Files with RL1 extension could also be in the past found as old databases from RL-1  Data Bese program.

There is one other file type using
the RL1 file extension!

empty icon.rl1 - Descent 1 registered level file

Detailed description

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RL1 file - RL-1 Data Base database file

What is rl1 file? How to open rl1 files?

File type specification:

Database file type icon Database file type

The RL1 file extension was also in the past used for a RL-1 database format. This was a DOS-based full relational data base file format for a data base called RL-1 Data Base . They were originally (early 1980's) called ABW Corporation based in Ann Arbor Michigan.

The final issue under ABW's name was Version 1.32 in 1984.

The company was bought out by Dun & Bradstreet and the product was renamed (DunsPlus 2A) re-marketed and supported by D & B Computing Services from Wilton CT in 1986.

Under D & B the llast release I received was 1.53 in 1985.

In 1986 D & B changed their support policies to a per diem rate of $600/day for all support, and I lost contact with them at that time.

The product was very similar in function to the IBM System /38 database and the file modules were accessible from Cobol, Basic and I think PL-1 programs on the PC.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .rl1 file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

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