Free
Openverse
Open SourceStock & Placeholders · Image & Media
Search engine for openly-licensed media across the web.
open-licenseimagesaudiosearch
Browse the complete directory — use filters to narrow down.
Stock & Placeholders · Image & Media
Search engine for openly-licensed media across the web.
Relational · Database
Enterprise-grade commercial relational database platform.
Cheatsheets · Documentation & Learning
Collection of developer cheatsheets for many languages and tools.
Documentation Generators · PDF & Documents
The collaborative online LaTeX editor used by academia.
Reference & Standards · Security
Open Worldwide Application Security Project: standards like the Top 10.
Payments · API Tools
Merchant-of-record payments for SaaS — global tax, invoicing and subscriptions handled for you.
Uptime & Alerting · Monitoring & Observability
Incident response and on-call management platform.
Load & Performance · Testing
Google's Core Web Vitals and page speed analysis service.
Color Tools
Advanced color scheme designer based on color theory.
PDF Tools · PDF & Documents
Large free PDF toolbox, no registration required.
Design Tools · Design & Prototyping
Open-source design and prototyping platform, SVG-native.
Visual Regression · Testing
Visual regression testing platform now part of BrowserStack.
Models & LLM APIs · AI for Developers
AI answer engine with live web citations — fast research with sources you can check.
Courses & Tutorials · Documentation & Learning
Blog tutorial open-source berbahasa Indonesia — Linux, Python, JavaScript dan dasar pemrograman, gratis selamanya.
Stock & Placeholders · Image & Media
Free stock photos and videos with an API.
GUI Clients · Database
The most popular open-source administration GUI for PostgreSQL.
Relational · Database
Open-source vector similarity search extension for PostgreSQL.
Design Tools · Design & Prototyping
Free browser-based Photoshop alternative that opens PSD files.
Stock & Placeholders · Image & Media
Easy-to-use placeholder images from Unsplash via URL parameters.
Vector Databases · AI for Developers
Managed vector database for AI similarity search at scale.
Stock & Placeholders · Image & Media
Massive library of free images, videos, vectors and audio under the Pixabay license — no attribution required.
Stock & Placeholders · Image & Media
Fast, flexible placeholder image service with a simple URL API.
Serverless & BaaS · Database
Managed MySQL-compatible platform built on Vitess with branching.
Web Analytics · Monitoring & Observability
Lightweight, privacy-friendly open-source web analytics.