Developer Tools & APIs

SqlInt

SQL practice

Browser-based SQL practice and interview questions.

StackBlitz

Browser IDE

Browser-based IDE and instant dev environments

StanzaAPI

Validation APIs

APIs for EDI, IBAN, VAT, GS1, and B2B validation

Star History

GitHub analytics

Track and compare GitHub star history

stateofpixel

Visual regression testing

Visual checks for pull requests

StatusPile

Status monitoring

Aggregates status pages in one view

StrangeBee

Security case management

Collaborative security case management with automation.

Stytch

Authentication APIs

APIs and SDKs for authentication and security.

SubdomainWatch

Attack surface monitoring

Continuous monitoring and takeover prevention.

SukuuData

Education data API

Education data API for Ghana.

Supercrontab

Cron job service

Cron jobs as a service, with logging and retries.

Superfeedr

Feed API

Real-time RSS and Atom feed API.

SuperHero API

Superhero data API

REST API for superhero and villain data.

Supermaven

AI code completion

AI code completion for software developers.

SuprSend

Notification infrastructure

Notification workflows for email, SMS, push, and inbox.

SVGicons.com

SVG icon library

Search and use open-source SVG icons for web and app design.

SwarmMemo

Agent messaging

Chat with agent swarms and keep task records.

SyAgent

Server monitoring

Monitor Linux servers and uptime with alerts.

Synadia

NATS messaging

Connectivity for agents, devices, and services across cloud and edge.

SyncEzy

App integrations

Two-way integrations for business apps and workflows.

Syncgrip

Data sync

Real-time two-way sync between Airtable and other tools.

Syncmate

Webflow sync

Sync API-enabled data sources with Webflow CMS.

Tabby

AI coding assistant

Self-hosted AI coding assistance for developers.

Telnyx

Cloud communications API

Build voice, messaging, and network workflows.

TestCollab

Test management

Test management for manual, automated, and AI testing.

Testspace

Test results

Test management with a live results dashboard.

Texterify

Localization tool

Translation and localization management for teams.

TheAudioDB

Music API

Music database and API with artwork and metadata.

The Blue Alliance API v3

Robotics data API

Data API for FIRST Robotics Competition results.

The Cat API

Cat content API

API for cat images, breeds, and facts.

TheCocktailDB

Cocktail API

Free cocktail database and API.

The Color API

Color conversion API

Color conversion and naming API for developers.

TheDogAPI

Pet data API

Pet data and breed intelligence API for businesses.

The Graph

Blockchain indexing

Indexing protocol for blockchain data and GraphQL access.

The IP API

IP geolocation API

IP geolocation API for developers.

TheMealDB

Recipe API

Recipe database and API for apps and developers.

The Noun Project

Icon library

Icons, photos, and plugins for creative workflows.

The Space Devs

Spaceflight APIs

Public APIs and tools for spaceflight data.

Thunder Client

API testing client

API testing in your IDE for developers.

Chainpoint

Blockchain timestamping

Blockchain proof for data and business processes.

Tiledesk

AI chatbots

No-code AI chatbots with live agent support.

Tinkercad

3D design app

Free app for 3D design, electronics, and coding.

TinyPNG

Image compression

Compress and convert images for websites and apps.

TomTom

Maps APIs and SDKs

Maps and location tools for businesses and developers.

ToolForte

Browser utility tools

Browser tools for PDF, images, text, code, and AI.

ToolJet

AI app builder

Low-code platform for internal tools and apps.

Toran Proxy

Composer proxy

Proxy for faster, more reliable Composer deployments.

Tradematic Cloud API

Trading automation

Automated trading platform for stocks and crypto