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Red Hat Enterprise 4.0
Red Hat Enterprise Linux is the next generation enterprise linux operating system. more>>
Red Hat Enterprise Linux supports a wide range hardware and software applications, and is the worlds leading enterprise-focused Linux environment.
The following section outlines a few of the major new features in Red Hat Enterprise Linux v.4:
Linux 2.6 kernel infrastructure
Red Hat Enterprise Linux v.4 provides the most stable and robust commercial product based on the Linux communitys 2.6.9 kernel. Open source projects such as Fedora provided an environment for the Linux 2.6 kernel to mature significantly during 2004.
As a result, the Red Hat Enterprise Linux v.4 kernel offers numerous improvements over earlier kernels, including many enhanced algorithms and features:
- Generic logical CPU scheduler: Handles multi-core and hyperthreaded CPUs.
- Object-based Reverse Mapping VM: Improved performance in memory constrained systems.
- Read Copy Update: SMP algorithm optimization for operating system data structures.
- Multiple I/O schedulers: Selectable based on the application environment.
- Enhanced SMP & NUMA support: Improved performance and scalability for large servers.
- Network interrupt mitigation (NAPI): Improved performance for heavy network loads.
Improved storage and file system capabilities
Numerous enhancements have been incorporated into Red Hat Enterprise Linux v.4 that improve the scalability and performance of the data storage subsystems, including:
- Ext3 performance: Block Reservations and Hash Tree Directories improve the performance of read/write I/O and directory scanning operations.
- Ext3 scalability: Dynamic file system expansion and file system sizes up to 8TB are now supported.
- Logical Volume Management: A comprehensive update to the LVM provides new features such as read/write snapshots and transactional metadata updates, along with a flexible new management GUI. Mirroring and enhanced multipathing are scheduled for delivery by mid 2005.
- Scalability: Enhanced storage LUN management makes it possible to configure much larger storage subsystems.
- Automounting: The inclusion of AutoFSv4 provides sophisticated device access control, supporting features such as browsable mounts and replicated servers.
- Cost reduction: Support for Serial ATA disk storage provides increased performance, higher densities, and reduced cost per megabyte over traditional IDE devices.
New security capabilities
Provision of sophisticated security capabilities has been a specific development focus of the Red Hat Enterprise Linux v.4 release. New features:
- Mandatory Access Control: Security Enhanced Linux (SELinux) provides a MAC infrastructure that complements the existing Discretionary Access Control security features provided by the standard Linux environment. In a MAC-based environment, application capabilities and privileges are set by predefined policies and enforced by the kernel. This prevents errant applications from compromising system security.
- Memory management enhancements: Several features, including Exec Shield and Position Independent Executables, combine to prevent applications from being exploited by attacks such as buffer overflows.
- Compile and runtime consistency checking: New buffer validation techniques in the GCC compiler and Glibc library greatly reduce the risk of faulty applications being compromised.
Improved desktop capabilities
Significant emphasis has been placed on providing a feature-rich, easy-to-use, desktop environment for all Red Hat Enterprise Linux family members (including Red Hat Desktop). A brief summary of new features:
- Personal productivity: Advanced user capabilities are provided by the OpenOffice.org productivity suite, the Firefox web browser and Evolution email client
- Plug-and-play device support: Easy handling of devices such as USB disks and digital cameras (as well as photo management applications such as gThumb)
- Multimedia: Applications for audio, video, and streaming content such as RhythmBox, HelixPlayer, Totem, and SoundJuicer
- User environment: GNOME 2.8 provides numerous enhancements for a more consistent graphical look and feel. Comprehensive management tools (e.g. printer and network management and VNC-based application session sharing) and utilities (e.g. Gaim instant messaging, and GIMP image processing) combine to provide a complete and highly functional user experience.
- Interoperability: Technologies that allow user login authentication with Microsoft Active Directory, NTLM authentication for web-based applications, Evolution mail client access to Windows Exchange Servers
- IIIMF: The Internet/Intranet Input Method framework provides the next-generation multilingual Unicode input method framework. It offers many features, such as full Unicode support and the ability to run multiple concurrent language engines.
Miscellaneous features
As a major new release, almost every aspect of Red Hat Enterprise Linux has been enhanced. Some of the more important improvements:
- Compatibility with prior releases: Red Hat Enterprise Linux v.4 includes compatibility libraries that enable most v.3 and v.2.1 applications to continue to run without modification.
- Languages: Focused on international standards, such as OpenI18N and GB18030, Red Hat Enterprise Linux has documentation and software available in 15 languages: English, Japanese, German, Brazilian Portuguese, Korean, Italian, French, Simplified Chinese, Traditional Chinese, Spanish, Devnagari, Bangla, Punjabi, Tamil, Gujarati.
- Auditing: In an update planned for mid-2005, a new auditing facility will be available that provides an open, bidirectional socket interface that can be used by auditing applications. It provides comprehensive auditing capabilities for SELinux and standard Linux events.
- File serving: Provision of NFSv4 provides features such improved security, operation coalescing and integrated file locking, while Samba provides easy access to Microsoft Windows printers and file shares.
- Software development: The latest GCC 3.4 compiler toolchain, and a technology preview of the forthcoming GCC 4.0 toolchain, are provided. These offer standards-compliant C/C++ and Fortran 95 development environments.
- Advanced configuration and power interface: Support for the ACPI standard enables a wide range of power management capabilities (battery monitoring, automated power down, suspend), and provides a foundation for increasingly sophisticated features in the future.
- Extras: Optional software is provided on the Red Hat Enterprise Linux Extras CD and Red Hat Network channel. This includes features such as additional desktop applications (e.g. Adobe Reader, Macromedia Flash), Java environments, and printroom-quality Agfa/Monotype fonts.
Main features:
Server features summary
- Databases - Leading open source databases: PostgreSQL, MySQL
- Development - Environments for C, C++, Java, Fortran with Perl, Python, CVS and Emacs
- Engineering - Computational tools including blas, pvm, and lam
- File servers - FTP, NFS, and Samba (CIFS)
- Mail server - IMAP/POP servers with Cyrus, Sendmail, spamassassin
- Networking - Complete suite of network servers and firewall
- Printing - CUPS/lpr printing systems
- Security - Extensive features including SSL, IpSec, MAC/DAC
- Web server - Apache server with numerous mod/php plugins
Client features summary
- Document preparation - OpenOffice.org office suite 1
- Extensive Microsoft interoperability
- Laptop power management - APM/ACPI
- Mail - several clients including Evolution
- Multimedia support - applications for multiple audio/video formats
- Plug-and-play device support
- RDP terminal services
- Remote desktop sharing/collaboration
- User interface - GNOME-based with optional KDE
- Web browsing - Firefox
- Wireless support
- X Windows system
PDFTextStream 2.1
PDFTextStream project is a PDF text and metadata extraction library available for Java, Python, and .NET. more>>
It supports all versions of the PDF document specification, (including v1.6, used by Acrobat 7), extraction of text encoded using double-byte character sets (including Chinese, Japanese, and Korean), decryption of 40-bit and 128-bit encrypted documents, and extraction of all document metadata provided by PDF documents (including form data, bookmarks, and annotations).
Easy integration with Jakarta Lucene is included.
Advanced SCORM Editor 1.01
DeltaLearn Advanced Editor is an e-learning content generation tool based on the SCORM standard. more>>
It is a comprehensive integrated SCORM manifest editing environment with a powerful graphical editor for generating SCORM metadata that improves productivity and dramatically decreases authoring time by replacing the traditional error-prone, time-consuming, manual XML manifest editing.
Advanced SCORM Editor comes with a comprehensive set of features and capabilities: a fast, powerful, standards-based, user-friendly SCORM manifest editor that enables you to easily create complex SCORM content that can operate with any compliant LMS.
Main features:
- SCORM 1.2 and 1.3 conformant
Reads SCORM 1.2 and 1.3 contents. Generates manifests using SCORM 1.3 standard. All contents can be interpreted by any compliant LMS server.
- Content Generation Wizard
Easy-to-use content generation wizard that creates SCORM compliant manifests. Includes wizards to create lessons and tests with multiple resources:
- Lesson Wizard: Allows defining a lesson title and its contents.
- Test Wizard: Allows creating multiple-choice tests with one or more possible answers, as well as fill-the-blanks questions.
- Sequencing Rules: Supports no sequencing, forward-only and lineal sequencing.
- Manifest Tree view
All manifests are presented as a tree, allowing the user to visually define advanced SCORM content and easily adding, editing and deleting elements. Supports copying, pasting and deleting elements. All actions such as moving, deleting, editing elements or changing properties can be undone or redone. Includes drag-and-drop support for moving or copying manifest elements. Relative base and href tag handling.
- Property View
Allows the user to quickly display and update properties of each element. A helpful in-line help explaining the property is displayed when selecting elements.
- Problem View
Displays a detailed list of errors detected on the manifest and proposes solutions to them.
- Content analyzer with on-screen error reporting
Provides an extensive array of sophisticated analytical tools to diagnose manifest problems in real time by graphically displaying all detected syntax or design errors in an intuitive user interface, enabling quick response to issues that need attention and proposing possible solutions to detected issues.
- Resource Viewer
Allows to display resources within the manifest using a built-in viewer. Includes syntax highlighting for JS and XML files.
- Automatic Bundle Generation
Upon user request, generates a ZIP file containing the manifest and all external resources. All generated bundles are fully compliant with SCORM LMS servers.
- SCORM 1.2 to 1.3 migration
Supports migrating SCORM version 1.2 manifests to SCORM 1.3 in two easy steps.
Version restrictions:
- 30 days Trail
PDFlib TET 2.2
PDFlib TET (Text Extraction Toolkit) is software for reliably extracting text information from any PDF file. more>>
In addition to low-level text retrieval TET contains advanced content analysis algorithms for determining word boundaries, removing redundant duplicate text (such as shadows and artificial bold). Using the auxiliary pCOS interface you can retrieve arbitrary objects from the PDF, such as metadata, hypertext, etc.
Fully functional evaluation versions of TET including documentation and samples are available from the TET download page for all supported platforms. Purchasing a license and applying the license key will fully enable the evaluation version for production deployment.
With PDFlib TET you can:
- extract text from PDF, e.g. to store it in a database
- implement a search engine for processing PDF
- convert the text content of PDF pages to XML for processing with other tools
- process PDFs based on their contents
Supported PDF Input
PDFlib TET supports all relevant flavors of PDF input:
- all PDF versions up to PDF 1.7 (Acrobat 8)
- all font and encoding types: base 14 fonts, TrueType, PostScript, OpenType, CID fonts
- encrypted PDF with 40- and 128-bit encryption (appropriate permission settings or password required)
Unicode
Although text in PDF is usually not encoded in Unicode, PDFlib TET will normalize the text from a PDF document to Unicode:
- TET converts all text contents to Unicode. In C the text will be returned in the UTF-8 or UTF-16 formats, and as native Unicode strings in all other language bindings.
- Ligatures and other multi-character glyphs will be decomposed into a sequence of their constituent Unicode characters.
- Vendor-specific Unicode assignments (Private Use Area, PUA) are identified, and mapped to characters in the common Unicode area if possible.
- Glyphs without appropriate Unicode mappings are identified as such, and are mapped to a configurable replacement character.
Full CJK Support
TET includes full support for extracting Chinese, Japanese, and Korean text. All predefined CJK CMaps (encodings) are recognized; horizontal and vertical writing modes are supported.
Content Analysis and Word Identification
TET can be used to retrieve low-level glyph information, but also includes advanced algorithms for content analysis:
- Detect word boundaries to retrieve words instead of characters.
- Recombine the parts of hyphenated words.
- Remove duplicate instances of text, e.g. shadow and artificial bold text.
- Recombine paragraphs into reading order.
- Reorder text which is scattered over the page.
- Reconstruct lines of text.
Geometry
TET provides precise metrics for the text, such as the position on the page, glyph widths, text direction. Specific areas on the page can be excluded or included in the text extraction, e.g. to ignore headers and footers or margins.
Version restrictions:
- Unlicensed versions support all features, but will only process PDF documents with up to 10 pages and 1 MB size. Evaluation versions of TET must not be used for production purposes, but only for evaluating the product. Using TET for production purposes requires a valid TET license.
Enhancements:
- repair mode for damaged PDF repairs damaged documents which were rejected by earlier versions of TET
- support for PDF 1.7, the file format of Acrobat 8
- support for AES-encrypted PDF (appropriate password required)
- TET command-line tool: extract the text based on article threads in the document
- updated pCOS interface (the same pCOS as in PDFlib 7)
- Perl language binding
- many new heuristics and workarounds
- Unicode mappings for more documents
- improvements in the Wordfinder
- various bug fixes
- TET Plugin for Acrobat as a free tool and TET technology demo
GuaPDF for Linux 2.3
Remove restrictions and open password on any PDF document. more>> The primary goal of GuaPDF is to
remove restrictions on any PDF document (you should have the right to do it, for example, if you forgot the password). Any Acrobat version up to 8 is supported, even with 128-bit AES or RC4 encryption. PDF permission password removal is an instant process. Decrypted file can be opened in any PDF viewer without any restrictions so you may edit/copy/print it.
GuaPDF can be also used for
remove the PDF open password. Decryption of the file with password for opening is guaranteed for PDF files with 40-bit key only (Acrobat 3, 4 compatible encryption). This process takes several days on one home computer.
Only standard PDF security is supported, neither third-party plug-ins nor e-books.
Features
GuaPDF is the unique software with full support of Acrobat 7, 8 files (including compressed files and AES encryption).
Advantages of GuaPDF are:
Guarantee of decryption
Newest PDF 1.7 (Acrobat 8.x) files support, including AES encryption, compressed files and unencrypted metadata
Very high speed (optimized for Pentium II/III, Pentium 4, Core 2 and AMD architecture)
Confidentiality (you crack your secret files, not someone from cracking service)
Versions for single processor, dual/dual-core processor and network version to use power of distributed clients
Portability (DOS, Windows, Linux, Solaris, Mac OS versions are available)
Running in GUI and keeps running in batch mode (as command-line utility)<<less
Big Faceless Java PDF Viewer 2.11.6
A Swing component that can display PDF documents more>>
Big Faceless Java PDF Viewer is Intended for customers who dont require the full API, the PDF Viewer can be installed as an Applet, application or via Java Web Start, or embedded in a Swing application.
Printing, saving, text search, forms, digital signatures, and annotations are some of the many features available - the viewer can be tailored to include just the features you need, and is a cost-effective solution for those needing the features of Adobe Acrobat on a Java platform.
Essentially a cut-down version of the full PDF Library, the Java PDF Viewer is a more cost-effective solution for those who dont required API access to the main library.
Unlike its big brother, the viewer cannot create new PDFs and any edits must be made through the Swing interface. That interface is supplied with a large number of "features" (the full list is here) which can be enabled to customize the interface; ideal for distributing a limited functionality viewer as part of the
Major Features:
- Swing component for displaying PDF documents
- Customizable feature set includes printing, saving, search/selection, forms, bookmarks, reorderable thumbnails, annotations and more.
- Full support for PDFs up to Acrobat 9
- Viewer can be controlled from JavaScript
- Applet size under 1MB
- Localized in English, French, Spanish, German, Japanese and Chinese
Enhancements:
- All BFO warning (and debug, if enabled) messages are now logged using log4j if available, or java.util.logging.* if not.
- Large synchronization audit fixed some issues when reading from one PDF in multiple threads, particularly when using the viewer.
- Fixed problem that could result in corruption when repeatedly saving a PDF containing compressed XRef tables and multiple revisions.
- Modified AnnotationStamp so Acrobat correctly handles custom stamps, and added some new types of standard stamp.
- Added FDF.getXFDF() method, for exporting XFDF from a PDF, and added support for this to the Viewer. Fixed FDF export, broken some releases ago.
- More PDF/A related fixes, and added a number of new OutputProfile.Features.
- Fixed RichText content in text fields
- Added subsetting for CFF fonts
- Fixed error with some Windows JDKs when rasterizing JPEG images
- Fixed unusual cases of Linear & Radial shading, added preliminary support for Coons & Tensor-Product Patch shading (Type 6 & 7).
- Fixed blending, broken in previous release and resulting in opaque highlight annotations.
- Correctly handle masked images where the mask and image are different sizes, as created by Luratech products.
- Added PageExtractor.Image.getUniqueId(), to identify extracted images.
- Added PageExtractor.Image.getMetaData() and Text.getFontMetaData(), to return any embedded XMP MetaData for those items in the PDF.
- Fixed long-standing bug in CCITT.G3 2D encoding now rarely seen in very old TIFF images.
- Further fixes to handle some types of corrupt PDF
- Viewer: Page Up/Page Down/Home and End keys navigate correctly through the PDF via the Viewport ActionMap. Standard ScrollBar keybindings are overridden, previous KeyListener approach didnt work reliably and was removed.
- Viewer: Fixed missing glyphs in some fonts after a search was run.
- Viewer: PDFTool (the class run by "java -jar bfopdf.jar") has more options.
- Viewer: Stamps no longer slowly grow when clicked on due to rounding error
- Viewer: Calling DocumentPanel.redraw(page) will work as expected.
- Viewer: Dont allow JavaScript to be run on the console if no PDF is loaded
- Viewer: Fixed page jump when zoom level is changed in Column view
- Viewer: Dont fail under 1.6 when saving PDFs to filenames containing an invalid regex backreference.
- Viewer: Improved display under OS X, including addition of a Dock Icon.
- Viewer: Added keyboard shortcuts to "Open Recent" menu.
- Viewer: Thumbnail panel now scrolls to follow the current page, and renders more reliably.
Requirements: Java 2 Standard Edition Runtime Environment
PDFlib pCOS 1.0
PDFlib pCOS (PDF Information Retrieval Tool ) lets you retrieve PDF metadata, hypertext, or any other information. more>> <<less
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