Приведу несколько ссылок на ресурсы, где можно получить бесплатные электронные книги на любой программистский вкус.

1. The Acceptance Test Engineering Guide
2. Application Architechture Guidance 2.0 Knowledge Base
3. Common Service Locator
4. Composite Application Guidance for WPF
5. Design for Operations
6. Enterprise Library
7. ESB Guidance
8. GAX Extensions Library
9. Guidance Explorer
10. Performance Testing Guidance for Web Applications
11. Performance Testing Guidance Project
12. SharePoint Development Guidance
13. Smart Client Guidance
14. Team Development with Visual Studio Team Foundation Server
15. Unity Application Block
16. VSTS Guidance Project
17. WCF Security Guidance
18. Web Client Software Factory
19. Web Service Software Factory

Официальная страница Patterns & Practices

E-Book Directory

Адрес: http://www.e-booksdirectory.com/

Книги по Ada, Assembly, Basic, C, C#, C++, CGI, JavaScript, Perl, Delphi, Pascal, Haskell, Java, Lisp, PHP, Prolog, Python, Ruby.

Кроме того есть книги по другим направлениям (перечислены наиболее близкие по тематике):

• Free Mathematics Books
• Free Engineering Books
• Free Physics Books

Коллекция бесплатных книг от O'Reilly (в основном Unix-related): http://oreilly.com/openbook/

Распространяются по лицензии Creative Commons.

Большое количество е-книг: http://appsapps.com/ebooks/

Категории: .NET, 3D, Ada, ADO.net, Agile, Algorithms, Animation, Apache Ant, Apple, Artificial Intelligence, ASP, ASP.net, Assembly, Awk, Borland, C, C#, C++, C++ Builder, CGI, CodeGear, Compilers, CORBA, Cross Platform, Cryptography, CSS, Data Structures, Databases, Debugging, Delphi, ECO, eCos, Embedded Systems, For Children, Game Programming, General, Greasemonkey, GUI Design, HTML, Java, Javascript, JSP, Linux, Lisp, Mac, MATLAB, Microcontrollers, MIRC Scripting, Miscellaneous, Modeling, Mozilla, MS-DOS/Batch, MySQL, Nanotechnology, Natural Language Processing, Neural Networks, Object Pascal, Objective-C, OOP, Open Source, Pascal, PBD, Perl, PHP, Probability, Prolog, Python, QBasic, QT, RDF, Samba, Scheme, Smalltalk, SQL, Squeak, SVN, UNIX, VB.net, Version Control, Virtual Reality, Web Desig, Web Programming, XML, XML Schema, XSLT, XUL.

Адрес: http://www.spmn.com/products_guidebooks.html

Доступны следующие книги:

• Program Managers Guide to Software Acquisition
• Little Yellow Book of Software Management Questions
• Project AnalyzerProject Analyzer
• The Condensed Guide To Software Acquisition Best Practices
• Little Book of Configuration ManagementLittle Book of Configuration Management
• The Little Book of Bad ExcusesThe Little Book of Bad Excuses
• Little Book of Testing, Vol. I, Overview & Best Practices
• The Little Book of Testing, Vol. II, Implementation

Адрес: http://www.onlinecomputerbooks.com/

Большое количество е-книг на тематику: NET, C#, VB.NET, ASP.NET, MSOffice, SQL, AJAX, Java, J2EE, XML, C++, C, WebDesign, PHP, Python, Perl, Windows, Linux, Unix, Networking, MySQL, PostGreSQL, JavaScript, Security, Project Management, Ruby, SmallTalk, LISP.

Адрес: http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/

Материалы курсов лекций от MIT (Massachusetts Institute of Technology).

Другие книги

• Бесплатные книги от Bruce Eckel
• Computer Books
• SQL Server Books
• Business Software Books
• Java Books
• Cad-Cam Books

Ну и завершении посоветую наш скромный блог, куда мы публикуем рецензии на книги, а также выкладывает актуальные бесплатные книги на ИТ тематику.