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Category: Programming

17 Useful Free and Open Source CSS Parsers

June 26, 2026 Steve Emms Programming, Roundup

A CSS parser is a component of a web browser (or any CSS-processing tool) that reads CSS code and turns it into a structured format.

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ph-css – parse, modify and generate CSS stylesheets

June 25, 2026 Steve Emms Programming

ph-css parses and edits CSS documents, with structured at-rules, visitor APIs, URL rewriting and configurable CSS generation.

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scilintr – scientific code linter

June 25, 2026 Steve Emms Programming

scilintr checks scientific R analyses for silent error handling, label leakage, risky defaults and reporting drift, with documented waivers.

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Parse – lexers and parsers for web formats

June 25, 2026 Steve Emms Programming

Parse provides streaming CSS, HTML, JavaScript, JSON and XML parsers with reusable buffers and text processing utilities for Go tools.

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PHP CSS Parser – parse and modify CSS stylesheets

June 24, 2026 Steve Emms Programming

PHP CSS Parser converts stylesheets into mutable objects, enabling rule inspection, declaration editing and formatted CSS output.

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Software

14 Lightweight Markup Languages

June 24, 2026 Eilidih Parris Languages, Programming, Roundup

A lightweight markup language is a modern system for annotating a document in a way that is syntactically distinguishable from the text.

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Coding

11 Best Free and Open Source PHP Linter Tools

June 23, 2026 Eilidih Parris Programming, Roundup

This article picks some useful tools to help you fix PHP code.

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PHPCompatibility – PHP version compatibility checker

June 23, 2026 Steve Emms CLI, Programming

PHPCompatibility checks PHP source for compatibility with selected PHP versions, detecting removed, deprecated and newer features.

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PHPArkitect – architectural rule checker for PHP

June 22, 2026 Steve Emms CLI, Programming

PHPArkitect validates PHP architecture rules covering namespaces, dependencies and naming conventions, with baselines and CI reports.

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Deptrac – architectural dependency analysis for PHP

June 21, 2026 Steve Emms CLI, Programming

Deptrac enforces architectural boundaries in PHP applications through configurable layers, dependency rules and violation reports.

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Git Clients

Oyui – modern TUI merge tool and staging interface for Jujutsu and Git

June 21, 2026 Steve Emms Programming, TUI

Oyui is a terminal user interface for reviewing, editing, and staging diffs in Jujutsu and Git.

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Phan – static analysis tool for PHP

June 21, 2026 Steve Emms CLI, Programming

Phan checks PHP applications for type errors, undefined symbols, invalid calls and dead code, with plugins and editor integration.

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gistui – terminal UI for managing GitHub Gists

June 20, 2026 Steve Emms Programming, TUI

gistui is a terminal user interface for managing GitHub Gists.

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Brython – Python 3 designed for client-side web programming in the browser

June 20, 2026 Steve Emms Programming

Brython is an implementation of Python 3 designed for client-side web programming in the browser.

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Issue Tracking

Epiq – self-hosted issue tracker

June 20, 2026 Steve Emms Programming, TUI

Epiq is a self-hosted issue tracker that keeps project management close to a developer’s normal workflow.

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Herdr – terminal-based agent multiplexer

June 19, 2026 Steve Emms Programming, TUI

Herdr is a terminal-based agent multiplexer designed for managing coding agents and terminal processes in one persistent workspace.

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Natural Language Processing

21 Top Free and Open Source Python Natural Language Processing Tools

June 18, 2026 Eilidih Parris Programming, Roundup, Scientific

Natural language processing (NLP) is an exciting field of computer science, artificial intelligence, and computational linguistics.

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Maths

12 Essential Free and Open Source Python Maths Tools

June 17, 2026 Eilidih Parris Programming, Roundup, Scientific

Great libraries and tools that are ideal for mathematicians working with Python.

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Natural Language Processing

20 Useful R Natural Language Processing Tools

June 17, 2026 Steve Emms Programming, Roundup, Scientific

Natural language processing (NLP) is a set of techniques for using computers to detect in human language the kinds of things that humans detect automatically.

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Coding

22 Best Free and Open Source Python Microframeworks

June 17, 2026 Steve Emms Programming, Roundup

This article examines the best Python microframeworks. Micro means the framework is small, with little or no tools and libraries.

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