Cal.diy
Business & Operations
A community-driven, MIT-licensed, self-hosted scheduling tool forked from Cal.com with enterprise features removed. No managed version exists; personal, non-production use is recommended.
Business & Operations
4 apps · Ranking for this category →
Apps with 3+ ratings come first; unrated apps follow in name order.
Cosense (Scrapbox)
Business & Operations
A tool for sharing and organizing knowledge by writing and linking pages. Free for personal or non-profit use; the Business plan is listed at JPY 1,100 per user per month.
Free planJapanese UI
KantanProEX（DT）
Business & Operations
A sales management app for freelancers, sole proprietors and small businesses. Manage customers, orders, invoices, services, partner companies and reports in one screen, and create, print or export quotes and invoices as PDF. It runs only on your Mac or Windows PC — your data is never stored online. No subscription: download it free and try every feature for the first 30 days.
Free planAIJapanese UI
Obsidian
Business & Operations
A note-taking app that is free for personal use, with paid add-ons for Sync and Publish.
Free plan