An XML parser and serialisartion library written in pure OCaml. Values can be converted to and from channels or strings, and combinators exist to query the XML values.
ezxmlm -- combinators for parsing and selection of XML structures
An "easy" interface on top of the Xmlm  library. This version provides more convenient (but far less flexible) input and output functions that go to and from [string] values. This avoids the need to write signal code, which is useful for quick scripts that manipulate XML.
More advanced users should go straight to the Xmlm library and use it directly, rather than be saddled with the Ezxmlm interface. Since the types in this library are more specific than Xmlm, it should interoperate just fine with it if you decide to switch over.
Online docs: https://mirage.github.io/ezxmlm
Source Code: https://github.com/mirage/ezxmlm
Discussion: https://discuss.ocaml.org in the Ecosystem category
In the toplevel, here's an example of how some XHTML can be selected out quickly using the Ezxmlm combinators. Note that this particular HTML has been post-processed into valid XML using
xmllint --html --xmlout.
# #require "ezxmlm" ;; # open Ezxmlm ;; # let (_,xml) = from_channel (open_in "html/variants.html") ;; # member "html" xml |> member "head" |> member_with_attr "meta" ;; - : Xmlm.attribute list * nodes = ([(("", "name"), "generator"); (("", "content"), "DocBook XSL Stylesheets V1.78.1")], ) # member "html" xml |> member "head" |> member "title" |> data_to_string;; - : string = "Chapter 6. Variants"
Ez peezy lemon squeezy!