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Developer Tools

1. Cobalt

Cobalt is an AI coding agent with its own persistent cloud computer. Connect your GitHub repository, describe a coding task in plain language, and Cobalt can edit the code, install dependencies, run tests, start services, and show you the application working through a live browser preview. Each task runs in an isolated development environment and continues working even after you close the tab. You can run features, bug fixes, prototypes, and technical experiments in parallel, then review the completed changes as commits and pull requests—without configuring local environments or juggling extra checkouts and worktrees.

Artificial Intelligence Developer Tools DevOps & Cloud

114

2. ShieldLabs

ShieldLabs identifies anonymous visitors and detects anonymity at any level with up to 99% accuracy, so you can assess traffic quality and prevent abuse and fraud: multi-accounting, bonus abuse and fake signups.It recognises visitors behind VPNs, proxies, Tor and anti-detect browsers, then returns a risk score from 0 to 100 with the named signals behind it. Your code decides what happens next.One JavaScript snippet, about five minutes to the first signal, then a API and webhooks. 5,000 free identifications, no credit card. Paid plans are published and flat, self-serve throughout.

Developer Tools SaaS Security

104

3. AppUFO

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.

Developer Tools

114

4. CodexSkin Store

CodexSkin is a free, no-code visual theme builder for Codex Desktop. It allows you to instantly turn any image into a custom, installable skin for macOS and Windows with full local privacy and a built-in one-click restore path.

Developer Tools

5. Lingue

Lingue is a design canvas for App Store and Google Play screenshots. Frame your app screens, localize into every store language, version your sets,...

Design Tools Developer Tools SaaS

6. Temp Mail

TempMail.is is a free disposable temporary email service that protects your real inbox from spam and phishing.Get an instant temp email with no signup. Unlike classic 10-minute mail, the inbox stays active until you delete it — so verification codes and OTPs can still arrive.Features:- Free core use, no account required- Persistent temporary inbox- Custom aliases and multi-inbox- Fast receive for verification emails- Clean web UI on desktop and mobileBuilt for privacy-conscious users, freelancers, and developers testing email flows.https://tempmail.is

APIs & Integrations Design Tools Developer Tools

114

10. ScreenSize.net

A fast, free online tool to instantly detect your screen resolution, viewport size, and device pixel ratio. Perfect for developers and designers optimizing responsive web layouts.

Design Tools Developer Tools Online Community

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Categories

Developer Tools

1. Cobalt

2. ShieldLabs

3. AppUFO

4. CodexSkin Store

5. Lingue

6. Temp Mail

7. Video2URL

8. Picmal

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Streak Challenge

Developer Tools

1. Cobalt

2. ShieldLabs

3. AppUFO

4. CodexSkin Store

5. Lingue

6. Temp Mail

7. Video2URL

8. Picmal

9. Focus Lens

10. ScreenSize.net