PL files: what are they and how do I open them?
Are you facing difficulties opening unknown files on your computer, or wondering exactly what this file is?
We've got the information and best software solutions for opening these files effortlessly.
.pl file type #1: Perl source file
Source codes or scripts written in the Perl script programming language can be found in files with pl extension.
Further details:
pl files are script written in Perl programming language. It contains lines of program code with instructions for performing various tasks.
Perl is often used for web development, network programming, system administration, and other software applications. The .pl file can be executed using a Perl interpreter.
Open file with:
Perl
A highly capable, feature-rich programming language
.pl file type #2: BRL-CAD 2D and 3D plot file
Files with pl extension are used by the BRL-CAD software. They contain some graphics plots.
Further details:
The pl file extension is associated with the BRL-CAD solid geometry modeling package developed by the U.S. Army Research Laboratory.
The package includes a large collection of tools and utilities including an interactive geometry editor, raytracing and generic framebuffer libraries, a network-distributed image-processing and signal-processing capability, and an embedded scripting language.
The .pl file stores 2D, or 3D plots.
Open file with:
BRL-CAD
A CAD modeling tool
.pl file type #3: Fractal Zplot palette
A pl fil extension is related to the Fractal Zplot software. A pl file stores palette.
Further details:
The pl file extension is related to Fractal Zplot, an interactive program for Microsoft Windows that allows users to generate fractal images.
The pl file stores settings for color palette.
Open file with:
Fractal Zplot
A fractal image generator
.pl file type #4: Harvard palette
A pl file extension is related to the Harvard Graphics ChartXL and used for its palette graphics.
Further details:
The pl file extension is associated with applications developed by Harvard Graphics, like Harvard Graphics ChartXL, Harvard Graphics 98, Pro Presentations etc.
The pl file stores settings for graphics palette.
Harvard Graphics was acquired by Serif.
Open file with:
Harvard Graphics ChartXL
A data analysing tool
.pl file type #5: Interleaf printerleaf (or WorldView) format file
Files with pl extension are used for Interleaf applications. It is a document file format.
Further details:
The pl file extension is associated with applications developed by Interleaf, Inc. The .pl file stores document in electronic form.
Interleaf, Inc. provides software and services to allow organizations to build, integrate and manage document systems. Interleaf software covers the full range of document processes: accessing information, developing text and graphic documents, putting them through their review and revision processes, distributing them electronically or on paper, and managing the entire process.
Interleaf, Inc. was acquired by Broadvision in 2000.
We are sorry, there is currently no specific software link to open this kind of file.
.pl file type #6: PROLOG language source code file
Files with pl extension are used for the PROLOG programming language.
Further details:
The pl file extension is associated with the PROLOG programming language. The .pl file stores Prolog source code.
Prolog is a logic programming language. It is a general purpose language often associated with artificial intelligence and computational linguistics. It has a purely logical subset, called "pure Prolog", as well as a number of extralogical features.
Having its roots in formal logic, and unlike many other programming languages, Prolog is declarative: The program logic is expressed in terms of relations, and execution is triggered by running queries over these relations. Relations and queries are constructed using Prolog's single data type, the term. Relations are defined by clauses. Given a query, the Prolog engine attempts to find a resolution refutation of the negated query. If the negated query can be refuted, i.e., an instantiation for all free variables is found that makes the union of clauses and the singleton set consisting of the negated query false, it follows that the original query, with the found instantiation applied, is a logical consequence of the program. This makes Prolog (and other logic programming languages) particularly useful for database, symbolic mathematics, and language parsing applications. Because Prolog allows impure predicates, checking the truth value of certain special predicates may have some deliberate side effect, such as printing a value to the screen. This permits the programmer to use some amount of conventional imperative programming when the logical paradigm is inconvenient.
The language was first conceived by a group around Alain Colmerauer in Marseille, France, in the early 1970s, while the first compiler was written by David H. D. Warren in Edinburgh, Scotland. Prolog was one of the first logic programming languages, and remains among the most popular such languages today, with many free and commercial implementations available. While initially aimed at natural language processing, the language has since then stretched far into other areas like theorem proving, expert systems, games, automated answering systems, ontologies and sophisticated control systems, and modern Prolog environments support the creation of graphical user interfaces, as well as administrative and networked applications.
Open file with:
GNU Prolog
A free Prolog compiler