Which sgcWebSockets edition do I need?

1. Do you need source code?

The Basic editions ship pre-compiled DCU files only. They are Delphi-only — no C++ Builder, no Lazarus / FPC and no Linux64 target. If you need any of those toolchains, or you want full source code visibility, skip Basic and go to question 2.

Pick Basic if: You only use Delphi on Windows, you don't need to read or modify component source, you want a lower-priced option and you're happy with 6 months of updates instead of 12.

2. Are you only writing clients, or do you also run a server?

If your application only consumes WebSocket / MQTT / AMQP / WAMP / STOMP / Kafka services, or only calls the crypto exchange, Telegram, AWS, Google Cloud and IoT APIs, the Standard edition is enough. It ships the WebSocket client, every messaging protocol client, the IoT clients, the OAuth2 and JWT client components, the UDP and STUN P2P clients, and the OpenSSL transport.

Some components people expect to find in Standard sit one or two tiers up. The WhatsApp Cloud API client and the native Windows SChannel transport start at Professional. HTTP/2, gRPC, the AI and LLM clients (OpenAI, Anthropic, Gemini, DeepSeek, Grok, Ollama, Mistral) and MCP are Enterprise, and so is the OpenAI Realtime client, which is Windows only.

If you also operate a server — you accept inbound WebSocket connections, host a WAMP router or run a DataSnap WebBrokerBridge — you need Professional or higher. The OAuth2, JWT and WebAuthn server components are the exception: they ship in Enterprise only. The OAuth2 and JWT client components are still in Standard.

3. How many concurrent connections does your server need to handle?

The Professional server is built on Indy and handles a few thousand concurrent connections comfortably. If you need to scale to tens of thousands of concurrent WebSocket connections, you need the Enterprise high-performance stack:

• IOCP Indy Server — Windows kernel-mode async I/O completion ports.
• EPOLL Indy Server — Linux64 epoll-based equivalent for high-throughput Linux deployments.
• HTTP.SYS Server — Windows kernel-mode HTTP listener (URL prefix registration).
• HTTP/2 + HTTP.SYS DataSnap bridges — for Embarcadero DataSnap REST projects that need HTTP/2.

The Firewall component, the LoadBalancer Server and the Proxy Server do not need Enterprise. They are already included in Professional.

4. Do you also need our other component libraries?

If you'll use two or more of our component libraries on the same project, the All-Access bundle is usually cheaper than buying them individually. It includes sgcWebSockets Enterprise for Delphi and .NET, sgcHTML, sgcQUIC, sgcWebRTC, sgcAI, sgcMQ, sgcSocial, sgcAuth, sgcHTTP, sgcREST, sgcCrypto, sgcOpenAPI, sgcSign, sgcSign .NET and sgcBiometrics, plus all future products released during the licence term. sgcIndy is included too, with the full source code that the free Community download does not carry.