Pakistan Research Repository 

includes MPhil and PhD thesis produced in Pakistan, often available in full-text.

DSpace

 is a digital service that collects, preserves, and distributes digital material. Repositories are important tools for preserving an organization's legacy; they facilitate digital preservation and scholarly communication. CUILahore Library collects, preserve and distribute the intellectual assests of COMSATS students.

ProQuest

 Over the last 80 years, ProQuest has built the world’s most comprehensive and renowned dissertations program.

MIT Thesis

 Contains more than 30,000 thesis completed at MIT dating as far back as the mid 1800's.

Columbia University

 Provides the full text of open access dissertations and theses free of charge.You can quickly and easily locate dissertations and theses relevant to your discipline