ProductCool - Discover the Best Innovative Tools & Daily Products

Stop guessing how your emails perform. MailTester.ai instantly analyzes newsletters, campaigns, or community emails, giving actionable insights to boost engagement, open rates, conversions and saving you hours of guesswork.

Reach more users worldwide without spending days or hundreds on app localisation. Localise your Xcode projects in minutes, reduce translation costs, and spend less time managing strings so you can focus on building great apps.

Introducing BuildKit 2.0 – Build fully customizable in-code AI tools & MCPs for integrations with a single prompt. Works with every development environment and AI framework.

Batterygo is a minimal macOS menu bar app that shows your battery percentage and charging status with a clean, space-saving design. You can hide the percent symbol, track power source changes, and enjoy a distraction-free UI.

Introducing Rocket Journal: An AI-powered voice journal to decode your thoughts, uncover patterns, and unlock clarity — all in just minutes a day. Speak your mind in a safe rant space or reflect deeply with guided prompts. On iOS only. Coming soon to Android.

Professional storage management for Mac developers. Clean safely without breaking your workflow. Developer-focused cleanup for Xcode, npm, Docker, and more.

翻墙-科学上网

This is a comprehensive guide designed to help candidates prepare for DevOps engineering interviews. It provides a curated collection of common interview questions, detailed explanations, and best practices across key DevOps domains like CI/CD, Infrastructure as Code, and Cloud platforms. It's an essential resource for aspiring DevOps engineers, SREs, and platform engineers looking to land their next role.

Ladybird is a new, independent web browser engine built from scratch, not forked from existing projects. It aims to solve the problem of browser engine consolidation by providing a standards-driven alternative free from corporate agendas and user monetization. It is for users, developers, and advocates who want a truly independent and focused future for the web platform.

TradingAgents: Multi-Agents LLM Financial Trading Framework

A free, open source, local MCP gateway. Set up each server once and every AI agent shares it (Claude, Cursor, VS Code, Codex, and 29 more). Instead of dumping every tool definition into context, it exposes a few meta-tools your agent searches on demand. Benchmarked and graded for correct answers, that's up to 91% fewer tokens at the same task success. Secrets live in your OS keychain, not client configs. Rug-pulls and tool poisoning get flagged, and destructive calls can wait for your approval.

One place where your company's AI skills, tools and knowledge live - centrally managed, reviewed and access-controlled, and usable from any AI agent. Hexis is a layer on top of Git: same core (versioning, PRs), plus a clean UX so anyone can use skills, suggest changes, and submit new ones and admins can govern which context, tools, and skills each person, team, or agent can access. Consumed via MCP, works in any agent in the company.

Subscribe to any Basedash dashboard or chart and get a fresh snapshot delivered on a schedule—straight to your inbox or a Slack channel. Pick the cadence (every Monday at 9am, daily, monthly on the 1st), choose who receives it, and each delivery arrives with up-to-date charts and a link back to the live dashboard. No exporting, no screenshotting, no remembering to share. The Monday metrics email your team wants, without anyone building it. Your dashboards, delivered on schedule.

An animated pixel-art map of the solar system with every body at its real current position, computed from published orbital elements rather than copied from a list. Zoom from the Sun to the Kuiper belt, browse 171 catalogued objects with sourced facts, and see what the sky is doing for the next six months. Every rock is also for sale: claim an asteroid for $5, keep it forever, name it whatever you like. A name here is shown on AstraPixels only, and is not an IAU designation.

Most AI hands dev-tool founders the same generic sales and marketing advice. The GTM Co-Founder doesn't. It's a set of open-source skills that interview you once, learn your real product and market, then walk you move by move through a prioritised GTM roadmap: who it's for, positioning, your first 50 users, launch, pricing, etc. Grounded in the playbooks of Adam Frankl and Jakub Czakon, plus my own time as a Founding AE and GTM advisor. Free and open source.

witr is a CLI and TUI tool that lets you trace any process, port, container, or file back to what started it. It solves the problem of debugging mysterious system activity by visualizing the chain of events in a simulated or live environment. It's for developers and system administrators who need to understand complex system dependencies and troubleshoot issues like stuck processes or unknown listeners.

Legendary_OSINT is a curated collection of open-source intelligence tools and resources. It solves the problem of scattered information by providing a centralized, categorized repository for investigations. This collection is designed for fraud investigators, CTI analysts, and professionals in KYC, AML, and security roles.

celld is a self-hosted, distributed runtime for Cloudflare's Durable Objects. It lets you run your existing Workers and Durable Objects code unchanged, but store the data in your own cloud bucket, giving you full control and ownership. It solves the problem of Durable Objects becoming prohibitively expensive at scale, offering orders of magnitude lower cost for applications with many active objects. It's for developers who need the Durable Objects programming model but require cost-efficiency, data ownership, and the ability to run on their own infrastructure.

Swarm-Forge is a coordination tool designed to manage and direct multiple specialized AI agents simultaneously. It solves the problem of fragmented AI workflows by enabling agents to collaborate, share context, and tackle multi-step projects cohesively. This tool is for developers and teams looking to scale AI-assisted development beyond single-agent interactions, turning a group of AI specialists into a unified, productive swarm.

mise is a polyglot CLI tool that manages your project's development tools, environment variables, and tasks from a single configuration file. It solves the problem of inconsistent setups across machines by ensuring every developer gets the same environment, tools, and commands. It's for developers and teams working on projects that require specific tool versions, environment configurations, and repeatable build/test processes.

Grok2API is a multi-account API gateway that consolidates access to Grok Build, Grok Web, and Grok Console services. It solves the problem of fragmented authentication and complex management when using multiple Grok AI accounts or services simultaneously. This tool is designed for developers, teams, and organizations who need to programmatically interact with various Grok AI platforms through a single, streamlined interface.

MiroFish is a simple yet powerful swarm intelligence engine designed to model complex systems and predict outcomes. It solves the problem of making accurate predictions in dynamic, multi-agent environments by simulating collective behaviors. This tool is ideal for researchers, data scientists, and developers working on optimization, forecasting, and simulation projects where traditional models fall short.

Semantica is an open-source, graph-native infrastructure that provides AI systems with structured context, causal reasoning, and full decision provenance. It solves critical production AI failures like data silos and black-box decisions by making AI explainable, traceable, and accountable by design. It's built for developers and enterprises using AI agents, LangGraph, CrewAI, LlamaIndex, and other frameworks who need trust and auditability in production.

A self-improving RLM agent for coding workflows and long-running autonomous tasks.

All-in-one AI image and video generator: text to video, image to video and text to image in one workspace, with 14 model families and one credit balance.

The best event photo & video sharing app via QR Code. Perfect for weddings, birthdays, and special celebrations.

Your team edits rows in a familiar spreadsheet. Dashboards and rollups read live off those rows, so your status page stays current instead of one you rebuild every week. One plan, $19 per editor per month, free view-only collaborators.