Freemium
InfluxDB
Open SourceNoSQL · Database
Purpose-built time-series database for metrics and events.
time-seriesmetricsiot
Browse the complete directory — use filters to narrow down.
NoSQL · Database
Purpose-built time-series database for metrics and events.
Wallets & Infrastructure · Web3 & Blockchain
Consensys's hosted Ethereum and IPFS node service — scalable RPC access without running your own nodes.
JSON · Data Formats
Open-source JSON visualizer that turns data into interactive graphs.
Notebooks & Data Science · Data & Analytics
Data science community with datasets, notebooks and competitions.
Generators · CSS Tools
Visual keyframe animation editor plus CSS utilities.
Models & LLM APIs · AI for Developers
Moonshot AI's assistant with long-context understanding.
Web Servers & Proxies · DevOps
Popular open-source API gateway and microservices management.
Inspiration & Galleries · Design & Prototyping
A curated gallery of landing page design with tag filters by industry, style and elements.
Agent & LLM Frameworks · AI for Developers
Open-source LLM observability: traces, evals and prompt management.
Feature Flags · DevOps
The commercial standard for feature flags — targeting, rollouts, experimentation and SDKs for every stack.
Practice & Challenges · Documentation & Learning
The most popular platform for coding interview preparation.
Payments · API Tools
Merchant-of-record payments and licensing for digital products.
Models & LLM APIs · AI for Developers
Open-source, multi-provider chat UI with agents and artifacts.
VPS & Bare Metal · Cloud Platforms
Akamai's cloud computing service with simple Linux VMs.
Models & LLM APIs · AI for Developers
Open-source AI chat framework with plugins and agent marketplace.
Error Tracking · Monitoring & Observability
Session replay and frontend monitoring with error tracking.
Authentication · API Tools
Open-source auth infrastructure with a beautiful admin console — OIDC/OAuth, SSO and user management, self-hostable.
Logs & Metrics · Monitoring & Observability
Horizontally-scalable log aggregation designed like Prometheus.
Animation · Frontend
Platform for Lottie animations: preview, edit, host and embed.
AI Coding Assistants · AI for Developers
AI full-stack app builder with GitHub sync and Supabase integration.
Email · API Tools
Long-standing transactional email API for developers.
Email · API Tools
Email sandbox that safely captures mail from dev and staging.
Search Engines · Database
Fast, typo-tolerant search engine with great defaults (trending).
Dashboards & BI · Data & Analytics
Open-source BI tool for dashboards and self-serve queries.