Best developer tools tools
A curated list of tools tagged developer tools — free to browse, no sign-up required.
CoordMap
Find GPS coordinates, elevation, weather
JSONViewerTool
Free JSON viewer, comparison, escape and unescape tools
Cloady
Deploy apps and databases with predictable cloud pricing
AgenticSaaS
The SaaS foundation for one founder and coding agents
Keyameleon
Per-keyboard input source switcher for Mac
RepoTunnel
Connect ChatGPT Web to your local development workspace
B2B-Saas-OS
A multi-tenant SaaS starter with adversarial tests
CPFHub.io
Brazilian CPF lookup API with an MCP server for AI agents
KitForma
Browser tools for PDFs, images, text and data
Agent Service Market
Bounded operation contracts and pilot documentation for AI agent developers
VerdictKit
Explore typed AI decisions with the Jev playground
Keptick
Know when an automation ran but produced too little.
Split Forms
Free contact form backend for any website
Code Mods Hub
Discover Claude Code mods, skills, plugins and MCP servers
LinoRoute
One gateway for multi-model AI API access
superagnt_
One MCP endpoint for any agent: data, scraping, Postgres, memory, queues, and inbox.
ExportDelta
Compare recurring CSV exports privately, by record key.
stack127
A toolbox and reference hub for indie hackers
PDF to MD
Convert PDF, Word, images, and HTML to clean Markdown with local privacy, OCR, batch downloads, API access, and MCP integration.
SpyTechAi
AI news and 1,000+ open-source projects in one place
All Free Online Tools
Free online tools for everyday tasks
Reqode
Define whole features. Give AI agents context. Verify the implementation.
Aident Loadout
Give your AI agents real capabilities: 1,000+ apps through one reusable setup.
Shipvela
Publish your website from GitHub or your terminal
ViewportReceipt Handoff
Annotate website screenshots and send a self-contained HTML feedback report.
CodexPluginStats
Find Codex plugins and see why they match
Plopino
Turn a finished HTML page into a link you can send.
TwitterXAPI
Public X data for apps, AI agents, and bulk exports
PercentURL URL Encoder & Decoder
Browser-based URL encoding and decoding for text and query parameters.
LiuNengAI
Chinese task tools and own-account subscription services
CodeGuard AI
Self-hosted AI code review for GitHub Pull Requests
热核算力
GPT API access with clear model groups and usage billing
Gateway Information Group — Agent Services
Website checks and digital products with wallet checkout and private delivery.
OnlineToolHubs
325 free browser tools, calculators, converters and developer utilities
uuidtools
UUID, GUID, Developer Tools, UUID Generator, UUID Validator
XGR MCP Gateway
AI-native MCP access to XGRChain and XDaLa workflows
MateMCP
Your agent hit a limit? Keep working.
ipynbtopdf
Convert Jupyter notebooks to PDF in your browser—no conversion server or LaTeX setup.
JSON Lab
JSON tools to compare data, export nested JSON to CSV, and format documents
TNAADO Tools
Free online tools for everyday work
GigaTools
Free web tools for SEO, website diagnostics, development, and everyday tasks.
TextBases
Free browser-based text and developer tools
APIClaw
Flat-rate OpenAI-compatible API gateway for multiple AI models
Linux Dork
Free Linux command builders, configuration generators and tutorials
gpu.fund
Cloud GPU rental price comparison for AI builders
Tessera
See your app on every screen, live.
EveryTool4U
Free online tools for file, productivity, and developer tasks.
Varion
Measured token optimization and AI developer tools
Cometflow Space
Free AI Tools, Developer Utilities & Web Resources — All in One Space.
helpmehack
Find open-source projects and plan your first contribution
Moltgate
Turn AI agent ideas into paid offers. Learn what sells, then automate what repeats.
CheatSheetHub
Fast developer cheat sheets. Look it up, copy it, go.
Imagekitypro
Free online image tools that run entirely in your browser
KaiGPT AI API中转站
面向中文开发者的 OpenAI 兼容与 Claude API 多模型网关
AICost Team
Independent LLM API price desk — compare model pricing across OpenAI, Anthropic, Google and more. Calculators, head-to-heads, no paid placements.
ToolsCrest – Free Online Tools
100+ Free Online Tools for PDF, Images, SEO, Developers, Calculations & More
ToolNova
Free online tools for everyday digital tasks.
doloc
Software localization automated in your existing workflow
CardScope
Preview link cards before you share
SchemaExtract
PDF/image to typed JSON against YOUR schema — free playground, no signup
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