.idx
| File Type 1 |
 Index File |
| File Format |
Standard |
| Usage |
Referenced by an application; not meant to be opened manually |
| Popularity |
★ ★ ★ ☆ ☆ Average |
| Description |
Stores an index of files used by various programs; used by search functions to speed up searches; once a hard disk, directory of files, or database is indexed, the data can be searched and sorted more efficiently.
Used by Microsoft FoxPro, Corel QuickFinder, ESRI ArcView, ICQ, and other programs.
|
| Open With |
| Windows |
 ESRI ArcGIS for Desktop
 ICQ
 Intuit Quicken for Windows
|
| macOS |
 Intuit Quicken for Mac
|
|
| Updated |
2007 |
| File Type 2 |
Navigation POI File |
| File Format |
Proprietary (VDO Dayton) |
| Usage |
Referenced by an application; not meant to be opened manually |
| Popularity |
★ ★ ★ ☆ ☆ Average |
| Description |
Contains points of interest (POI) for a VDO Dayton GPS portable navigation device (PND); includes a header and a set of POIs; each POI consists of a 3 byte index, then 8 bytes for the coordinates and 46 bytes for name and type.
IDX files can be transferred to VDO Dayton PNDs via USB.
|
| Open With |
| Windows |
 Transfer to a VDO Dayton device
|
|
| Updated |
2007 |
| File Type 3 |
Outlook Express Mailbox Index File |
| Popularity |
★ ★ ★ ☆ ☆ Average |
| Description |
Stores an index of mail messages stored in an Outlook Express mailbox (.MBX file); should be located in the same folder as the mailbox files; required for importing old Outlook Express mailboxes into Outlook Express 5 or later.
|
| Open With |
| Windows |
 Microsoft Outlook Express
|
|
| Updated |
2007 |
| File Type 4 |
HMI Historical Log Index File |
| Popularity |
★ ★ ★ ☆ ☆ Average |
| Description |
Index for log files created by InTouch Human-Machine Interface (HMI) software or ReportBuilder with ODBC Connector pack for InTouch; used for running reports from collected data
|
| Open With |
| Windows |
Wonderware InTouch
WorkSmart Automation ReportBuilder
|
|
| Updated |
2007 |
|
