There are 6 databases that start with "I"

1. IEEE/IET Electronic Library (IEL)

IEEE IEL contains full-text for all IEEE and IET journals, magazines, conference proceedings and standards back to 1988 plus All Societies Periodicals Package (ASPP) back to 1998. ... (more info)

2. Index Islamicus

produced by Brill Academic Publishers, is an international bibliography of publications in European languages on all aspects of Islam and the Muslim world. ... (more info)

3. International Index to Black Periodicals Full Text

IIBP Full Text includes current and retrospective bibliographic citations and abstracts from over 150 scholarly and popular journals, newspapers and n... (more info)

4. International Index to the Performing Arts Full Text

IIPA covers nearly all aspects of the world of performing arts. Subjects include dance, film, drama, television, the arts and entertainment industry, stagecraft, magic, musical theatre and performance... (more info)

5. International Medieval Bibliography

All subjects relating to the Middle Ages are included, within the date range 300-1500 AD. Geographical areas covered are Europe, the Middle East and North Africa... (more info)

6. InvestiGator

... (more info)