillan revealed:
“We don’t share revenue. We recently announced the close of a $4.3 million seed round led by Bee Partners, with some very sharp folks joining us — the CTO of Hugging Face, Roger Bamford who architected Oracle DB, and Preston-Werner Ventures, the GitHub co-founder’s fund. Smart people betting on smarter spreadsheets.”
Total Addressable Market
What is the total addressable market size the company’s pursuing? McMillan assessed:
“Spreadsheets run capitalism. Over a billion people use them, and Excel alone is worth more than the entire Business Intelligence sector combined. That’s not a market — it’s a gravitational field. We’re building the AI spreadsheet that the next billion users (including AI agents) will use.”
Differentiation From The Competition
What differentiates the company from its competition? McMillan affirmed:
“Most spreadsheets are dumb. Ours is smart. It understands what you’re trying to do, can plan and complete multi-step tasks, and pulls data from wherever it lives. Under the hood, it’s a real data platform. On the surface, it’s an elegant spreadsheet that just gets you. It outclasses Excel Copilot and Sheets Gemini in real-world usefulness.”
Future Company Goals
What are some of the company’s future goals? McMillan emphasized:
“We’re laser-focused on building the world’s best AI spreadsheet — because spreadsheets are where work actually happens. Long term, we want to be a platform for other agents and developers. Think App Store, but for AI workflows living inside your spreadsheet.”
Additional Thoughts
Any other topics you would like to discuss? McMillan concluded:
“Spreadsheets are civilization’s memory — from clay tablets to Excel. Now we’re fusing that memory with on-demand intelligence. Better spreadsheets = better thinking = better work = better society. That’s what gets us up in the morning.”
