Free
Memcached
Open SourceNoSQL · Database
The classic, simple distributed memory object cache.
cachein-memory
Browse the complete directory — use filters to narrow down.
NoSQL · Database
The classic, simple distributed memory object cache.
Dashboards & BI · Data & Analytics
Open-source BI tool for dashboards and self-serve queries.
Hyperscalers · Cloud Platforms
Microsoft's cloud platform with deep .NET and enterprise integration.
Relational · Database
Microsoft's enterprise relational database platform.
Payments · API Tools
Indonesia's leading payment gateway (GoTo): QRIS, VA, cards and more.
Vector Databases · AI for Developers
Highly scalable open-source vector database for billion-scale search.
Object Storage · Database
High-performance S3-compatible object storage, self-hostable.
Documentation Generators · PDF & Documents
Docs platform for API and product documentation — MDX-based, AI-assisted and hosted with analytics.
Models & LLM APIs · AI for Developers
European AI lab offering open and commercial models with an API.
NoSQL · Database
Popular document-oriented NoSQL database with a flexible schema.
Relational · Database
Widely-used open-source relational database owned by Oracle.
Agent & LLM Frameworks · AI for Developers
Fair-code workflow automation with native AI agent nodes.
Queues & Streaming · Database
Lightweight, high-performance messaging and microservices bus.
NoSQL · Database
The leading graph database with Cypher query language.
Serverless & BaaS · Database
Serverless Postgres with branching and scale-to-zero.
PaaS & Edge · Cloud Platforms
Web platform for frontend apps with functions and instant builds.
APM & Tracing · Monitoring & Observability
Full-stack observability platform with generous free tier.
Package Managers · Development Environment
Default Node.js package manager and the world's largest package registry.
Models & LLM APIs · AI for Developers
Self-hosted ChatGPT-style UI for Ollama and OpenAI-compatible APIs.
Models & LLM APIs · AI for Developers
API access to OpenAI models: GPT, embeddings, and tooling.
AI Coding Assistants · AI for Developers
Open-source AI software development agent platform.
Models & LLM APIs · AI for Developers
Single API that routes to hundreds of LLMs with unified billing.
Search Engines · Database
Community-driven, open-source fork of Elasticsearch and Kibana.
APM & Tracing · Monitoring & Observability
Vendor-neutral standard for traces, metrics and logs instrumentation.