Free-tier developer utilities

AIDE Memory is a local-first memory layer for AI coding agents and teams. It installs via npm, creates a .aide/ directory, configures MCP tools and editor rules, and stores memories as JSON files in t...

CyberChef is a browser-based web application for analysing, decoding, and transforming data with a drag-and-drop recipe interface. It runs entirely in the browser with no server-side component, and su...

Format JSON Online

Format JSON Online is a browser-based toolkit for formatting, validating, minifying, comparing, and converting JSON. Core processing runs client-side in the browser, so pasted data stays on the user’s device rather than being uploaded to the service.

FreeTools.site

FreeTools.site is a collection of browser-based utilities for image editing, audio and video processing, document conversion, text manipulation, and related file tasks. Users select a tool, upload a file, process it in the browser workflow, and download the result without creating an account.

localhost.direct is a developer utility that provides a localhost domain with HTTPS support and wildcard subdomain handling. It lets local development work run natively on localhost.direct without extra configuration, with the exception of the reserved get.localhost.direct subdomain.

Metalama is an open-source patterns and architecture toolkit for C# built on Roslyn. It lets developers define aspects and project fabrics in C# so the compiler can generate repetitive code at build time and report architecture violations in the IDE as code is written.

Namae is a name availability checker for new app, library, and organization projects. It queries multiple registries at once so a developer can compare candidate names across domains, package registries, social platforms, app stores, and hosting services from a single search.

quicktype

quicktype is a code generation tool that converts JSON, JSON Schema, sample API responses, URLs, and GraphQL queries into strongly typed models and serializers for multiple programming languages.

Exercism

Exercism is an online programming practice platform that provides language tracks, coding exercises, automated feedback, and human mentoring across 83 programming languages. It supports both local CLI-based workflows and an in-browser editor for solving exercises.

Microsoft 365 Developer Program is a membership program that provides qualified developers with access to a free Microsoft 365 E5 developer subscription for building and testing Microsoft 365 solution...

JSON Swiss

JSON Swiss is a browser-based JSON toolkit that combines formatting, validation, repair, visual table editing, conversion, schema generation, comparison, and code generation in one workflow. The forma...

Wave Terminal

Wave Terminal is an open-source terminal application that combines command-line access with integrated workspace features. It includes file previews, remote file editing, SSH connection management, screen splitting, workspace layouts, and a built-in web browser.

DeepScan

DeepScan is a static analysis service for JavaScript and TypeScript code. It inspects code through semantic analysis and data-flow tracking to find runtime errors, code smells, and quality issues that...

TinyMCE

TinyMCE is a WYSIWYG HTML rich text editor that developers embed in web applications to provide in-browser content editing. It exposes a configurable editor surface with a large plugin set, a document...

WebComponents.dev is an online IDE for building Web Components in the browser. It provides starter templates for multiple component frameworks and languages, then lets developers push code to Git and publish packages to npm from the studio environment.

tickgit

tickgit is a code-based project management tool that scans repositories for TODO comments and surfaces them as trackable work items. It uses plain-text code comments and git rather than a separate project management system.

SemanticDiff

SemanticDiff is a GitHub pull request review tool that renders programming-language-aware diffs for code changes. It highlights moved code, refactorings, and style-only changes, and supports review comments, approve/request-changes actions, and synchronization with GitHub.

Hypertune

Hypertune is a feature flag and experimentation platform with type-safe SDKs, Git-based version control, analytics, and app configuration. It provides flag evaluation, targeting rules, experiments, ev...

Cacher

Cacher is a code snippet organizer with desktop apps, a web app, and editor integrations for creating, storing, syncing, and sharing code snippets. It supports public and private snippets, color-coded...

Raycast

Raycast is a macOS and Windows launcher that provides keyboard-driven access to built-in productivity tools, system actions, search, snippets, quicklinks, window management, notes, and an extension st...

Diawi is a web service for uploading iOS and Android development, ad-hoc, and in-house app builds and generating a private installation link. Developers upload an ipa, zipped .app, or apk, then share ...

Gleek

Gleek is a text-to-diagram tool for developers that generates diagrams from a keyboard-driven syntax, including flowcharts, UML class and sequence diagrams, state machine diagrams, object diagrams, Gantt charts, and ER diagrams.

Retool

Retool is a platform for building internal software, operational tools, and AI-enabled business applications. It helps teams create web apps, mobile apps, workflows, and custom logic on top of existing databases, APIs, and enterprise systems.

OMAR

OMAR is a terminal user interface for orchestrating hierarchies of AI agents from a single tmux session. It runs on macOS and Linux, supports multiple agent backends including Claude Code, Codex CLI, ...

SQLable

SQLable is a website that provides developer tools and posts related to SQL and databases. The site includes utilities for formatting SQL, validating queries, working with regular expressions, generating data, and comparing or transforming CSV files.

MySQL Visual Explain

MySQL Visual Explain is a web tool that converts MySQL EXPLAIN output into a visual query plan. It accepts a SQL query and shows the execution structure in a simpler format than the raw EXPLAIN text, with example plans for joins, subqueries, and complex queries.