SyncMark

SyncMark is a web-based markdown collaboration tool for writing, editing, and versioning documents together in real time. It focuses on reducing Git-related workflow friction for teams that co-author specs, prompts, docs, and configuration files. The page also describes it as a place to collaborate and share markdown files with friends and colleagues.

Its core features center on simultaneous editing without conflicts, live cursors, built-in version history, and continuous auto-saving. Changes are tracked automatically, and previous document states can be restored in one click. SyncMark describes its content as pure, standard markdown, with no proprietary block format, and says that this format stays portable and works with AI agents. It also supports real-time collaboration on configuration files such as YAML and JSON, with syntax highlighting and validation as text is typed.

Sharing and workspace features include public read-only links, password protection, sharing entire folders, email invites, role-based access control, workspace isolation, live workspace chat, and @mentions. The product also supports bulk import of markdown files, export of workspace content, and preservation of folder structure. Under the hood, SyncMark says it uses Conflict-free Replicated Data Types and WebSockets to sync keystrokes peer-to-peer, with no central database locking the text. It also provides a REST API with OpenAPI documentation for syncing documentation, managing users, and feeding markdown to LLMs.

The product is presented for developers, technical teams, AI-native builders, and open-source maintainers. No pricing or licensing terms are stated on the page.