Rextester

Free plan Web

What Rextester is

Rextester is a free web service centered on online compilers and programming reference material. Its compiler page provides selectable languages and code editors, including Ada, C#, C++, Java, JavaScript, Python, Rust, Swift, SQL dialects, and others. Multiple compiler variants are listed for C++ and C, including gcc, clang, and vc options. Editors can use Vertical or Horizontal layouts, with controls to show compiler warnings and input. Code examples link to edit mode, history, and discussion, and the page includes an API link. Rextester also offers an online Fortran compiler with an example that stores values, iterates through them, calculates statistics, and displays a summary. Reference tables cover languages, data types, operators, SQL commands, and HTTP status codes. Listed language references include C++, C#, Java, JavaScript, Python, PHP, Ruby, and Go.

Who it suits

Rextester suits learners and developers who want browser-based code compilation and programming references. It also fits users sharing examples through links.

What it does well

Free web-based compiler
Many languages and compiler variants
Vertical or Horizontal editor layouts
Warnings and input controls
Programming reference tables

What to know first

No confirmed pricing details beyond free access
Sharing uses link access

Verdict

Rextester combines a broad online compiler list with reference tables and editable examples. It is useful for browser-based experiments and study, though the available maker and pricing information is limited.

Facts from Rextester's own pages

API link: The compiler page includes a link labeled API. · rextester.com, 12 Oct 2026
Code examples: The Fortran page includes an example program that stores values, iterates over them, calculates statistics, and displays a summary. · rextester.com, 12 Oct 2026
Community links: The compiler page links to Code Wall, Feedback, and Patreon. · rextester.com, 12 Oct 2026
Compiler options: The language list includes multiple compiler variants, including C++ (gcc), C++ (clang), C++ (vc++), C (gcc), C (clang), and C (vc). · rextester.com, 12 Oct 2026
Data types: The reference page includes examples of integer, float/double, Boolean, string, array, object, and null data types. · rextester.com, 12 Oct 2026
Editing tools: The compiler page links to edit mode, history, and discussion for a code example. · rextester.com, 12 Oct 2026
Editor layouts: The compiler page offers Vertical and Horizontal layouts. · rextester.com, 12 Oct 2026
Fortran language: The Fortran compiler page identifies its language as Fortran. · rextester.com, 12 Oct 2026
Free plan: Yes · rextester.com, 24 Sept 2026
Input and warnings: The compiler page has controls to show compiler warnings and show input. · rextester.com, 12 Oct 2026
Languages: The compiler page lists Ada, C#, C++, Java, JavaScript, Python, Rust, Swift, SQL dialects, and other languages. · rextester.com, 12 Oct 2026
Languages in reference: The reference page lists C++, C#, Java, JavaScript, Python, PHP, Ruby, and Go as popular programming languages. · rextester.com, 12 Oct 2026
Language uses: The reference page associates Python with automation, data science, web development, and scripting. · rextester.com, 12 Oct 2026
Maker details: The Rextester pages opened do not state the maker's name, headquarters, or founding year. · rextester.com, 12 Oct 2026
Online compiler: Rextester has an online compiler for Fortran. · rextester.com, 12 Oct 2026
Pricing: No pricing details could be confirmed from the Rextester pages opened. · rextester.com, 12 Oct 2026
Product: Rextester provides an online compiler page with selectable programming languages and code editors. · rextester.com, 12 Oct 2026
Reference material: Rextester's Programming Reference Tables page contains language, data type, operator, SQL command, and HTTP status code references. · rextester.com, 12 Oct 2026
Reference tables: Rextester publishes programming reference tables. · rextester.com, 12 Oct 2026
Sharing controls: link_access · rextester.com, 24 Sept 2026
SQL reference: The reference page lists SELECT, INSERT, UPDATE, DELETE, CREATE TABLE, JOIN, GROUP BY, and ORDER BY as common SQL commands. · rextester.com, 12 Oct 2026

Where Rextester stands on Freedom251

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