The Daily Index — Wednesday, April 22, 2026 · TLDR Index

Repositories, courses and useful tools

Resources & Tools

TLDR Dev · Tool

ZINDEX

Zindex provides infrastructure for agents to create and render diagrams as durable, versioned state via the Diagram Scene Protocol. The system acts as a production-grade middle layer that ensures consistent, multi-format output through automated layout and validation.

zindex.ai

TLDR Dev · GitHub repository

GOMODEL

GoModel is a high-performance, Go-based AI gateway that provides a unified, OpenAI-compatible API for major providers like Gemini and Anthropic. It has advanced two-layer caching to reduce costs and latency, along with tools for token tracking and usage analytics.

github.com

TLDR Dev · Tool

LAWS OF SOFTWARE ENGINEERING

The "Laws of Software Engineering" is a collection of 56 principles and patterns that shape software systems, teams, and decisions.

lawsofsoftwareengineering.com

TLDR Design · Tool

AI YOUTUBE THUMBNAIL GENERATOR

Create scroll-stopping AI YouTube thumbnails in 30 seconds.

thumbnailcreator.com

TLDR Design · Tool

BUILD STUNNING VUE AND NUXT INTERFACES

Production-ready UI components built for Vue and Nuxt that help developers ship faster while maintaining clean design and great user experience.

inspira-ui.com

TLDR Design · Tool

FROM PDF DESIGNS TO HIGH-QUALITY 3D

Dreamcomposer is a web-based application that transforms PDF designs into high-quality 3D packaging mockups with over 100 unique finishing effects like metallic sheens and glitter.

dreamcomposer.de

TLDR Founders · Tool

KNOWZILLA

Provide real-time answers and guidance to sales teams during live calls.

knowzilla.eu

TLDR Founders · Tool

CLAYHOG

Track and analyze how AI models represent and rank brands and competitors in their responses.

clayhog.com

TLDR Founders · Tool

FOYER

Add a voice-based AI agent to a website to interact with visitors and guide them through the sales process.

foyer.ink

TLDR Marketing · Tool

EXTRA BY BUILDFOREVER

Extra is a new email app, created by former Pinterest designers and engineers. It reimagines the inbox around your daily life instead of traditional folders and subject lines. It uses AI behind the scenes to organize emails into a dynamic “Today” view that highlights what needs action, what's happening, and what's worth knowing, while sorting the rest into personalized tabs like events, shopping, and news. It turns email into a more visual and manageable experience.

extra.email