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Are you a tech enthusiast trying to look into the evolution of coding? Curious about What are the 10 dead languages? COBOL, ALGOL, PL/I, APL, SIMULA 67, PASCOL, CLU, COMAL, LOTUS SCRIPT and PERL are among the largely extinct programming languages. In the programming world, a dead language is no longer used for active web development and is usually replaced by a more efficient modern language. 

How Does a Language Die?

• A programming language does not disappear in an instant. Instead it gradually fades away as a new language offers better performance and safety.
• For example, Apple’s former primary iOS and macOS language experienced a rapid decline when Swift was introduced. Downloads for CoffeeScript declined 95% when JavaScript was introduced.
• A language tied to a specific hardware usually dies with the defunct platform, like the dialects used for Commodore.
• If a language becomes too difficult compared to modern alternatives, developers shift away like PASCAL and COBOL.
• Lack of tools, testing hardware and IDE support slows development and eventually drives users away.

The Graveyard of Code: 10 Dead Programming Languages

Tech trends move fast. A dead programming language lacks broad usage or a supportive community but legacy code still exists and forms a vital part of the web. Whether you are a software historian or a curious computer science student, understanding the role dead languages played in modern web development helps bridge the gap and allows developers to appreciate how complex web stacks came into existence.

COBOL

Do you know that 90% of Fortune 500 companies still use COBOL for their core financial systems? Common Business Oriented Language is ot actually dead. More than 60 years old, this language still running is dying in terms of new adoption and lacks libraries and frameworks for modern tasks.

Why COBOL Died?

• Second and third generation languages were not built on COBOL
• JAVA and C# (.NET) are the primary replacements used for large-scale enterprise backend systems.
• Python and R replaced COBOL’s early dominance in data processing.
• Go is increasingly used for modernising high performance COBOL services.
• Modern systems increasingly use Java or Python to communicate with cloud based architectures where COBOL originally struggled.

ALGOL

Algorithmic Language is no longer used for commercial or practical software development because it has no standard input/output facilities. It was basically a research language designed by academics to describe algorithms in publications. ALGOL evolved into practical descendants that fixed its flaws.

Why ALGOL Died?

• Lack of standard input/output I/O facilities
• The successor ALGOL 68 was complex and difficult to implement.
• Pascal became the simpler alternative to ALCOL 68.
• C descendant of BCPL and B, was the stripped down version of ALGOL for system programming.
• Java, C++, Rust and Go are all created based on the fundamental concepts of ALGOL.

PL/I

Programming Language One is considered a legacy language and is relegated to specific environments. It was designed by IBM in 1960 by merging FORTRAN and COBOL. It failed to achieve its goals of becoming an ultimate, all in one language and its functions were split into several successors.

Why PL/I Died?

• Feature rich PL/I was too complex and difficult to master.
• PL/I was less efficient for scientific work than FORTRAN and harder to maintain for business than COBOL.
• Primarily tied to IBM’s mainframe, it was difficult to port to newer platforms.

APL

A Programming Language was known for its unique set of mathematical symbols and extreme brevity. Complex unreadable syntax and compactness caused its decline.

Why APL Died?

• Non standard characters required a specialised keyboard which became a barrier as standard keyboards took over.
• APL, back in the 1970s and 80s was popular for financial and actuarial modelling. VisiCalc and later Lotus 123 offered more intuitive ways to handle data without using complex code.

SIMULA 67

Although obsolete today, SIMULA 67 introduced the concept of Object Oriented Programming (OOP). It was designed originally for simulation modelling rather than general purpose software.

Why SIMULA 67 Died?

• Constrained by the mainframe computing limits, it was too slow for large scale production.
• It remained tied to academic and specific research domains instead of capturing the commercial market.
• SIMULA 67 was replaced by C++ and Smalltalk which inherited its object oriented DNA, yet performed better for broader commercial adoption. 

PASCAL

Pascal was built as an academic teaching tool rather than a production system and lacked features for large scale production. It evolved into Object Pascal, actively maintained in open source projects like Free Pascal Compiler and Lazarus IDE.

Why PASCAL Died?

• Its mainstream dominance faded because PASCOL lacked essential features for real world software.
• The UNIX operating system and its native language C, quickly dominated the scene of web development.
• C and C++ replaced Pascal for system level programming, heavy duty applications and operating systems.
• Java replaced Pascal as the primary language taught in university computer science programmes.

CLU

Created in 1974 at MIT, CLU was an experimental programming language for exploring program structuring. It was ahead of its time, never achieved widespread commercial adoption and faded away.

Why CLU Died?

• It was too resource intensive and impractical for the era’s hardware.
• Object Oriented Programming became the industry’s paradigm in the 1990s.
• CLU was object based but lacked inheritance, causing it to lose out to C++ and Java.

COMAL

It was designed as a bridge between BASIC and Pascal. It aimed at teaching structured programming without needing spaghetti code. 

Why COMAL Died?

• As it was tied to the niche 8 bit home computing era, COMAL was restricted to educational institutions in Europe.
• When 8 bit architecture became obsolete, it lacked the corporate and commercial backing and couldn’t be ported to the new IBM PC hardware.

LOTUS SCRIPT

It was the proprietary object oriented dialect of BASIC, bundled with Lotus Notes/ Domino Environment.

Why LOTUS SCRIPT Died?

• It only functioned properly within Lotus Notes/Domino. As the industry shifted toward open and cross platform standards, tying backend logic to a single backend program became a major disadvantage.
• LotusScript lacked the modern asynchronous frameworks necessary for web app development and mobile front ends.

PERL

PERL fell from dominance due to its complex, unreadable write only syntax. However it still powers legacy infrastructure and web hosting control panels like cPanel.

Why PERL Died?

• Python with its clean, highly readable syntax replaced Perl for automation and scripting.
• PHP replaced Perl for server side web scripting while modern web stacks are now predominantly built using JavaScript.

Conclusion

Programming languages fade rather than disappearing entirely. Many dead languages are at the backbone of the modern web. COBOL, once dominant, now operates on banking and insurance systems’ legacy mainframes. Algol, a pioneering language for algorithmic research, laid the foundation for C and Pascal. Efficient successors replace languages that can not meet the demands of modern web development.

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