Developer Tools

CapyToolkit

CapyToolkit is a free reference library that happens to contain 45+ working tools. The catalog spans eight categories: hardware and display diagnostics, developer parsers and encoders, security and privacy tools, audio and acoustic testing, math and engineering calculators, text analysis, web design utilities, and network references.Each tool page pairs the utility with example-driven reference content: the resistor calculator explains band tolerance, the subnet calculator breaks down CIDR notation, the MIME and HTTP status references are searchable, and the contrast checker quotes WCAG AA and AAA thresholds. Over a thousand pages of documentation support the catalog, and the blog adds buying guides and hands-on walkthroughs.Everything runs client-side in the browser. Files never upload, text never leaves the tab, and no account is required. The site installs as an app, works offline, and is also on the Microsoft Store for Windows. New tools and reference pages ship regularly.

89 upvotesNov 5, 2026

Normal Map Bench

Normal Map Bench creates tangent-space normal maps from images directly in your browser. Tune strength, smoothing and edge dilation with live controls, preview under a movable light, switch between OpenGL and DirectX Y conventions, and export PNG at the original resolution. Free, no upload, no account — processing stays local.

113 upvotesNov 2, 2026

MCPhq

MCPhq is a discovery and ranking directory for Model Context Protocol (MCP) servers. Browse maintained MCP servers ranked by real adoption signals such as monthly installs, GitHub stars, and commit activity. Find copy-paste installation configurations for popular AI clients, compare servers, filter by language and category, and track weekly updates.

196 upvotesOct 30, 2026

monolayer Autopilot

Start from a prompt, an AI-generated application, or an existing repo. monolayer reads the application's intent, determines the compute, data, storage, service, and event relationships it needs, validates the proposed state, provisions the infrastructure, deploys the application, and keeps reading runtime feedback after launch.This replaces work that is normally spread across cloud setup, CI/CD, environment configuration, database provisioning, secrets, monitoring, scaling, recovery, and operational handoffs. Developers describe relationships and desired behavior instead of designing infrastructure by hand.Everything runs inside your AWS account, including the control plane. Application workloads, databases, storage, logs, infrastructure resources, CloudFormation stacks, and AWS billing remain under your ownership and control. There is no shared hosting model, hidden infrastructure markup, or platform tax on AWS usage.Designed for developers whose code velocity > delivery.

94 upvotesOct 28, 2026

uChecker

uChecker verifies emails and exposes an MCP server so agents validate contacts inside their workflows. Docs at https://uchecker.net/en/mcp. Statuses Good / Bad / Unknown. Free SPF, DKIM, and DMARC checkers. Product is email verification and MCP for agents, not generative AI.

135 upvotesOct 27, 2026

UnificAlly

UnificAlly gives developers one API key for 100+ AI models. Instead of signing up for Google, xAI, ByteDance, Kling, Suno and ElevenLabs separately, each with its own account and minimum top-up, you call one endpoint and switch models by changing a string. Every model has an in-browser playground, there is an MCP server so agents like Claude or Cursor can generate media directly, and a CLI for batch runs from the terminal. Billing is pay per generation with no subscription. All prices are public, and you can try any model in the playground before writing code.

232 upvotesSep 9, 2026

Code race

Code Race is a fast-paced, interactive competitive coding and typing platform designed for developers and programmers to test and improve their coding speed, accuracy, and typing skills in real-time

122 upvotesOct 26, 2026

ToolVerified

Have you ever tried searching for a new software solution, only to be bombarded by lists where the "top" tools simply bought their ranking? The internet is overflowing with newly launched products, but figuring out which ones are actually worth your time has become incredibly difficult. ToolVerified was built to fix exactly that.ToolVerified is a dedicated discovery platform that cuts through the noise of modern marketing. It serves as a central hub where professionals, creators, and everyday internet users can find the latest digital tools, applications, and SaaS products. We cover all the essential categories, from artificial intelligence and marketing to productivity and design software, ensuring you always have access to the exact resources you need to improve your workflow.Our defining feature is a strict, unwavering commitment to authenticity. ToolVerified does not accept paid placements, sponsored boosting, or hidden advertising. Instead, every single tool submitted to the platform is meticulously reviewed by hand. This rigorous vetting process eliminates spam and ensures that only functional, high-quality projects make it onto the site.Once a tool is approved, its success is left entirely in the hands of the community. Users can explore the directory, discover hidden gems, and upvote their favorite applications. The tools that genuinely solve problems naturally climb our daily and weekly leaderboards. By combining human moderation with democratic community voting, ToolVerified provides a fair launchpad for independent makers and a completely trustworthy resource for users seeking the web's best new software.

94 upvotesSep 10, 2026

Appbanana Io

AppBanana is a service that helps Android developers pass Google Play's Closed Testing requirements by providing 12-25 real human testers who actively engage with your app on physical devices for 14 days. This generates the genuine activity signals Google expects, dramatically increasing approval chances."Get 12+ real testers. Get approved faster. Without rejections."The service includes guided Play Console questionnaire answers, free retesting if Google requests changes, and a 100% money-back guarantee if your app isn't approved. With over 10,000 apps approved and a 99.9% first-attempt success rate, AppBanana offers a risk-free solution to a common developer pain point.FeatureAppBananaDIY/FreeLaunch SpeedTesters in under 1 hour3-5 daysTester QualityReal Android testersFriends & botsRetentionActive for all 14 daysInstall & leaveApproval Rate99.9% first attemptOften 2-3 attempts

154 upvotesOct 24, 2026

CodexAccountBridge

CodexAccountBridge (cab) is an open-source Codex account manager for macOS and Linux. It provides a command-line tool and a native SwiftUI app for managing multiple official Codex or ChatGPT logins across local machines, SSH servers, remote projects, and supported proxy services.Each login is stored in its own CODEX_HOME, with authentication and model traffic delegated through the official Codex executable. CAB does not implement OAuth, proxy model requests, inspect token contents, or silently switch accounts after quota limits or errors.Conservative security model: each account logs in independently and never reads or copies auth.json.Key features include: account management, usage limit viewing, macOS notifications, SSH server management, session isolation, and service binding.

112 upvotesOct 23, 2026

SliceDraw

Draw, annotate and create on a free browser-based canvas. Sketch ideas, mark up screenshots, build diagrams, and crop or slice images — no sign-up, no upload, fully private.

61 upvotesOct 23, 2026

无损压缩图片无需上传 — 免费浏览器内图片优化工具

免费浏览器内图片压缩器，可批量压缩 PNG、JPG、WebP 与 AVIF，且无需上传。Rust + WebAssembly 100% 本地运行 —— 减小文件体积、保持画质，照片永不离开你的设备。

199 upvotesOct 22, 2026