HavenOPML

HavenOPML reads and writes OPML 1.0 and 2.0 documents in pure Swift. It has no outside dependencies and uses an actor-isolated service for safe concurrent access.

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Features

Import and export

Reads OPML files into structured outlines and writes them back as valid XML.

Both formats

Supports OPML 1.0 and 2.0.

Outline traversal

Includes depth-first traversal helpers for walking nested outlines.

Security

Prevents XXE attacks, caps input at 10 megabytes, and limits nesting to 128 levels.

Platforms

iOS 18+, macOS 15+, tvOS 18+, watchOS 11+, visionOS 2+

Licence

BSD 3-Clause