Startups using Ruby

Upload any PDF and let AI create flashcards in seconds. Import directly into Anki.

Lucanto is invoicing and expense management tool for freelancers and small businesses. Customer can handle invoices, expenses, and quotes in one flow. Our workspace allows also collaboration with accountant.

Otter is A/B testing software that measures revenue per variant, not just clicks. Run a split test and see conversion rate, average order value, and revenue per visitor side by side — so the change you ship is the one that actually grew the number your business runs on.

LevelCode is an AI-native code editor for macOS — open source (MIT, built on Code-OSS). Its agent plans, edits across files, runs commands, and verifies its own work behind approval gates: every edit lands as a reviewable Keep/Undo change, and every turn is a checkpoint you can rewind. Bring your own key (Claude, OpenAI, Ollama, any OpenAI-compatible) and run free and direct — or switch on the metered LevelCode Cloud gateway and pay each model's real cost, never a markup.

bugstack is an AI agent that monitors production code and fixes code level errors and exceptions as they occur. bugstack gathers context, stack trace, writes a minimal fix, runs your CI/CD pipeline and generates a PR or if confidence gates pass and the user chooses, auto merges to production. The bugstack repair pipeline operates in under 2 minutes from the moment an error occurs to the time it is repaired, even when you are asleep.

Turn boring Scrum tasks into a game. Tricer tracks time automatically in the background, captures quick notes for your daily, and brings teams together with AI-powered, gamified retros. Track time, vote poker stories, and grow your team Dino!

Bitcoin Treasury Map for verified companies

💡 Value Proposition: Dripmint is an AI-powered outbound platform that enables businesses to run highly personalized cold email campaigns with strong deliverability while protecting their sending domains from burnout.