Documentator - We make documenting your product a piece of cake 📘
MacDown - MacDown is an open source Markdown editor for OS X, released under the MIT License.
Archbee.io - Archbee is a developer-focused product docs tool for your team. Build beautiful product documentation sites or internal wikis/knowledge bases to get your team and product knowledge in one place.
Frost - An open API for Blockchain timestamping
UnMarkDocs - Unleash the Power of Markdown to Write Better Product Documentation
Typora - A minimal Markdown reading & writing app.