Recommended
From the VS Code Marketplace
One click, and new versions arrive by themselves.
Or in VS Code: open Extensions (Ctrl+Shift+X, on macOS ⇧⌘X), search Visual DITA and choose Install.
Install
Free for standard DITA, with no account. It runs inside VS Code 1.106 or newer, on Windows, macOS and Linux — no Java, no XML extension.
Open a DITA topic or map in VS Code: it opens as a page in Visual DITA. Open Source shows the XML whenever you want it. The getting started guide takes ten minutes.
Licence
Every feature, on the OASIS document types of DITA 1.0 to 1.3 and the 2.0 draft. Any number of computers, any use, commercial authoring included. No trial period, no account. Renewed free every year.
Your own document types come as a Visual DITA package in your organization's name, which we prepare from your DTDs. Until then, those documents still open: the standard content on the page, your own elements kept as tags.
Installing Visual DITA means accepting its end user licence agreement. Open-source components keep their own licences, listed in the third-party notices.
Every year
The standard DITA in Visual DITA works until 31 December: hover Standard DITA in the DITA Document Types view to see the date. Each year's renewal comes from October.
Installed from the VS Code Marketplace or Open VSX, there is nothing to do: the update that carries the renewal arrives by itself.
For a .vsix install, or a computer that does not update: five files, one per DITA version.
From 1 November Visual DITA reminds you. If the date passes without a renewal, a DITA file opens on a message instead of the page, with the download and Open Source. Your files are unchanged: editing them as XML, and using them with any other tool, is never restricted.
About installing on your company's computers, your document types, a licence, or anything else. An email reaches a person, and we answer.