lwip-tcpip/lwip

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

1733 stars · 616 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

lwIP is a lightweight, independent implementation of the TCP/IP protocol suite written in C, designed to minimize RAM and ROM usage. It provides full-scale TCP/IP networking (IPv4/IPv6, TCP, UDP, DHCP, DNS, TLS, MQTT, HTTP, and more) for embedded systems with only tens of kilobytes of free RAM.

Use cases

• add TCP/IP networking to a microcontroller with limited RAM
• implement an embedded HTTP or MQTT client with TLS support
• run IPv6 and 6LoWPAN on resource-constrained IoT devices
• build a PPP over serial or Ethernet connection in firmware
• embed a small SNMP agent or SNTP client in a device
• use a Berkeley-like socket API on an RTOS without a full OS network stack

When to choose

• you need a full TCP/IP stack on an embedded device with tens of KB of RAM
• you want IPv6, DHCP, DNS, and TLS support in a small footprint
• you are developing IoT firmware on platforms like ESP32 or STM32
• you need a mature, widely ported stack with an active developer community

When to avoid

• you are writing a desktop or server application where a full OS network stack is available
• you need a high-level networking framework rather than a low-level protocol stack
• your platform cannot provide the ~40 KB of code ROM and porting layer lwIP requires

Facets

library · maturity stable

networking embedded embedded-systems networking iot embedded iot c cross-platform tcp-ip-stack lightweight bsd-license ipv6 iot-networking

Member repositories

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markdown · JSON · MCP: product_card(name="lwip-tcpip/lwip")