
ToolZip.xyz
SmallSEOTools
calculator.net
DevToys
browserling
Speedtest.net
IT Tools
Omni Calculator
Markdrop
BugHerd
Pastel
Webvizio
Free online developer tools that run 100% in your browser. JSON formatter & validator, regex tester with plain-English explanations, Base64 encoder/decoder, color converter with WCAG contrast checker, UUID/ULID generator, cron expression builder, hash generator (MD5/SHA-256/SHA-512), password generator, QR code maker, image format converter, and 25+ more. All tools are client-side, your data never leaves your machine. No account required, no ads, no tracking.
ToolZip.xyz
MarkdropMarkdrop's answer:
Markdrop combines powerful visual feedback, screen recording, and developer-ready bug reporting into a single, lightweight tool that feels invisible until you need it. Unlike bloated alternatives, Markdrop is fast, easy to integrate, and built for modern teams who care about speed and clarity with no Chrome extension or signup friction required.
Markdrop's answer:
Affordable, transparent pricing: Markdrop offers all the core features at a fraction of the cost of tools like Markup.io or Pastel.
Designed for devs and designers: Every comment can include logs, screen recordings, and environment data ready for developers to act on.
No friction for users: Share a link and anyone can leave feedback. No browser extensions, no accounts, no hassle.
Fast and privacy-respecting: Lightweight script, GDPR-compliant, and zero tracking bloat.
All-in-one: Combines comments, annotations, bug reporting, and async video so teams donโt need 3 different tools.
Markdrop's answer:
Markdrop is built for:
Founders and indie builders who want fast feedback without complex tools
Designers and PMs collecting client or stakeholder feedback
Developers who want bug reports with context, not vague screenshots
Agencies delivering websites and apps that need client review In short, itโs for lean product teams who value clarity and speed.
Markdrop's answer:
Markdrop was born out of frustration. As a solo founder building multiple products, I (Manuel) kept running into the same feedback pain, long email chains, vague bug reports, and overpriced tools that did too much or too little. So I built what I needed: a clean, no-fuss tool to drop comments directly on a site, see what users saw, and get back to shipping.
Markdrop's answer:
Which are the primary technologies used for building your product?
Frontend: Svelte 5 Backend: Cloudflare Workers, D1, and Durable Objects Database: Wrangler DB (D1) DevOps/Infra: Cloudflare Pages + R2 for static assets and file storage
Markdrop's answer:
Indie founders using Markdrop to launch and iterate faster
Agencies working with clients.
YC applicants using it to get fast design review
No-code builders collecting client feedback inside Webflow
Internal product teams replacing Slack screenshots with structured feedback
SmallSEOTools - Do you need effective SEO tools which are 100% free? Check out our SmallSEOtools.com for checking and removing plagiarism, backlinks, tracking keyword positions, and more.
BugHerd - BugHerd: The Website Feedback Tool for Agencies
calculator.net - Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
Pastel - Sticky note-based feedback collection tool for live websites
DevToys - A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.
Webvizio - This free website feedback tool & website review software allows managers and teams to collaborate on website revisions in real time. Join for free now!