Freemium
PaaS & Edge · Cloud Platforms
Global CDN, DNS, security and edge compute platform.
cdndnsedgesecurity
Browse the complete directory — use filters to narrow down.
PaaS & Edge · Cloud Platforms
Global CDN, DNS, security and edge compute platform.
Color Tools
Fast palette generator with explore, contrast and export tools.
Encoding & Decoding
The Cyber Swiss Army Knife: encode, decode, hash and transform data in the browser.
Design Tools · Design & Prototyping
Collaborative interface design tool used across the industry.
Hosting & Collaboration · Git & Version Control
The largest platform for Git hosting, collaboration and CI/CD.
Logs & Metrics · Monitoring & Observability
Open-source visualization and analytics for metrics, logs and traces.
Orchestration · DevOps
The open-source system for automating container orchestration.
Relational · Database
The world's most advanced open-source relational database.
API Clients · API Tools
API platform for building, testing, documenting and sharing APIs.
NoSQL · Database
In-memory data store used for caching, queues and realtime.
Regex
The most popular regex tester and debugger with live explanation.
Error Tracking · Monitoring & Observability
Error monitoring and tracing for every stack, with clear stack traces.
Serverless & BaaS · Database
Open-source Firebase alternative: Postgres, auth, storage, realtime and functions.
Passwords & IDs · Security
Generate strong, random passwords free from 1Password.
Color Tools
Adobe's color wheel, palette extraction and accessibility tools.
Practice & Challenges · Documentation & Learning
Annual series of fun programming puzzles every December.
Pipelines & ETL · Data & Analytics
Open-source data integration with 550+ prebuilt connectors.
Wallets & Infrastructure · Web3 & Blockchain
Web3 developer platform — node APIs, enhanced APIs (NFT, tokens), webhooks and monitoring across chains.
NoSQL · Database
AWS fully managed serverless key-value and document database.
Generators · CSS Tools
Play with ready-made CSS animations and export the code.
Models & LLM APIs · AI for Developers
API access to Claude models with strong coding and reasoning.
Agent & LLM Frameworks · AI for Developers
All-in-one desktop + docker app for chatting with your documents.
Pipelines & ETL · Data & Analytics
The standard open-source orchestrator for data pipelines.
Other Formats · Data Formats
Data serialization system commonly used with Kafka.