An h2o file extension is related to the Water a dynamic language. An h2o file stores web program.

There are 2 other file types using
the H2O file extension!

empty icon.h2o - H2O compressed archive

empty icon.h2o - H2OMAP Water master project

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H2O file extension - Water web program

What is h2o file? How to open h2o files?

File type specification:

Source code and script file type icon Source code and script file type

The h2o file extension is also used by Water, a dynamic language that unites the worlds of objects and Web Services in an elegant way. Water adheres to a "Learn Once, Use Everywhere" philosophy where data, logic, and presentation are manipulated and represented in a consistent way. Water is an All-Level Language because it can be used for both high-level and low-level tasks. Water was designed to support both object-oriented programming and functional programming.

Water uses an XML-based syntax called ConciseXML which is compatible with XML 1.0 and is as concise as popular programming languages. Water represents the first Pure Web Services environment where everything is a Web Service and has an XML representation. Water makes Web Services and XML live up to their promise.

The language specification is openly documented and a free runtime is available for commercial (and non-commercial) use. The Water runtime can be deployed in any or all tiers of a standard Java environment -- running as an applet, servlet, or stand-alone application. Water can be used for building high-performance multi-tier applications through the caching of both data and logic.

Water is particularly suited for building high-level languages including declarative, or modeling languages. Water has started to be used by independent software vendors (ISVs) to build custom languages for specific problem domains.

Water supports a flexible Object-Oriented security model called Capability Security. This is the same security model used in secure operating systems.

The design of Water was influenced by many other languages such as Scheme, Java, HTML, Lisp, Self, Smalltalk, Basic, ML, and Dylan. Water has the power of Lisp, and the ease of use of Basic.

This h2o file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .h2o file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

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