Celtx vs Zettlr

Celtx is cloud-based software for writing, planning and managing media-production projects, including film, television, commercials, documentaries and interactive media. Script editors cover film and television screenplays, stageplays, multi-column audiovisual scripts and game scripts. Story development includes Beat Sheet, Storyboard and Script Goals & Insights; production planning tools cover breakdowns, catalogs, shot lists, scheduling, cast and crew, sides, budgets, call sheets and reports. Users can collaborate in real time with comments, presence awareness, permissions and shareable read-only links. Script revisions, feedback and approvals have a history. The cloud product runs in a browser, while Celtx Screenplay is listed for Windows computers and Android devices; mobile browsers include iPhone Safari support. The free plan allows one project, and the Writer plan supports up to three. Paid Writer billing is $11.24 a month when billed yearly, and a seven-day trial is listed. The maker is based in St. John's, Newfoundland and Labrador, Canada, and was founded in 2000.

Zettlr is a writing workbench for projects that can run from early notes through journal submissions and book manuscripts. It began as a Markdown editor for academic researchers and is also used by students, journalists, authors, and others writing substantial amounts. The app works offline on Windows, macOS, and Linux, and files stay on the user's computer. It supports standard Markdown and exports to formats supported by Pandoc. Citation manager support includes Zotero, JabRef, and Juris-M, with more than 9,000 citation styles. Note features include IDs, wiki-style internal links, related files, navigation, and graph view. Pandoc-powered profiles can apply templates to papers or prepare presentations for Beamer, reveal.js, or PowerPoint. Zettlr also renders LaTeX equations and Mermaid charts and supports extensive settings and custom CSS. It is free and open source, with no payment required to download. The maker says app data is not collected and update checks can be disabled. Older releases are unsupported; nightly releases may contain many bugs.