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About the startup
A commons of professional calculators: 145 today across engineering, finance, statistics, and everyday decisions, growing weekly. Every one is a spreadsheet model computed live, with methodology and references on the page, so the number comes from verified logic rather than hand-written code or an AI's arithmetic. AI agents call the same calculators over MCP. Open beta; spreadsheet downloads and community contributions open when we leave beta. Free, ad-free, no account.
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Explore expertise in Productivity & Collaboration
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TechnomanagersIIM Bangalore & IIT Kanpur alumni are helping you land your dream career in Management or Technology. |
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Media about Productivity & Collaboration
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Founder stories from Productivity & Collaboration startups
See all →Retold founder accounts from startups in the same category, each linked to the original.
| Story |
|---|
Buffer's first paying customer arrived four days after a seven-week buildJoel Gascoigne validated Buffer with a two-page landing flow, spent seven weeks of evenings and weekends on a minimal product, launched on 30 November 2010, and recorded a first paying customer within four days. |
Tibo stated sub-$2M ARR at sale and $6–7M later, not catalog $3.5MIn a January 2024 Bootstrapped Founder interview, Thibault Louis-Lucas did not quote a $10M sale price or $3.5M ARR; he said Lempire acquired them below $2M annual recurring revenue and that they were nearing $6–7M, with |
Tally's March 2024 letter is $100k MRR, not a $3M ARR stampMarie Martens wrote that Tally, launched in summer 2020 with Filip, hit $100k monthly recurring revenue in February 2024 with a bootstrapped team of three and more than 250,000 users; this record uses those founder label |
Ajay Goel priced GMass after a free year, not after an ARR headlineAjay Goel’s own GMass posts give send volume, user counts, and plan prices. In a later interview he described a $10,000 first build, a free first year, and $10,000 to $20,000 a month after the paywall. He did not state $ |
Browse Productivity & Collaboration categories
See all →Subcategories in the same part of the directory, with the number of listed products.
| Category |
|---|
Project & task management4,060 listed products |
Time tracking & focus2,858 listed products |
Search, browsers & utilities2,610 listed products |
Notes & knowledge management2,090 listed products |
Documents & PDF1,677 listed products |
File storage & transfer1,068 listed products |
Meetings & team communication871 listed products |
Whiteboards & mind maps550 listed products |