Free 4.4 software for linux

BottomFeeder is a news aggregator client for RSS and Atom feeds, written in VisualWorks Smalltalk. BottomFeeder runs on x86 Linux (also FreeBSD), PowerPC linux, Sparc Linux, Windows (98/ME/NT/2000/XP), Mac OS8/9, Mac OS X, AIX, SGI Irix, Compaq UNIX, HP-UX, and Solaris.
Main features:
- Full support for CSS, including user defined CSS
- View news in 3 pane or 2 pane modes
- Subscribe to any RSS or Atom format in use
- View items in a summary Newspaper View
- Synchronize 2 or more BottomFeeders via HTTP or file import
- Subscribe to feeds or feedlists
- Supports HTTPS, HTTP Authentication, and HTTP Digest Authentication
- Plugins for blogging, IRC, and MSN Messenger contacts
- Easy to update or upgrade from within BottomFeeder
- Save as many or as few feed items for as long as you want
- Import or Export in common OPML format
- Binary compatible on every platform. No need to recompile
Enhancements:
- The Feedlists folder has been eliminated.
- Importing a feedlist now adds feeds directly to your subscription list.
- The separate "Searches" folder has been eliminated.
- Search feeds are now part of your subscription list, and are marked with a new icon.
- Tabs now open empty and remember their previous state.
- There are many other changes and enhancements.

PHP is a widely-used Open Source general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.

PHP runs on many different platforms and can be used as a standalone executable or as a module under a variety of Web servers. It has excellent support for databases, XML, LDAP, IMAP, Java, various Internet protocols, and general data manipulation, and is extensible via its powerful API.

It is actively developed and supported by a talented and energetic international team. Numerous Open Source and commercial PHP-based application packages are available.

Dasher is a zooming predictive text entry system, designed for situations where keyboard input is impractical (for instance, accessibility or PDAs).
Dasher is usable with highly limited amounts of physical input while still allowing high rates of text entry.
Dasher is Free software released under the GPL. Further documentation may be found in the Doc/ subdirectory.
Enhancements:
- Various minor bugfixes

FIDOGATE is a Fido-Internet gateway and a Fido tosser.
Main features:
- Fido Internet Gateway
- Fido Zone Gateway (NetMail zone gate)
- Fido Tosser (mail processor)
- Fido Ticker (file processor)
- Fido Areafix and Filefix

JClaim is an instant message client, tools, and development framework. JClaim supports AIM, Yahoo!, MSN, ICQ, Jabber, and SMS.

The framework can be used for designing your own tools. The UI includes spell checking and a lot more. A Web interface is included for remote access.

Glan is a toolkit for developing network GUI applications. It consists of a remote Qt toolkit, a network (client-server) wrapper for Qt classes, and a Qt-based Application Server development platform for creating GUI oriented client-server applications.

Glan allows the developer to just write code using the Qt programming style for the server side and forget about the client side.

RXP is a validating XML parser written in C. RXP project is used by the LT XML toolkit, and the Festival speech synthesis system.

The current version of RXP supports XML 1.1, Namespaces 1.1, xml:id, and XML Catalogs. To use an XML Catalog, set the environment variable XML_CATALOG_FILES to a space-separated list of catalog files.

You can try using RXP to check an XML file.