Most note-taking apps trade speed and simplicity for cloud sync and lock-in — your notes live in someone else's database, and opening the app takes a few seconds you feel every single time. OpenMarkdown goes the other way: a native app with a cold start under one second, storing everything as plain .md files on your own disk, with no account or database required. OpenMarkdown offers three editing modes (live preview, source, reading), a command palette (cmd+p), a CLI tool for terminal access, and multi-language support. Its standout feature is agent-native collaboration: because files are plain Markdown and it supports MCP, AI tools like Claude, ChatGPT and Gemini can read and edit the same notes you're working in, rather than you copy-pasting content back and forth. It's open source (51 GitHub stars), built with a native Rust core, cross-platform (macOS, Windows, Linux), and reached #5 Product of the Day on Product Hunt.
| # | Tool | Best for | Price |
|---|---|---|---|
| 1 | Équipes sécurité et CISOs d'entreprise qui gèrent le déploiement d'agents IA, la sécurité des apps tierces et la gouvernance des risques IA — clients notables : T-Mobile, Databricks, S&P Global, Snowflake | — | |
| 2 | Professionnels | Équipes | — | |
| 3 | Écrivains | Étudiants | — | |
| 4 | Étudiants | Professionnels | — |
A security tool for IT teams that answers a question most companies can't: which of the hundreds of apps and AI agents connected to our Google Workspace, Salesforce or Slack actually have access to what, and are any of them behaving suspiciously right now
